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CVE-2013-2548 | False | False | False | False | AV:L/AC:L/Au:N/C:P/I:N/A:N | LOCAL | LOW | NONE | PARTIAL | NONE | NONE | 2.1 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'https://github.com/torvalds/linux/commit/9a5467bf7b6e9e02ec9c3da4e23747c05faeaac6', 'name': 'https://github.com/torvalds/linux/commit/9a5467bf7b6e9e02ec9c3da4e23747c05faeaac6', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=9a5467bf7b6e9e02ec9c3da4e23747c05faeaac6', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=9a5467bf7b6e9e02ec9c3da4e23747c05faeaac6', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.openwall.com/lists/oss-security/2013/03/05/13', 'name': '[oss-security] 20130305 CVE Requests (maybe): Linux kernel: various info leaks, some NULL ptr derefs', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1795-1', 'name': 'USN-1795-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1796-1', 'name': 'USN-1796-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1793-1', 'name': 'USN-1793-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1794-1', 'name': 'USN-1794-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1797-1', 'name': 'USN-1797-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2013:176', 'name': 'MDVSA-2013:176', 'refsource': 'MANDRIVA', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-updates/2013-12/msg00129.html', 'name': 'openSUSE-SU-2013:1971', 'refsource': 'SUSE', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-310'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.21:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 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{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.17:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.22:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.3:rc1:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.3.5:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2:rc7:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2:rc6:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.17:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.45:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.24:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.14:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.15:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.7:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.30:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.67:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_mrg:2.0:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The crypto_report_one function in crypto/crypto_user.c in the report API in the crypto user configuration API in the Linux kernel through 3.8.2 uses an incorrect length value during a copy operation, which allows local users to obtain sensitive information from kernel memory by leveraging the CAP_NET_ADMIN capability.'}] | 2021-07-15T19:16Z | 2013-03-15T20:55Z | Cryptographic Issues | Weaknesses in this category are related to the design and implementation of data confidentiality and integrity. Frequently these deal with the use of encoding techniques, encryption libraries, and hashing algorithms. The weaknesses in this category could lead to a degradation of the quality data if they are not addressed. | https://cwe.mitre.org/data/definitions/310.html | 1 | Mathias Krause | 2013-02-05 18:19:13+01:00 | crypto: user - fix info leaks in report API
Three errors resulting in kernel memory disclosure:
1/ The structures used for the netlink based crypto algorithm report API
are located on the stack. As snprintf() does not fill the remainder of
the buffer with null bytes, those stack bytes will be disclosed to users
of the API. Switch to strncpy() to fix this.
2/ crypto_report_one() does not initialize all field of struct
crypto_user_alg. Fix this to fix the heap info leak.
3/ For the module name we should copy only as many bytes as
module_name() returns -- not as much as the destination buffer could
hold. But the current code does not and therefore copies random data
from behind the end of the module name, as the module name is always
shorter than CRYPTO_MAX_ALG_NAME.
Also switch to use strncpy() to copy the algorithm's name and
driver_name. They are strings, after all.
Signed-off-by: Mathias Krause <[email protected]>
Cc: Steffen Klassert <[email protected]>
Signed-off-by: Herbert Xu <[email protected]> | 9a5467bf7b6e9e02ec9c3da4e23747c05faeaac6 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | crypto_rng_report | crypto_rng_report( struct sk_buff * skb , struct crypto_alg * alg) | ['skb', 'alg'] | static int crypto_rng_report(struct sk_buff *skb, struct crypto_alg *alg)
{
struct crypto_report_rng rrng;
snprintf(rrng.type, CRYPTO_MAX_ALG_NAME, "%s", "rng");
rrng.seedsize = alg->cra_rng.seedsize;
if (nla_put(skb, CRYPTOCFGA_REPORT_RNG,
sizeof(struct crypto_report_rng), &rrng))
goto nla_put_failure;
return 0;
nla_put_failure:
return -EMSGSIZE;
} | 71 | True | 1 |
||
CVE-2013-2546 | False | False | False | False | AV:L/AC:L/Au:N/C:P/I:N/A:N | LOCAL | LOW | NONE | PARTIAL | NONE | NONE | 2.1 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://www.openwall.com/lists/oss-security/2013/03/05/13', 'name': '[oss-security] 20130305 CVE Requests (maybe): Linux kernel: various info leaks, some NULL ptr derefs', 'refsource': 'MLIST', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/9a5467bf7b6e9e02ec9c3da4e23747c05faeaac6', 'name': 'https://github.com/torvalds/linux/commit/9a5467bf7b6e9e02ec9c3da4e23747c05faeaac6', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=9a5467bf7b6e9e02ec9c3da4e23747c05faeaac6', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=9a5467bf7b6e9e02ec9c3da4e23747c05faeaac6', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1795-1', 'name': 'USN-1795-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1796-1', 'name': 'USN-1796-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1793-1', 'name': 'USN-1793-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1794-1', 'name': 'USN-1794-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1797-1', 'name': 'USN-1797-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2013:176', 'name': 'MDVSA-2013:176', 'refsource': 'MANDRIVA', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-updates/2013-12/msg00129.html', 'name': 'openSUSE-SU-2013:1971', 'refsource': 'SUSE', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-310'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.21:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 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{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.61:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.65:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.53:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.39:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.9:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_mrg:2.0:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The report API in the crypto user configuration API in the Linux kernel through 3.8.2 uses an incorrect C library function for copying strings, which allows local users to obtain sensitive information from kernel stack memory by leveraging the CAP_NET_ADMIN capability.'}] | 2021-07-15T19:16Z | 2013-03-15T20:55Z | Cryptographic Issues | Weaknesses in this category are related to the design and implementation of data confidentiality and integrity. Frequently these deal with the use of encoding techniques, encryption libraries, and hashing algorithms. The weaknesses in this category could lead to a degradation of the quality data if they are not addressed. | https://cwe.mitre.org/data/definitions/310.html | 1 | Mathias Krause | 2013-02-05 18:19:13+01:00 | crypto: user - fix info leaks in report API
Three errors resulting in kernel memory disclosure:
1/ The structures used for the netlink based crypto algorithm report API
are located on the stack. As snprintf() does not fill the remainder of
the buffer with null bytes, those stack bytes will be disclosed to users
of the API. Switch to strncpy() to fix this.
2/ crypto_report_one() does not initialize all field of struct
crypto_user_alg. Fix this to fix the heap info leak.
3/ For the module name we should copy only as many bytes as
module_name() returns -- not as much as the destination buffer could
hold. But the current code does not and therefore copies random data
from behind the end of the module name, as the module name is always
shorter than CRYPTO_MAX_ALG_NAME.
Also switch to use strncpy() to copy the algorithm's name and
driver_name. They are strings, after all.
Signed-off-by: Mathias Krause <[email protected]>
Cc: Steffen Klassert <[email protected]>
Signed-off-by: Herbert Xu <[email protected]> | 9a5467bf7b6e9e02ec9c3da4e23747c05faeaac6 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | crypto_shash_report | crypto_shash_report( struct sk_buff * skb , struct crypto_alg * alg) | ['skb', 'alg'] | static int crypto_shash_report(struct sk_buff *skb, struct crypto_alg *alg)
{
struct crypto_report_hash rhash;
struct shash_alg *salg = __crypto_shash_alg(alg);
snprintf(rhash.type, CRYPTO_MAX_ALG_NAME, "%s", "shash");
rhash.blocksize = alg->cra_blocksize;
rhash.digestsize = salg->digestsize;
if (nla_put(skb, CRYPTOCFGA_REPORT_HASH,
sizeof(struct crypto_report_hash), &rhash))
goto nla_put_failure;
return 0;
nla_put_failure:
return -EMSGSIZE;
} | 87 | True | 1 |
||
CVE-2013-2547 | False | False | False | False | AV:L/AC:L/Au:N/C:P/I:N/A:N | LOCAL | LOW | NONE | PARTIAL | NONE | NONE | 2.1 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'https://github.com/torvalds/linux/commit/9a5467bf7b6e9e02ec9c3da4e23747c05faeaac6', 'name': 'https://github.com/torvalds/linux/commit/9a5467bf7b6e9e02ec9c3da4e23747c05faeaac6', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.openwall.com/lists/oss-security/2013/03/05/13', 'name': '[oss-security] 20130305 CVE Requests (maybe): Linux kernel: various info leaks, some NULL ptr derefs', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=9a5467bf7b6e9e02ec9c3da4e23747c05faeaac6', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=9a5467bf7b6e9e02ec9c3da4e23747c05faeaac6', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1795-1', 'name': 'USN-1795-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1796-1', 'name': 'USN-1796-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1793-1', 'name': 'USN-1793-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1794-1', 'name': 'USN-1794-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1797-1', 'name': 'USN-1797-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2013:176', 'name': 'MDVSA-2013:176', 'refsource': 'MANDRIVA', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-updates/2013-12/msg00129.html', 'name': 'openSUSE-SU-2013:1971', 'refsource': 'SUSE', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-310'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.21:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 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{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.39:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.9:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.7.5:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.6.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.5.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4:rc6:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4:rc5:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.16:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.3:rc1:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.3.7:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2:rc7:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.7:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.8:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.1:rc3:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.1.5:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.1.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.61:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.50:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.56:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.24:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.26:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.29:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_mrg:2.0:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The crypto_report_one function in crypto/crypto_user.c in the report API in the crypto user configuration API in the Linux kernel through 3.8.2 does not initialize certain structure members, which allows local users to obtain sensitive information from kernel heap memory by leveraging the CAP_NET_ADMIN capability.'}] | 2021-07-15T19:16Z | 2013-03-15T20:55Z | Cryptographic Issues | Weaknesses in this category are related to the design and implementation of data confidentiality and integrity. Frequently these deal with the use of encoding techniques, encryption libraries, and hashing algorithms. The weaknesses in this category could lead to a degradation of the quality data if they are not addressed. | https://cwe.mitre.org/data/definitions/310.html | 1 | Mathias Krause | 2013-02-05 18:19:13+01:00 | crypto: user - fix info leaks in report API
Three errors resulting in kernel memory disclosure:
1/ The structures used for the netlink based crypto algorithm report API
are located on the stack. As snprintf() does not fill the remainder of
the buffer with null bytes, those stack bytes will be disclosed to users
of the API. Switch to strncpy() to fix this.
2/ crypto_report_one() does not initialize all field of struct
crypto_user_alg. Fix this to fix the heap info leak.
3/ For the module name we should copy only as many bytes as
module_name() returns -- not as much as the destination buffer could
hold. But the current code does not and therefore copies random data
from behind the end of the module name, as the module name is always
shorter than CRYPTO_MAX_ALG_NAME.
Also switch to use strncpy() to copy the algorithm's name and
driver_name. They are strings, after all.
Signed-off-by: Mathias Krause <[email protected]>
Cc: Steffen Klassert <[email protected]>
Signed-off-by: Herbert Xu <[email protected]> | 9a5467bf7b6e9e02ec9c3da4e23747c05faeaac6 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | crypto_shash_report | crypto_shash_report( struct sk_buff * skb , struct crypto_alg * alg) | ['skb', 'alg'] | static int crypto_shash_report(struct sk_buff *skb, struct crypto_alg *alg)
{
struct crypto_report_hash rhash;
struct shash_alg *salg = __crypto_shash_alg(alg);
snprintf(rhash.type, CRYPTO_MAX_ALG_NAME, "%s", "shash");
rhash.blocksize = alg->cra_blocksize;
rhash.digestsize = salg->digestsize;
if (nla_put(skb, CRYPTOCFGA_REPORT_HASH,
sizeof(struct crypto_report_hash), &rhash))
goto nla_put_failure;
return 0;
nla_put_failure:
return -EMSGSIZE;
} | 87 | True | 1 |
||
CVE-2013-2548 | False | False | False | False | AV:L/AC:L/Au:N/C:P/I:N/A:N | LOCAL | LOW | NONE | PARTIAL | NONE | NONE | 2.1 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'https://github.com/torvalds/linux/commit/9a5467bf7b6e9e02ec9c3da4e23747c05faeaac6', 'name': 'https://github.com/torvalds/linux/commit/9a5467bf7b6e9e02ec9c3da4e23747c05faeaac6', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=9a5467bf7b6e9e02ec9c3da4e23747c05faeaac6', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=9a5467bf7b6e9e02ec9c3da4e23747c05faeaac6', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.openwall.com/lists/oss-security/2013/03/05/13', 'name': '[oss-security] 20130305 CVE Requests (maybe): Linux kernel: various info leaks, some NULL ptr derefs', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1795-1', 'name': 'USN-1795-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1796-1', 'name': 'USN-1796-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1793-1', 'name': 'USN-1793-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1794-1', 'name': 'USN-1794-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1797-1', 'name': 'USN-1797-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2013:176', 'name': 'MDVSA-2013:176', 'refsource': 'MANDRIVA', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-updates/2013-12/msg00129.html', 'name': 'openSUSE-SU-2013:1971', 'refsource': 'SUSE', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-310'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.21:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 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{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.8:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.1:rc3:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.1.5:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.1.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.61:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.65:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.50:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.56:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.39:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.26:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.29:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.7.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.7.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.5.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.31:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.66:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.16:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.17:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.22:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.3:rc1:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.3.5:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2:rc7:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2:rc6:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.17:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.45:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.24:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.14:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.15:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.7:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.30:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.67:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_mrg:2.0:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The crypto_report_one function in crypto/crypto_user.c in the report API in the crypto user configuration API in the Linux kernel through 3.8.2 uses an incorrect length value during a copy operation, which allows local users to obtain sensitive information from kernel memory by leveraging the CAP_NET_ADMIN capability.'}] | 2021-07-15T19:16Z | 2013-03-15T20:55Z | Cryptographic Issues | Weaknesses in this category are related to the design and implementation of data confidentiality and integrity. Frequently these deal with the use of encoding techniques, encryption libraries, and hashing algorithms. The weaknesses in this category could lead to a degradation of the quality data if they are not addressed. | https://cwe.mitre.org/data/definitions/310.html | 1 | Mathias Krause | 2013-02-05 18:19:13+01:00 | crypto: user - fix info leaks in report API
Three errors resulting in kernel memory disclosure:
1/ The structures used for the netlink based crypto algorithm report API
are located on the stack. As snprintf() does not fill the remainder of
the buffer with null bytes, those stack bytes will be disclosed to users
of the API. Switch to strncpy() to fix this.
2/ crypto_report_one() does not initialize all field of struct
crypto_user_alg. Fix this to fix the heap info leak.
3/ For the module name we should copy only as many bytes as
module_name() returns -- not as much as the destination buffer could
hold. But the current code does not and therefore copies random data
from behind the end of the module name, as the module name is always
shorter than CRYPTO_MAX_ALG_NAME.
Also switch to use strncpy() to copy the algorithm's name and
driver_name. They are strings, after all.
Signed-off-by: Mathias Krause <[email protected]>
Cc: Steffen Klassert <[email protected]>
Signed-off-by: Herbert Xu <[email protected]> | 9a5467bf7b6e9e02ec9c3da4e23747c05faeaac6 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | crypto_shash_report | crypto_shash_report( struct sk_buff * skb , struct crypto_alg * alg) | ['skb', 'alg'] | static int crypto_shash_report(struct sk_buff *skb, struct crypto_alg *alg)
{
struct crypto_report_hash rhash;
struct shash_alg *salg = __crypto_shash_alg(alg);
snprintf(rhash.type, CRYPTO_MAX_ALG_NAME, "%s", "shash");
rhash.blocksize = alg->cra_blocksize;
rhash.digestsize = salg->digestsize;
if (nla_put(skb, CRYPTOCFGA_REPORT_HASH,
sizeof(struct crypto_report_hash), &rhash))
goto nla_put_failure;
return 0;
nla_put_failure:
return -EMSGSIZE;
} | 87 | True | 1 |
||
CVE-2013-1767 | False | False | False | False | AV:L/AC:H/Au:N/C:C/I:C/A:C | LOCAL | HIGH | NONE | COMPLETE | COMPLETE | COMPLETE | 6.2 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=915592', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=915592', 'refsource': 'CONFIRM', 'tags': ['Patch']}, {'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.7.10', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.7.10', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.openwall.com/lists/oss-security/2013/02/25/23', 'name': '[oss-security] 20130225 Re: kernel: tmpfs use-after-free', 'refsource': 'MLIST', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/5f00110f7273f9ff04ac69a5f85bb535a4fd0987', 'name': 'https://github.com/torvalds/linux/commit/5f00110f7273f9ff04ac69a5f85bb535a4fd0987', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Patch']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5f00110f7273f9ff04ac69a5f85bb535a4fd0987', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5f00110f7273f9ff04ac69a5f85bb535a4fd0987', 'refsource': 'CONFIRM', 'tags': ['Patch']}, {'url': 'http://www.ubuntu.com/usn/USN-1787-1', 'name': 'USN-1787-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1788-1', 'name': 'USN-1788-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1798-1', 'name': 'USN-1798-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1795-1', 'name': 'USN-1795-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1796-1', 'name': 'USN-1796-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1793-1', 'name': 'USN-1793-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1794-1', 'name': 'USN-1794-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1797-1', 'name': 'USN-1797-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1792-1', 'name': 'USN-1792-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-0744.html', 'name': 'RHSA-2013:0744', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2013-05/msg00018.html', 'name': 'openSUSE-SU-2013:0847', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-0882.html', 'name': 'RHSA-2013:0882', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-0928.html', 'name': 'RHSA-2013:0928', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html', 'name': 'openSUSE-SU-2013:0925', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2013:176', 'name': 'MDVSA-2013:176', 'refsource': 'MANDRIVA', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-399'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.21:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.25:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.1.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.11:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0:rc2:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.19:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.22:*:*:*:*:*:*:*', 'cpe_name': 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{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.31:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'Use-after-free vulnerability in the shmem_remount_fs function in mm/shmem.c in the Linux kernel before 3.7.10 allows local users to gain privileges or cause a denial of service (system crash) by remounting a tmpfs filesystem without specifying a required mpol (aka mempolicy) mount option.'}] | 2013-08-22T06:51Z | 2013-02-28T19:55Z | Resource Management Errors | Weaknesses in this category are related to improper management of system resources. | https://cwe.mitre.org/data/definitions/399.html | 1 | Greg Thelen | 2013-02-22 16:36:01-08:00 | tmpfs: fix use-after-free of mempolicy object
The tmpfs remount logic preserves filesystem mempolicy if the mpol=M
option is not specified in the remount request. A new policy can be
specified if mpol=M is given.
Before this patch remounting an mpol bound tmpfs without specifying
mpol= mount option in the remount request would set the filesystem's
mempolicy object to a freed mempolicy object.
To reproduce the problem boot a DEBUG_PAGEALLOC kernel and run:
# mkdir /tmp/x
# mount -t tmpfs -o size=100M,mpol=interleave nodev /tmp/x
# grep /tmp/x /proc/mounts
nodev /tmp/x tmpfs rw,relatime,size=102400k,mpol=interleave:0-3 0 0
# mount -o remount,size=200M nodev /tmp/x
# grep /tmp/x /proc/mounts
nodev /tmp/x tmpfs rw,relatime,size=204800k,mpol=??? 0 0
# note ? garbage in mpol=... output above
# dd if=/dev/zero of=/tmp/x/f count=1
# panic here
Panic:
BUG: unable to handle kernel NULL pointer dereference at (null)
IP: [< (null)>] (null)
[...]
Oops: 0010 [#1] SMP DEBUG_PAGEALLOC
Call Trace:
mpol_shared_policy_init+0xa5/0x160
shmem_get_inode+0x209/0x270
shmem_mknod+0x3e/0xf0
shmem_create+0x18/0x20
vfs_create+0xb5/0x130
do_last+0x9a1/0xea0
path_openat+0xb3/0x4d0
do_filp_open+0x42/0xa0
do_sys_open+0xfe/0x1e0
compat_sys_open+0x1b/0x20
cstar_dispatch+0x7/0x1f
Non-debug kernels will not crash immediately because referencing the
dangling mpol will not cause a fault. Instead the filesystem will
reference a freed mempolicy object, which will cause unpredictable
behavior.
The problem boils down to a dropped mpol reference below if
shmem_parse_options() does not allocate a new mpol:
config = *sbinfo
shmem_parse_options(data, &config, true)
mpol_put(sbinfo->mpol)
sbinfo->mpol = config.mpol /* BUG: saves unreferenced mpol */
This patch avoids the crash by not releasing the mempolicy if
shmem_parse_options() doesn't create a new mpol.
How far back does this issue go? I see it in both 2.6.36 and 3.3. I did
not look back further.
Signed-off-by: Greg Thelen <[email protected]>
Acked-by: Hugh Dickins <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]> | 5f00110f7273f9ff04ac69a5f85bb535a4fd0987 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | shmem_remount_fs | shmem_remount_fs( struct super_block * sb , int * flags , char * data) | ['sb', 'flags', 'data'] | static int shmem_remount_fs(struct super_block *sb, int *flags, char *data)
{
struct shmem_sb_info *sbinfo = SHMEM_SB(sb);
struct shmem_sb_info config = *sbinfo;
unsigned long inodes;
int error = -EINVAL;
if (shmem_parse_options(data, &config, true))
return error;
spin_lock(&sbinfo->stat_lock);
inodes = sbinfo->max_inodes - sbinfo->free_inodes;
if (percpu_counter_compare(&sbinfo->used_blocks, config.max_blocks) > 0)
goto out;
if (config.max_inodes < inodes)
goto out;
/*
* Those tests disallow limited->unlimited while any are in use;
* but we must separately disallow unlimited->limited, because
* in that case we have no record of how much is already in use.
*/
if (config.max_blocks && !sbinfo->max_blocks)
goto out;
if (config.max_inodes && !sbinfo->max_inodes)
goto out;
error = 0;
sbinfo->max_blocks = config.max_blocks;
sbinfo->max_inodes = config.max_inodes;
sbinfo->free_inodes = config.max_inodes - inodes;
mpol_put(sbinfo->mpol);
sbinfo->mpol = config.mpol; /* transfers initial ref */
out:
spin_unlock(&sbinfo->stat_lock);
return error;
} | 193 | True | 1 |
||
CVE-2013-1828 | False | False | False | False | AV:L/AC:M/Au:N/C:C/I:C/A:C | LOCAL | MEDIUM | NONE | COMPLETE | COMPLETE | COMPLETE | 6.9 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://twitter.com/grsecurity/statuses/309805924749541376', 'name': 'http://twitter.com/grsecurity/statuses/309805924749541376', 'refsource': 'MISC', 'tags': []}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=919315', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=919315', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.4', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.4', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://grsecurity.net/~spender/sctp.c', 'name': 'http://grsecurity.net/~spender/sctp.c', 'refsource': 'MISC', 'tags': ['Exploit']}, {'url': 'http://www.openwall.com/lists/oss-security/2013/03/08/2', 'name': '[oss-security] 20130307 Re: CVE Request -- Linux kernel: sctp: SCTP_GET_ASSOC_STATS stack overflow', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=726bc6b092da4c093eb74d13c07184b18c1af0f1', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=726bc6b092da4c093eb74d13c07184b18c1af0f1', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Patch']}, {'url': 'https://github.com/torvalds/linux/commit/726bc6b092da4c093eb74d13c07184b18c1af0f1', 'name': 'https://github.com/torvalds/linux/commit/726bc6b092da4c093eb74d13c07184b18c1af0f1', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Patch']}, {'url': 'http://www.exploit-db.com/exploits/24747', 'name': '24747', 'refsource': 'EXPLOIT-DB', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-20'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.8.3', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.1:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The sctp_getsockopt_assoc_stats function in net/sctp/socket.c in the Linux kernel before 3.8.4 does not validate a size value before proceeding to a copy_from_user operation, which allows local users to gain privileges via a crafted application that contains an SCTP_GET_ASSOC_STATS getsockopt system call.'}] | 2013-12-01T04:27Z | 2013-03-22T11:59Z | Improper Input Validation | The product receives input or data, but it does
not validate or incorrectly validates that the input has the
properties that are required to process the data safely and
correctly. |
Input validation is a frequently-used technique
for checking potentially dangerous inputs in order to
ensure that the inputs are safe for processing within the
code, or when communicating with other components. When
software does not validate input properly, an attacker is
able to craft the input in a form that is not expected by
the rest of the application. This will lead to parts of the
system receiving unintended input, which may result in
altered control flow, arbitrary control of a resource, or
arbitrary code execution.
Input validation is not the only technique for
processing input, however. Other techniques attempt to
transform potentially-dangerous input into something safe, such
as filtering (CWE-790) - which attempts to remove dangerous
inputs - or encoding/escaping (CWE-116), which attempts to
ensure that the input is not misinterpreted when it is included
in output to another component. Other techniques exist as well
(see CWE-138 for more examples.)
Input validation can be applied to:
raw data - strings, numbers, parameters, file contents, etc.
metadata - information about the raw data, such as headers or size
Data can be simple or structured. Structured data
can be composed of many nested layers, composed of
combinations of metadata and raw data, with other simple or
structured data.
Many properties of raw data or metadata may need
to be validated upon entry into the code, such
as:
specified quantities such as size, length, frequency, price, rate, number of operations, time, etc.
implied or derived quantities, such as the actual size of a file instead of a specified size
indexes, offsets, or positions into more complex data structures
symbolic keys or other elements into hash tables, associative arrays, etc.
well-formedness, i.e. syntactic correctness - compliance with expected syntax
lexical token correctness - compliance with rules for what is treated as a token
specified or derived type - the actual type of the input (or what the input appears to be)
consistency - between individual data elements, between raw data and metadata, between references, etc.
conformance to domain-specific rules, e.g. business logic
equivalence - ensuring that equivalent inputs are treated the same
authenticity, ownership, or other attestations about the input, e.g. a cryptographic signature to prove the source of the data
Implied or derived properties of data must often
be calculated or inferred by the code itself. Errors in
deriving properties may be considered a contributing factor
to improper input validation.
Note that "input validation" has very different
meanings to different people, or within different
classification schemes. Caution must be used when
referencing this CWE entry or mapping to it. For example,
some weaknesses might involve inadvertently giving control
to an attacker over an input when they should not be able
to provide an input at all, but sometimes this is referred
to as input validation.
Finally, it is important to emphasize that the
distinctions between input validation and output escaping
are often blurred, and developers must be careful to
understand the difference, including how input validation
is not always sufficient to prevent vulnerabilities,
especially when less stringent data types must be
supported, such as free-form text. Consider a SQL injection
scenario in which a person's last name is inserted into a
query. The name "O'Reilly" would likely pass the validation
step since it is a common last name in the English
language. However, this valid name cannot be directly
inserted into the database because it contains the "'"
apostrophe character, which would need to be escaped or
otherwise transformed. In this case, removing the
apostrophe might reduce the risk of SQL injection, but it
would produce incorrect behavior because the wrong name
would be recorded.
| https://cwe.mitre.org/data/definitions/20.html | 0 | Guenter Roeck | 2013-02-27 10:57:31+00:00 | net/sctp: Validate parameter size for SCTP_GET_ASSOC_STATS
Building sctp may fail with:
In function ‘copy_from_user’,
inlined from ‘sctp_getsockopt_assoc_stats’ at
net/sctp/socket.c:5656:20:
arch/x86/include/asm/uaccess_32.h:211:26: error: call to
‘copy_from_user_overflow’ declared with attribute error: copy_from_user()
buffer size is not provably correct
if built with W=1 due to a missing parameter size validation
before the call to copy_from_user.
Signed-off-by: Guenter Roeck <[email protected]>
Acked-by: Vlad Yasevich <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 726bc6b092da4c093eb74d13c07184b18c1af0f1 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | sctp_getsockopt_assoc_stats | sctp_getsockopt_assoc_stats( struct sock * sk , int len , char __user * optval , int __user * optlen) | ['sk', 'len', 'optval', 'optlen'] | static int sctp_getsockopt_assoc_stats(struct sock *sk, int len,
char __user *optval,
int __user *optlen)
{
struct sctp_assoc_stats sas;
struct sctp_association *asoc = NULL;
/* User must provide at least the assoc id */
if (len < sizeof(sctp_assoc_t))
return -EINVAL;
if (copy_from_user(&sas, optval, len))
return -EFAULT;
asoc = sctp_id2assoc(sk, sas.sas_assoc_id);
if (!asoc)
return -EINVAL;
sas.sas_rtxchunks = asoc->stats.rtxchunks;
sas.sas_gapcnt = asoc->stats.gapcnt;
sas.sas_outofseqtsns = asoc->stats.outofseqtsns;
sas.sas_osacks = asoc->stats.osacks;
sas.sas_isacks = asoc->stats.isacks;
sas.sas_octrlchunks = asoc->stats.octrlchunks;
sas.sas_ictrlchunks = asoc->stats.ictrlchunks;
sas.sas_oodchunks = asoc->stats.oodchunks;
sas.sas_iodchunks = asoc->stats.iodchunks;
sas.sas_ouodchunks = asoc->stats.ouodchunks;
sas.sas_iuodchunks = asoc->stats.iuodchunks;
sas.sas_idupchunks = asoc->stats.idupchunks;
sas.sas_opackets = asoc->stats.opackets;
sas.sas_ipackets = asoc->stats.ipackets;
/* New high max rto observed, will return 0 if not a single
* RTO update took place. obs_rto_ipaddr will be bogus
* in such a case
*/
sas.sas_maxrto = asoc->stats.max_obs_rto;
memcpy(&sas.sas_obs_rto_ipaddr, &asoc->stats.obs_rto_ipaddr,
sizeof(struct sockaddr_storage));
/* Mark beginning of a new observation period */
asoc->stats.max_obs_rto = asoc->rto_min;
/* Allow the struct to grow and fill in as much as possible */
len = min_t(size_t, len, sizeof(sas));
if (put_user(len, optlen))
return -EFAULT;
SCTP_DEBUG_PRINTK("sctp_getsockopt_assoc_stat(%d): %d\n",
len, sas.sas_assoc_id);
if (copy_to_user(optval, &sas, len))
return -EFAULT;
return 0;
} | 320 | True | 1 |
|
CVE-2013-1848 | False | False | False | False | AV:L/AC:H/Au:N/C:C/I:C/A:C | LOCAL | HIGH | NONE | COMPLETE | COMPLETE | COMPLETE | 6.2 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.4', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.4', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=8d0c2d10dd72c5292eda7a06231056a4c972e4cc', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=8d0c2d10dd72c5292eda7a06231056a4c972e4cc', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Patch']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=920783', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=920783', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/8d0c2d10dd72c5292eda7a06231056a4c972e4cc', 'name': 'https://github.com/torvalds/linux/commit/8d0c2d10dd72c5292eda7a06231056a4c972e4cc', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Patch']}, {'url': 'http://www.openwall.com/lists/oss-security/2013/03/20/8', 'name': '[oss-security] 20130320 CVE-2013-1848 -- Linux kernel: ext3: format string issues', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1813-1', 'name': 'USN-1813-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1812-1', 'name': 'USN-1812-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1809-1', 'name': 'USN-1809-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1811-1', 'name': 'USN-1811-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1814-1', 'name': 'USN-1814-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-0928.html', 'name': 'RHSA-2013:0928', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html', 'name': 'openSUSE-SU-2013:0925', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2013:176', 'name': 'MDVSA-2013:176', 'refsource': 'MANDRIVA', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-1026.html', 'name': 'RHSA-2013:1026', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-1051.html', 'name': 'RHSA-2013:1051', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-20'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.8.3', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.1:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'fs/ext3/super.c in the Linux kernel before 3.8.4 uses incorrect arguments to functions in certain circumstances related to printk input, which allows local users to conduct format-string attacks and possibly gain privileges via a crafted application.'}] | 2014-02-07T04:46Z | 2013-03-22T11:59Z | Improper Input Validation | The product receives input or data, but it does
not validate or incorrectly validates that the input has the
properties that are required to process the data safely and
correctly. |
Input validation is a frequently-used technique
for checking potentially dangerous inputs in order to
ensure that the inputs are safe for processing within the
code, or when communicating with other components. When
software does not validate input properly, an attacker is
able to craft the input in a form that is not expected by
the rest of the application. This will lead to parts of the
system receiving unintended input, which may result in
altered control flow, arbitrary control of a resource, or
arbitrary code execution.
Input validation is not the only technique for
processing input, however. Other techniques attempt to
transform potentially-dangerous input into something safe, such
as filtering (CWE-790) - which attempts to remove dangerous
inputs - or encoding/escaping (CWE-116), which attempts to
ensure that the input is not misinterpreted when it is included
in output to another component. Other techniques exist as well
(see CWE-138 for more examples.)
Input validation can be applied to:
raw data - strings, numbers, parameters, file contents, etc.
metadata - information about the raw data, such as headers or size
Data can be simple or structured. Structured data
can be composed of many nested layers, composed of
combinations of metadata and raw data, with other simple or
structured data.
Many properties of raw data or metadata may need
to be validated upon entry into the code, such
as:
specified quantities such as size, length, frequency, price, rate, number of operations, time, etc.
implied or derived quantities, such as the actual size of a file instead of a specified size
indexes, offsets, or positions into more complex data structures
symbolic keys or other elements into hash tables, associative arrays, etc.
well-formedness, i.e. syntactic correctness - compliance with expected syntax
lexical token correctness - compliance with rules for what is treated as a token
specified or derived type - the actual type of the input (or what the input appears to be)
consistency - between individual data elements, between raw data and metadata, between references, etc.
conformance to domain-specific rules, e.g. business logic
equivalence - ensuring that equivalent inputs are treated the same
authenticity, ownership, or other attestations about the input, e.g. a cryptographic signature to prove the source of the data
Implied or derived properties of data must often
be calculated or inferred by the code itself. Errors in
deriving properties may be considered a contributing factor
to improper input validation.
Note that "input validation" has very different
meanings to different people, or within different
classification schemes. Caution must be used when
referencing this CWE entry or mapping to it. For example,
some weaknesses might involve inadvertently giving control
to an attacker over an input when they should not be able
to provide an input at all, but sometimes this is referred
to as input validation.
Finally, it is important to emphasize that the
distinctions between input validation and output escaping
are often blurred, and developers must be careful to
understand the difference, including how input validation
is not always sufficient to prevent vulnerabilities,
especially when less stringent data types must be
supported, such as free-form text. Consider a SQL injection
scenario in which a person's last name is inserted into a
query. The name "O'Reilly" would likely pass the validation
step since it is a common last name in the English
language. However, this valid name cannot be directly
inserted into the database because it contains the "'"
apostrophe character, which would need to be escaped or
otherwise transformed. In this case, removing the
apostrophe might reduce the risk of SQL injection, but it
would produce incorrect behavior because the wrong name
would be recorded.
| https://cwe.mitre.org/data/definitions/20.html | 0 | Lars-Peter Clausen | 2013-03-09 15:28:44+01:00 | ext3: Fix format string issues
ext3_msg() takes the printk prefix as the second parameter and the
format string as the third parameter. Two callers of ext3_msg omit the
prefix and pass the format string as the second parameter and the first
parameter to the format string as the third parameter. In both cases
this string comes from an arbitrary source. Which means the string may
contain format string characters, which will
lead to undefined and potentially harmful behavior.
The issue was introduced in commit 4cf46b67eb("ext3: Unify log messages
in ext3") and is fixed by this patch.
CC: [email protected]
Signed-off-by: Lars-Peter Clausen <[email protected]>
Signed-off-by: Jan Kara <[email protected]> | 8d0c2d10dd72c5292eda7a06231056a4c972e4cc | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | ext3_blkdev_get | ext3_blkdev_get( dev_t dev , struct super_block * sb) | ['dev', 'sb'] | static struct block_device *ext3_blkdev_get(dev_t dev, struct super_block *sb)
{
struct block_device *bdev;
char b[BDEVNAME_SIZE];
bdev = blkdev_get_by_dev(dev, FMODE_READ|FMODE_WRITE|FMODE_EXCL, sb);
if (IS_ERR(bdev))
goto fail;
return bdev;
fail:
ext3_msg(sb, "error: failed to open journal device %s: %ld",
__bdevname(dev, b), PTR_ERR(bdev));
return NULL;
} | 75 | True | 1 |
|
CVE-2013-1848 | False | False | False | False | AV:L/AC:H/Au:N/C:C/I:C/A:C | LOCAL | HIGH | NONE | COMPLETE | COMPLETE | COMPLETE | 6.2 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.4', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.4', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=8d0c2d10dd72c5292eda7a06231056a4c972e4cc', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=8d0c2d10dd72c5292eda7a06231056a4c972e4cc', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Patch']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=920783', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=920783', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/8d0c2d10dd72c5292eda7a06231056a4c972e4cc', 'name': 'https://github.com/torvalds/linux/commit/8d0c2d10dd72c5292eda7a06231056a4c972e4cc', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Patch']}, {'url': 'http://www.openwall.com/lists/oss-security/2013/03/20/8', 'name': '[oss-security] 20130320 CVE-2013-1848 -- Linux kernel: ext3: format string issues', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1813-1', 'name': 'USN-1813-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1812-1', 'name': 'USN-1812-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1809-1', 'name': 'USN-1809-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1811-1', 'name': 'USN-1811-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1814-1', 'name': 'USN-1814-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-0928.html', 'name': 'RHSA-2013:0928', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html', 'name': 'openSUSE-SU-2013:0925', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2013:176', 'name': 'MDVSA-2013:176', 'refsource': 'MANDRIVA', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-1026.html', 'name': 'RHSA-2013:1026', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-1051.html', 'name': 'RHSA-2013:1051', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-20'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.8.3', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.1:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'fs/ext3/super.c in the Linux kernel before 3.8.4 uses incorrect arguments to functions in certain circumstances related to printk input, which allows local users to conduct format-string attacks and possibly gain privileges via a crafted application.'}] | 2014-02-07T04:46Z | 2013-03-22T11:59Z | Improper Input Validation | The product receives input or data, but it does
not validate or incorrectly validates that the input has the
properties that are required to process the data safely and
correctly. |
Input validation is a frequently-used technique
for checking potentially dangerous inputs in order to
ensure that the inputs are safe for processing within the
code, or when communicating with other components. When
software does not validate input properly, an attacker is
able to craft the input in a form that is not expected by
the rest of the application. This will lead to parts of the
system receiving unintended input, which may result in
altered control flow, arbitrary control of a resource, or
arbitrary code execution.
Input validation is not the only technique for
processing input, however. Other techniques attempt to
transform potentially-dangerous input into something safe, such
as filtering (CWE-790) - which attempts to remove dangerous
inputs - or encoding/escaping (CWE-116), which attempts to
ensure that the input is not misinterpreted when it is included
in output to another component. Other techniques exist as well
(see CWE-138 for more examples.)
Input validation can be applied to:
raw data - strings, numbers, parameters, file contents, etc.
metadata - information about the raw data, such as headers or size
Data can be simple or structured. Structured data
can be composed of many nested layers, composed of
combinations of metadata and raw data, with other simple or
structured data.
Many properties of raw data or metadata may need
to be validated upon entry into the code, such
as:
specified quantities such as size, length, frequency, price, rate, number of operations, time, etc.
implied or derived quantities, such as the actual size of a file instead of a specified size
indexes, offsets, or positions into more complex data structures
symbolic keys or other elements into hash tables, associative arrays, etc.
well-formedness, i.e. syntactic correctness - compliance with expected syntax
lexical token correctness - compliance with rules for what is treated as a token
specified or derived type - the actual type of the input (or what the input appears to be)
consistency - between individual data elements, between raw data and metadata, between references, etc.
conformance to domain-specific rules, e.g. business logic
equivalence - ensuring that equivalent inputs are treated the same
authenticity, ownership, or other attestations about the input, e.g. a cryptographic signature to prove the source of the data
Implied or derived properties of data must often
be calculated or inferred by the code itself. Errors in
deriving properties may be considered a contributing factor
to improper input validation.
Note that "input validation" has very different
meanings to different people, or within different
classification schemes. Caution must be used when
referencing this CWE entry or mapping to it. For example,
some weaknesses might involve inadvertently giving control
to an attacker over an input when they should not be able
to provide an input at all, but sometimes this is referred
to as input validation.
Finally, it is important to emphasize that the
distinctions between input validation and output escaping
are often blurred, and developers must be careful to
understand the difference, including how input validation
is not always sufficient to prevent vulnerabilities,
especially when less stringent data types must be
supported, such as free-form text. Consider a SQL injection
scenario in which a person's last name is inserted into a
query. The name "O'Reilly" would likely pass the validation
step since it is a common last name in the English
language. However, this valid name cannot be directly
inserted into the database because it contains the "'"
apostrophe character, which would need to be escaped or
otherwise transformed. In this case, removing the
apostrophe might reduce the risk of SQL injection, but it
would produce incorrect behavior because the wrong name
would be recorded.
| https://cwe.mitre.org/data/definitions/20.html | 0 | Lars-Peter Clausen | 2013-03-09 15:28:44+01:00 | ext3: Fix format string issues
ext3_msg() takes the printk prefix as the second parameter and the
format string as the third parameter. Two callers of ext3_msg omit the
prefix and pass the format string as the second parameter and the first
parameter to the format string as the third parameter. In both cases
this string comes from an arbitrary source. Which means the string may
contain format string characters, which will
lead to undefined and potentially harmful behavior.
The issue was introduced in commit 4cf46b67eb("ext3: Unify log messages
in ext3") and is fixed by this patch.
CC: [email protected]
Signed-off-by: Lars-Peter Clausen <[email protected]>
Signed-off-by: Jan Kara <[email protected]> | 8d0c2d10dd72c5292eda7a06231056a4c972e4cc | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | get_sb_block | get_sb_block( void ** data , struct super_block * sb) | ['data', 'sb'] | static ext3_fsblk_t get_sb_block(void **data, struct super_block *sb)
{
ext3_fsblk_t sb_block;
char *options = (char *) *data;
if (!options || strncmp(options, "sb=", 3) != 0)
return 1; /* Default location */
options += 3;
/*todo: use simple_strtoll with >32bit ext3 */
sb_block = simple_strtoul(options, &options, 0);
if (*options && *options != ',') {
ext3_msg(sb, "error: invalid sb specification: %s",
(char *) *data);
return 1;
}
if (*options == ',')
options++;
*data = (void *) options;
return sb_block;
} | 113 | True | 1 |
|
CVE-2013-1792 | False | False | False | False | AV:L/AC:M/Au:N/C:N/I:N/A:C | LOCAL | MEDIUM | NONE | NONE | NONE | COMPLETE | 4.7 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=916646', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=916646', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.openwall.com/lists/oss-security/2013/03/07/1', 'name': '[oss-security] 20130307 CVE-2013-1792 Linux kernel: KEYS: race with concurrent install_user_keyrings()', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=0da9dfdd2cd9889201bc6f6f43580c99165cd087', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=0da9dfdd2cd9889201bc6f6f43580c99165cd087', 'refsource': 'CONFIRM', 'tags': ['Patch']}, {'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.3', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1787-1', 'name': 'USN-1787-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1788-1', 'name': 'USN-1788-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1798-1', 'name': 'USN-1798-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1796-1', 'name': 'USN-1796-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1793-1', 'name': 'USN-1793-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1794-1', 'name': 'USN-1794-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1797-1', 'name': 'USN-1797-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1792-1', 'name': 'USN-1792-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1795-1', 'name': 'USN-1795-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-0744.html', 'name': 'RHSA-2013:0744', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00018.html', 'name': 'openSUSE-SU-2013:1187', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2013:176', 'name': 'MDVSA-2013:176', 'refsource': 'MANDRIVA', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/0da9dfdd2cd9889201bc6f6f43580c99165cd087', 'name': 'https://github.com/torvalds/linux/commit/0da9dfdd2cd9889201bc6f6f43580c99165cd087', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2014-02/msg00002.html', 'name': 'openSUSE-SU-2014:0204', 'refsource': 'SUSE', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-362'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.8.2', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.1:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'Race condition in the install_user_keyrings function in security/keys/process_keys.c in the Linux kernel before 3.8.3 allows local users to cause a denial of service (NULL pointer dereference and system crash) via crafted keyctl system calls that trigger keyring operations in simultaneous threads.'}] | 2014-03-06T04:44Z | 2013-03-22T11:59Z | Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') | The program contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. |
This can have security implications when the expected synchronization is in security-critical code, such as recording whether a user is authenticated or modifying important state information that should not be influenced by an outsider.
A race condition occurs within concurrent environments, and is effectively a property of a code sequence. Depending on the context, a code sequence may be in the form of a function call, a small number of instructions, a series of program invocations, etc.
A race condition violates these properties, which are closely related:
Exclusivity - the code sequence is given exclusive access to the shared resource, i.e., no other code sequence can modify properties of the shared resource before the original sequence has completed execution.
Atomicity - the code sequence is behaviorally atomic, i.e., no other thread or process can concurrently execute the same sequence of instructions (or a subset) against the same resource.
A race condition exists when an "interfering code sequence" can still access the shared resource, violating exclusivity. Programmers may assume that certain code sequences execute too quickly to be affected by an interfering code sequence; when they are not, this violates atomicity. For example, the single "x++" statement may appear atomic at the code layer, but it is actually non-atomic at the instruction layer, since it involves a read (the original value of x), followed by a computation (x+1), followed by a write (save the result to x).
The interfering code sequence could be "trusted" or "untrusted." A trusted interfering code sequence occurs within the program; it cannot be modified by the attacker, and it can only be invoked indirectly. An untrusted interfering code sequence can be authored directly by the attacker, and typically it is external to the vulnerable program.
| https://cwe.mitre.org/data/definitions/362.html | 0 | David Howells | 2013-03-12 16:44:31+11:00 | keys: fix race with concurrent install_user_keyrings()
This fixes CVE-2013-1792.
There is a race in install_user_keyrings() that can cause a NULL pointer
dereference when called concurrently for the same user if the uid and
uid-session keyrings are not yet created. It might be possible for an
unprivileged user to trigger this by calling keyctl() from userspace in
parallel immediately after logging in.
Assume that we have two threads both executing lookup_user_key(), both
looking for KEY_SPEC_USER_SESSION_KEYRING.
THREAD A THREAD B
=============================== ===============================
==>call install_user_keyrings();
if (!cred->user->session_keyring)
==>call install_user_keyrings()
...
user->uid_keyring = uid_keyring;
if (user->uid_keyring)
return 0;
<==
key = cred->user->session_keyring [== NULL]
user->session_keyring = session_keyring;
atomic_inc(&key->usage); [oops]
At the point thread A dereferences cred->user->session_keyring, thread B
hasn't updated user->session_keyring yet, but thread A assumes it is
populated because install_user_keyrings() returned ok.
The race window is really small but can be exploited if, for example,
thread B is interrupted or preempted after initializing uid_keyring, but
before doing setting session_keyring.
This couldn't be reproduced on a stock kernel. However, after placing
systemtap probe on 'user->session_keyring = session_keyring;' that
introduced some delay, the kernel could be crashed reliably.
Fix this by checking both pointers before deciding whether to return.
Alternatively, the test could be done away with entirely as it is checked
inside the mutex - but since the mutex is global, that may not be the best
way.
Signed-off-by: David Howells <[email protected]>
Reported-by: Mateusz Guzik <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: James Morris <[email protected]> | 0da9dfdd2cd9889201bc6f6f43580c99165cd087 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | install_user_keyrings | install_user_keyrings( void) | ['void'] | int install_user_keyrings(void)
{
struct user_struct *user;
const struct cred *cred;
struct key *uid_keyring, *session_keyring;
key_perm_t user_keyring_perm;
char buf[20];
int ret;
uid_t uid;
user_keyring_perm = (KEY_POS_ALL & ~KEY_POS_SETATTR) | KEY_USR_ALL;
cred = current_cred();
user = cred->user;
uid = from_kuid(cred->user_ns, user->uid);
kenter("%p{%u}", user, uid);
if (user->uid_keyring) {
kleave(" = 0 [exist]");
return 0;
}
mutex_lock(&key_user_keyring_mutex);
ret = 0;
if (!user->uid_keyring) {
/* get the UID-specific keyring
* - there may be one in existence already as it may have been
* pinned by a session, but the user_struct pointing to it
* may have been destroyed by setuid */
sprintf(buf, "_uid.%u", uid);
uid_keyring = find_keyring_by_name(buf, true);
if (IS_ERR(uid_keyring)) {
uid_keyring = keyring_alloc(buf, user->uid, INVALID_GID,
cred, user_keyring_perm,
KEY_ALLOC_IN_QUOTA, NULL);
if (IS_ERR(uid_keyring)) {
ret = PTR_ERR(uid_keyring);
goto error;
}
}
/* get a default session keyring (which might also exist
* already) */
sprintf(buf, "_uid_ses.%u", uid);
session_keyring = find_keyring_by_name(buf, true);
if (IS_ERR(session_keyring)) {
session_keyring =
keyring_alloc(buf, user->uid, INVALID_GID,
cred, user_keyring_perm,
KEY_ALLOC_IN_QUOTA, NULL);
if (IS_ERR(session_keyring)) {
ret = PTR_ERR(session_keyring);
goto error_release;
}
/* we install a link from the user session keyring to
* the user keyring */
ret = key_link(session_keyring, uid_keyring);
if (ret < 0)
goto error_release_both;
}
/* install the keyrings */
user->uid_keyring = uid_keyring;
user->session_keyring = session_keyring;
}
mutex_unlock(&key_user_keyring_mutex);
kleave(" = 0");
return 0;
error_release_both:
key_put(session_keyring);
error_release:
key_put(uid_keyring);
error:
mutex_unlock(&key_user_keyring_mutex);
kleave(" = %d", ret);
return ret;
} | 329 | True | 1 |
|
CVE-2013-1860 | False | False | False | True | AV:L/AC:M/Au:N/C:C/I:C/A:C | LOCAL | MEDIUM | NONE | COMPLETE | COMPLETE | COMPLETE | 6.9 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'https://github.com/torvalds/linux/commit/c0f5ecee4e741667b2493c742b60b6218d40b3aa', 'name': 'https://github.com/torvalds/linux/commit/c0f5ecee4e741667b2493c742b60b6218d40b3aa', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Patch']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=921970', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=921970', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=c0f5ecee4e741667b2493c742b60b6218d40b3aa', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=c0f5ecee4e741667b2493c742b60b6218d40b3aa', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Patch']}, {'url': 'http://www.openwall.com/lists/oss-security/2013/03/15/3', 'name': '[oss-security] 20130314 Re: CVE Request/Guidance: Linux kernel cdc-wdm buffer overflow triggered by device', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.4', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.4', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1829-1', 'name': 'USN-1829-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1813-1', 'name': 'USN-1813-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1812-1', 'name': 'USN-1812-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1809-1', 'name': 'USN-1809-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1811-1', 'name': 'USN-1811-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1814-1', 'name': 'USN-1814-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2013:176', 'name': 'MDVSA-2013:176', 'refsource': 'MANDRIVA', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2014-0328.html', 'name': 'RHSA-2014:0328', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2014-0339.html', 'name': 'RHSA-2014:0339', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://www.securityfocus.com/bid/58510', 'name': '58510', 'refsource': 'BID', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-119'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.8.3', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.1:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'Heap-based buffer overflow in the wdm_in_callback function in drivers/usb/class/cdc-wdm.c in the Linux kernel before 3.8.4 allows physically proximate attackers to cause a denial of service (system crash) or possibly execute arbitrary code via a crafted cdc-wdm USB device.'}] | 2016-12-08T03:03Z | 2013-03-22T11:59Z | Improper Restriction of Operations within the Bounds of a Memory Buffer | The software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. |
Certain languages allow direct addressing of memory locations and do not automatically ensure that these locations are valid for the memory buffer that is being referenced. This can cause read or write operations to be performed on memory locations that may be associated with other variables, data structures, or internal program data.
As a result, an attacker may be able to execute arbitrary code, alter the intended control flow, read sensitive information, or cause the system to crash.
| https://cwe.mitre.org/data/definitions/119.html | 0 | Oliver Neukum | 2013-03-12 14:52:42+01:00 | USB: cdc-wdm: fix buffer overflow
The buffer for responses must not overflow.
If this would happen, set a flag, drop the data and return
an error after user space has read all remaining data.
Signed-off-by: Oliver Neukum <[email protected]>
CC: [email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]> | c0f5ecee4e741667b2493c742b60b6218d40b3aa | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | wdm_in_callback | wdm_in_callback( struct urb * urb) | ['urb'] | static void wdm_in_callback(struct urb *urb)
{
struct wdm_device *desc = urb->context;
int status = urb->status;
spin_lock(&desc->iuspin);
clear_bit(WDM_RESPONDING, &desc->flags);
if (status) {
switch (status) {
case -ENOENT:
dev_dbg(&desc->intf->dev,
"nonzero urb status received: -ENOENT");
goto skip_error;
case -ECONNRESET:
dev_dbg(&desc->intf->dev,
"nonzero urb status received: -ECONNRESET");
goto skip_error;
case -ESHUTDOWN:
dev_dbg(&desc->intf->dev,
"nonzero urb status received: -ESHUTDOWN");
goto skip_error;
case -EPIPE:
dev_err(&desc->intf->dev,
"nonzero urb status received: -EPIPE\n");
break;
default:
dev_err(&desc->intf->dev,
"Unexpected error %d\n", status);
break;
}
}
desc->rerr = status;
desc->reslength = urb->actual_length;
memmove(desc->ubuf + desc->length, desc->inbuf, desc->reslength);
desc->length += desc->reslength;
skip_error:
wake_up(&desc->wait);
set_bit(WDM_READ, &desc->flags);
spin_unlock(&desc->iuspin);
} | 217 | True | 1 |
|
CVE-2013-2206 | False | False | False | False | AV:N/AC:H/Au:N/C:N/I:N/A:C | NETWORK | HIGH | NONE | NONE | NONE | COMPLETE | 5.4 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://www.openwall.com/lists/oss-security/2013/06/21/1', 'name': '[oss-security] 20130620 Re: CVE Request -- Linux kernel: sctp: duplicate cookie handling NULL pointer dereference', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.5', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.5', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=f2815633504b442ca0b0605c16bf3d88a3a0fcea', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=f2815633504b442ca0b0605c16bf3d88a3a0fcea', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Patch']}, {'url': 'https://github.com/torvalds/linux/commit/f2815633504b442ca0b0605c16bf3d88a3a0fcea', 'name': 'https://github.com/torvalds/linux/commit/f2815633504b442ca0b0605c16bf3d88a3a0fcea', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Patch']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=976562', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=976562', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1939-1', 'name': 'USN-1939-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.debian.org/security/2013/dsa-2766', 'name': 'DSA-2766', 'refsource': 'DEBIAN', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-updates/2013-12/msg00129.html', 'name': 'openSUSE-SU-2013:1971', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-1166.html', 'name': 'RHSA-2013:1166', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-1173.html', 'name': 'RHSA-2013:1173', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2013-11/msg00024.html', 'name': 'SUSE-SU-2013:1750', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2013-11/msg00023.html', 'name': 'SUSE-SU-2013:1749', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2013-11/msg00021.html', 'name': 'SUSE-SU-2013:1748', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2013-11/msg00020.html', 'name': 'SUSE-SU-2013:1744', 'refsource': 'SUSE', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'NVD-CWE-Other'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.21:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.30:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.25:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.1.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.11:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0:rc2:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.19:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.22:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.6.7:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.13:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4:rc3:*:*:*:*:x86:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.1:*:*:*:*:*:x86:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0:rc7:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.5:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.18:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.1:rc4:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.1:rc1:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.46:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.5.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 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{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4:rc7:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.23:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.48:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.19:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.32:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.7.9:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4:rc2:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.28:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 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'cpe:2.3:o:linux:linux_kernel:3.0.52:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.35:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.36:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.8.4', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.7.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.2:*:*:*:*:*:x86:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.7.8:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 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'cpe:2.3:o:linux:linux_kernel:3.0.8:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.7.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.6.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.3:*:*:*:*:*:x86:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.27:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.14:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.15:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.3.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.25:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.24:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.9:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.10:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.1.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.62:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0:rc1:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.19:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.3:rc2:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.3.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2:rc4:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.64:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0:rc6:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0:rc3:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.42:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.13:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.10:*:*:*:*:*:*:*', 'cpe_name': []}, 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{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4:rc4:*:*:*:*:x86:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4:rc1:*:*:*:*:x86:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.8:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.32:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4:rc6:*:*:*:*:x86:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.22:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.3:rc7:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.3.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 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{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.30:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.67:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.66:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The sctp_sf_do_5_2_4_dupcook function in net/sctp/sm_statefuns.c in the SCTP implementation in the Linux kernel before 3.8.5 does not properly handle associations during the processing of a duplicate COOKIE ECHO chunk, which allows remote attackers to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via crafted SCTP traffic.'}] | 2018-01-09T02:29Z | 2013-07-04T21:55Z | Other | NVD is only using a subset of CWE for mapping instead of the entire CWE, and the weakness type is not covered by that subset. | Insufficient Information | https://nvd.nist.gov/vuln/categories | 0 | Vlad Yasevich | 2013-03-12 15:53:23+00:00 | sctp: Use correct sideffect command in duplicate cookie handling
When SCTP is done processing a duplicate cookie chunk, it tries
to delete a newly created association. For that, it has to set
the right association for the side-effect processing to work.
However, when it uses the SCTP_CMD_NEW_ASOC command, that performs
more work then really needed (like hashing the associationa and
assigning it an id) and there is no point to do that only to
delete the association as a next step. In fact, it also creates
an impossible condition where an association may be found by
the getsockopt() call, and that association is empty. This
causes a crash in some sctp getsockopts.
The solution is rather simple. We simply use SCTP_CMD_SET_ASOC
command that doesn't have all the overhead and does exactly
what we need.
Reported-by: Karl Heiss <[email protected]>
Tested-by: Karl Heiss <[email protected]>
CC: Neil Horman <[email protected]>
Signed-off-by: Vlad Yasevich <[email protected]>
Acked-by: Neil Horman <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | f2815633504b442ca0b0605c16bf3d88a3a0fcea | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | sctp_sf_do_5_2_4_dupcook | sctp_sf_do_5_2_4_dupcook( struct net * net , const struct sctp_endpoint * ep , const struct sctp_association * asoc , const sctp_subtype_t type , void * arg , sctp_cmd_seq_t * commands) | ['net', 'ep', 'asoc', 'type', 'arg', 'commands'] | sctp_disposition_t sctp_sf_do_5_2_4_dupcook(struct net *net,
const struct sctp_endpoint *ep,
const struct sctp_association *asoc,
const sctp_subtype_t type,
void *arg,
sctp_cmd_seq_t *commands)
{
sctp_disposition_t retval;
struct sctp_chunk *chunk = arg;
struct sctp_association *new_asoc;
int error = 0;
char action;
struct sctp_chunk *err_chk_p;
/* Make sure that the chunk has a valid length from the protocol
* perspective. In this case check to make sure we have at least
* enough for the chunk header. Cookie length verification is
* done later.
*/
if (!sctp_chunk_length_valid(chunk, sizeof(sctp_chunkhdr_t)))
return sctp_sf_violation_chunklen(net, ep, asoc, type, arg,
commands);
/* "Decode" the chunk. We have no optional parameters so we
* are in good shape.
*/
chunk->subh.cookie_hdr = (struct sctp_signed_cookie *)chunk->skb->data;
if (!pskb_pull(chunk->skb, ntohs(chunk->chunk_hdr->length) -
sizeof(sctp_chunkhdr_t)))
goto nomem;
/* In RFC 2960 5.2.4 3, if both Verification Tags in the State Cookie
* of a duplicate COOKIE ECHO match the Verification Tags of the
* current association, consider the State Cookie valid even if
* the lifespan is exceeded.
*/
new_asoc = sctp_unpack_cookie(ep, asoc, chunk, GFP_ATOMIC, &error,
&err_chk_p);
/* FIXME:
* If the re-build failed, what is the proper error path
* from here?
*
* [We should abort the association. --piggy]
*/
if (!new_asoc) {
/* FIXME: Several errors are possible. A bad cookie should
* be silently discarded, but think about logging it too.
*/
switch (error) {
case -SCTP_IERROR_NOMEM:
goto nomem;
case -SCTP_IERROR_STALE_COOKIE:
sctp_send_stale_cookie_err(net, ep, asoc, chunk, commands,
err_chk_p);
return sctp_sf_pdiscard(net, ep, asoc, type, arg, commands);
case -SCTP_IERROR_BAD_SIG:
default:
return sctp_sf_pdiscard(net, ep, asoc, type, arg, commands);
}
}
/* Compare the tie_tag in cookie with the verification tag of
* current association.
*/
action = sctp_tietags_compare(new_asoc, asoc);
switch (action) {
case 'A': /* Association restart. */
retval = sctp_sf_do_dupcook_a(net, ep, asoc, chunk, commands,
new_asoc);
break;
case 'B': /* Collision case B. */
retval = sctp_sf_do_dupcook_b(net, ep, asoc, chunk, commands,
new_asoc);
break;
case 'C': /* Collision case C. */
retval = sctp_sf_do_dupcook_c(net, ep, asoc, chunk, commands,
new_asoc);
break;
case 'D': /* Collision case D. */
retval = sctp_sf_do_dupcook_d(net, ep, asoc, chunk, commands,
new_asoc);
break;
default: /* Discard packet for all others. */
retval = sctp_sf_pdiscard(net, ep, asoc, type, arg, commands);
break;
}
/* Delete the tempory new association. */
sctp_add_cmd_sf(commands, SCTP_CMD_NEW_ASOC, SCTP_ASOC(new_asoc));
sctp_add_cmd_sf(commands, SCTP_CMD_DELETE_TCB, SCTP_NULL());
/* Restore association pointer to provide SCTP command interpeter
* with a valid context in case it needs to manipulate
* the queues */
sctp_add_cmd_sf(commands, SCTP_CMD_SET_ASOC,
SCTP_ASOC((struct sctp_association *)asoc));
return retval;
nomem:
return SCTP_DISPOSITION_NOMEM;
} | 402 | True | 1 |
|
CVE-2013-1858 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.3', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.openwall.com/lists/oss-security/2013/03/14/6', 'name': '[oss-security] 20130314 Re: CLONE_NEWUSER|CLONE_FS root exploit', 'refsource': 'MLIST', 'tags': []}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=921448', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=921448', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=e66eded8309ebf679d3d3c1f5820d1f2ca332c71', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=e66eded8309ebf679d3d3c1f5820d1f2ca332c71', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://stealth.openwall.net/xSports/clown-newuser.c', 'name': 'http://stealth.openwall.net/xSports/clown-newuser.c', 'refsource': 'MISC', 'tags': ['Exploit']}, {'url': 'https://github.com/torvalds/linux/commit/e66eded8309ebf679d3d3c1f5820d1f2ca332c71', 'name': 'https://github.com/torvalds/linux/commit/e66eded8309ebf679d3d3c1f5820d1f2ca332c71', 'refsource': 'CONFIRM', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.21:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.30:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.25:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.1.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.11:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0:rc2:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.19:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.22:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.6.7:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.13:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.3:rc4:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.5:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.23:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.1:rc1:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.26:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.46:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.5:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.18:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.48:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.38:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.5.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.1:rc4:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0:rc7:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.63:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.68:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.47:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.7.7:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.7.9:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4:rc3:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.3.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.27:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2:rc5:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.28:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.18:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.3:rc3:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.3:rc5:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.26:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2:rc2:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.58:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.18:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.11:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.12:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4:rc7:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.27:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.23:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.3.8:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.16:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.51:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.52:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.37:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.35:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.5.7:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4:rc2:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0:rc4:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.57:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.36:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.19:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.34:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.32:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.6.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.6.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.5.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.5:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4:rc1:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.19:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.3.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.29:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.14:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.8.2', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.7.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.7.8:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.6.10:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.6.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.9:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.31:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.3.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2:rc4:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.20:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.1:rc2:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.1.9:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.64:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.55:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.44:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.16:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.13:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.8:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.7.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.7:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.6.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.6.9:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.24:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.25:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2:rc3:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.15:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.1.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0:rc1:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.17:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.33:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.7.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.5.5:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.29:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.14:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.15:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.3:rc2:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.3.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.24:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 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'cpe:2.3:o:linux:linux_kernel:3.0.21:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.31:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The clone system-call implementation in the Linux kernel before 3.8.3 does not properly handle a combination of the CLONE_NEWUSER and CLONE_FS flags, which allows local users to gain privileges by calling chroot and leveraging the sharing of the / directory between a parent process and a child process.'}] | 2013-04-08T14:44Z | 2013-04-05T21:55Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Eric W. Biederman | 2013-03-13 11:51:49-07:00 | userns: Don't allow CLONE_NEWUSER | CLONE_FS
Don't allowing sharing the root directory with processes in a
different user namespace. There doesn't seem to be any point, and to
allow it would require the overhead of putting a user namespace
reference in fs_struct (for permission checks) and incrementing that
reference count on practically every call to fork.
So just perform the inexpensive test of forbidding sharing fs_struct
acrosss processes in different user namespaces. We already disallow
other forms of threading when unsharing a user namespace so this
should be no real burden in practice.
This updates setns, clone, and unshare to disallow multiple user
namespaces sharing an fs_struct.
Cc: [email protected]
Signed-off-by: "Eric W. Biederman" <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]> | e66eded8309ebf679d3d3c1f5820d1f2ca332c71 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | SYSCALL_DEFINE1 | SYSCALL_DEFINE1( unshare , unsigned long , unshare_flags) | ['unshare', 'long', 'unshare_flags'] | SYSCALL_DEFINE1(unshare, unsigned long, unshare_flags)
{
struct fs_struct *fs, *new_fs = NULL;
struct files_struct *fd, *new_fd = NULL;
struct cred *new_cred = NULL;
struct nsproxy *new_nsproxy = NULL;
int do_sysvsem = 0;
int err;
/*
* If unsharing a user namespace must also unshare the thread.
*/
if (unshare_flags & CLONE_NEWUSER)
unshare_flags |= CLONE_THREAD;
/*
* If unsharing a pid namespace must also unshare the thread.
*/
if (unshare_flags & CLONE_NEWPID)
unshare_flags |= CLONE_THREAD;
/*
* If unsharing a thread from a thread group, must also unshare vm.
*/
if (unshare_flags & CLONE_THREAD)
unshare_flags |= CLONE_VM;
/*
* If unsharing vm, must also unshare signal handlers.
*/
if (unshare_flags & CLONE_VM)
unshare_flags |= CLONE_SIGHAND;
/*
* If unsharing namespace, must also unshare filesystem information.
*/
if (unshare_flags & CLONE_NEWNS)
unshare_flags |= CLONE_FS;
err = check_unshare_flags(unshare_flags);
if (err)
goto bad_unshare_out;
/*
* CLONE_NEWIPC must also detach from the undolist: after switching
* to a new ipc namespace, the semaphore arrays from the old
* namespace are unreachable.
*/
if (unshare_flags & (CLONE_NEWIPC|CLONE_SYSVSEM))
do_sysvsem = 1;
err = unshare_fs(unshare_flags, &new_fs);
if (err)
goto bad_unshare_out;
err = unshare_fd(unshare_flags, &new_fd);
if (err)
goto bad_unshare_cleanup_fs;
err = unshare_userns(unshare_flags, &new_cred);
if (err)
goto bad_unshare_cleanup_fd;
err = unshare_nsproxy_namespaces(unshare_flags, &new_nsproxy,
new_cred, new_fs);
if (err)
goto bad_unshare_cleanup_cred;
if (new_fs || new_fd || do_sysvsem || new_cred || new_nsproxy) {
if (do_sysvsem) {
/*
* CLONE_SYSVSEM is equivalent to sys_exit().
*/
exit_sem(current);
}
if (new_nsproxy)
switch_task_namespaces(current, new_nsproxy);
task_lock(current);
if (new_fs) {
fs = current->fs;
spin_lock(&fs->lock);
current->fs = new_fs;
if (--fs->users)
new_fs = NULL;
else
new_fs = fs;
spin_unlock(&fs->lock);
}
if (new_fd) {
fd = current->files;
current->files = new_fd;
new_fd = fd;
}
task_unlock(current);
if (new_cred) {
/* Install the new user namespace */
commit_creds(new_cred);
new_cred = NULL;
}
}
bad_unshare_cleanup_cred:
if (new_cred)
put_cred(new_cred);
bad_unshare_cleanup_fd:
if (new_fd)
put_files_struct(new_fd);
bad_unshare_cleanup_fs:
if (new_fs)
free_fs_struct(new_fs);
bad_unshare_out:
return err;
} | 374 | True | 1 |
||
CVE-2013-1958 | False | False | False | False | AV:L/AC:M/Au:N/C:N/I:P/A:N | LOCAL | MEDIUM | NONE | NONE | PARTIAL | NONE | 1.9 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://www.openwall.com/lists/oss-security/2013/04/16/11', 'name': '[oss-security] 20130416 Re: Re: Summary of security bugs (now fixed) in user namespaces', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.6', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.6', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=92f28d973cce45ef5823209aab3138eb45d8b349', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=92f28d973cce45ef5823209aab3138eb45d8b349', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/92f28d973cce45ef5823209aab3138eb45d8b349', 'name': 'https://github.com/torvalds/linux/commit/92f28d973cce45ef5823209aab3138eb45d8b349', 'refsource': 'CONFIRM', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.8.5', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.4:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The scm_check_creds function in net/core/scm.c in the Linux kernel before 3.8.6 does not properly enforce capability requirements for controlling the PID value associated with a UNIX domain socket, which allows local users to bypass intended access restrictions by leveraging the time interval during which a user namespace has been created but a PID namespace has not been created.'}] | 2013-05-01T04:00Z | 2013-04-24T19:55Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Eric W. Biederman | 2013-03-15 01:03:33-07:00 | scm: Require CAP_SYS_ADMIN over the current pidns to spoof pids.
Don't allow spoofing pids over unix domain sockets in the corner
cases where a user has created a user namespace but has not yet
created a pid namespace.
Cc: [email protected]
Reported-by: Andy Lutomirski <[email protected]>
Signed-off-by: "Eric W. Biederman" <[email protected]> | 92f28d973cce45ef5823209aab3138eb45d8b349 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | scm_check_creds | scm_check_creds( struct ucred * creds) | ['creds'] | static __inline__ int scm_check_creds(struct ucred *creds)
{
const struct cred *cred = current_cred();
kuid_t uid = make_kuid(cred->user_ns, creds->uid);
kgid_t gid = make_kgid(cred->user_ns, creds->gid);
if (!uid_valid(uid) || !gid_valid(gid))
return -EINVAL;
if ((creds->pid == task_tgid_vnr(current) || nsown_capable(CAP_SYS_ADMIN)) &&
((uid_eq(uid, cred->uid) || uid_eq(uid, cred->euid) ||
uid_eq(uid, cred->suid)) || nsown_capable(CAP_SETUID)) &&
((gid_eq(gid, cred->gid) || gid_eq(gid, cred->egid) ||
gid_eq(gid, cred->sgid)) || nsown_capable(CAP_SETGID))) {
return 0;
}
return -EPERM;
} | 164 | True | 1 |
||
CVE-2013-1797 | False | False | False | False | AV:A/AC:H/Au:N/C:C/I:C/A:C | ADJACENT_NETWORK | HIGH | NONE | COMPLETE | COMPLETE | COMPLETE | 6.8 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=917013', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=917013', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/0b79459b482e85cb7426aa7da683a9f2c97aeae1', 'name': 'https://github.com/torvalds/linux/commit/0b79459b482e85cb7426aa7da683a9f2c97aeae1', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.openwall.com/lists/oss-security/2013/03/20/9', 'name': '[oss-security] 20130320 linux kernel: kvm: CVE-2013-179[6..8]', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=0b79459b482e85cb7426aa7da683a9f2c97aeae1', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=0b79459b482e85cb7426aa7da683a9f2c97aeae1', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1813-1', 'name': 'USN-1813-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1812-1', 'name': 'USN-1812-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-0744.html', 'name': 'RHSA-2013:0744', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-0727.html', 'name': 'RHSA-2013:0727', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1809-1', 'name': 'USN-1809-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-0746.html', 'name': 'RHSA-2013:0746', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2013-05/msg00018.html', 'name': 'openSUSE-SU-2013:0847', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-0928.html', 'name': 'RHSA-2013:0928', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html', 'name': 'openSUSE-SU-2013:0925', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00018.html', 'name': 'openSUSE-SU-2013:1187', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2013:176', 'name': 'MDVSA-2013:176', 'refsource': 'MANDRIVA', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-1026.html', 'name': 'RHSA-2013:1026', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-399'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.8.4', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.3:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'Use-after-free vulnerability in arch/x86/kvm/x86.c in the Linux kernel through 3.8.4 allows guest OS users to cause a denial of service (host OS memory corruption) or possibly have unspecified other impact via a crafted application that triggers use of a guest physical address (GPA) in (1) movable or (2) removable memory during an MSR_KVM_SYSTEM_TIME kvm_set_msr_common operation.'}] | 2014-01-28T04:51Z | 2013-03-22T11:59Z | Resource Management Errors | Weaknesses in this category are related to improper management of system resources. | https://cwe.mitre.org/data/definitions/399.html | 1 | Andy Honig | 2013-02-20 14:48:10-08:00 | KVM: x86: Convert MSR_KVM_SYSTEM_TIME to use gfn_to_hva_cache functions (CVE-2013-1797)
There is a potential use after free issue with the handling of
MSR_KVM_SYSTEM_TIME. If the guest specifies a GPA in a movable or removable
memory such as frame buffers then KVM might continue to write to that
address even after it's removed via KVM_SET_USER_MEMORY_REGION. KVM pins
the page in memory so it's unlikely to cause an issue, but if the user
space component re-purposes the memory previously used for the guest, then
the guest will be able to corrupt that memory.
Tested: Tested against kvmclock unit test
Signed-off-by: Andrew Honig <[email protected]>
Signed-off-by: Marcelo Tosatti <[email protected]> | 0b79459b482e85cb7426aa7da683a9f2c97aeae1 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | kvm_guest_time_update | kvm_guest_time_update( struct kvm_vcpu * v) | ['v'] | static int kvm_guest_time_update(struct kvm_vcpu *v)
{
unsigned long flags, this_tsc_khz;
struct kvm_vcpu_arch *vcpu = &v->arch;
struct kvm_arch *ka = &v->kvm->arch;
void *shared_kaddr;
s64 kernel_ns, max_kernel_ns;
u64 tsc_timestamp, host_tsc;
struct pvclock_vcpu_time_info *guest_hv_clock;
u8 pvclock_flags;
bool use_master_clock;
kernel_ns = 0;
host_tsc = 0;
/*
* If the host uses TSC clock, then passthrough TSC as stable
* to the guest.
*/
spin_lock(&ka->pvclock_gtod_sync_lock);
use_master_clock = ka->use_master_clock;
if (use_master_clock) {
host_tsc = ka->master_cycle_now;
kernel_ns = ka->master_kernel_ns;
}
spin_unlock(&ka->pvclock_gtod_sync_lock);
/* Keep irq disabled to prevent changes to the clock */
local_irq_save(flags);
this_tsc_khz = __get_cpu_var(cpu_tsc_khz);
if (unlikely(this_tsc_khz == 0)) {
local_irq_restore(flags);
kvm_make_request(KVM_REQ_CLOCK_UPDATE, v);
return 1;
}
if (!use_master_clock) {
host_tsc = native_read_tsc();
kernel_ns = get_kernel_ns();
}
tsc_timestamp = kvm_x86_ops->read_l1_tsc(v, host_tsc);
/*
* We may have to catch up the TSC to match elapsed wall clock
* time for two reasons, even if kvmclock is used.
* 1) CPU could have been running below the maximum TSC rate
* 2) Broken TSC compensation resets the base at each VCPU
* entry to avoid unknown leaps of TSC even when running
* again on the same CPU. This may cause apparent elapsed
* time to disappear, and the guest to stand still or run
* very slowly.
*/
if (vcpu->tsc_catchup) {
u64 tsc = compute_guest_tsc(v, kernel_ns);
if (tsc > tsc_timestamp) {
adjust_tsc_offset_guest(v, tsc - tsc_timestamp);
tsc_timestamp = tsc;
}
}
local_irq_restore(flags);
if (!vcpu->time_page)
return 0;
/*
* Time as measured by the TSC may go backwards when resetting the base
* tsc_timestamp. The reason for this is that the TSC resolution is
* higher than the resolution of the other clock scales. Thus, many
* possible measurments of the TSC correspond to one measurement of any
* other clock, and so a spread of values is possible. This is not a
* problem for the computation of the nanosecond clock; with TSC rates
* around 1GHZ, there can only be a few cycles which correspond to one
* nanosecond value, and any path through this code will inevitably
* take longer than that. However, with the kernel_ns value itself,
* the precision may be much lower, down to HZ granularity. If the
* first sampling of TSC against kernel_ns ends in the low part of the
* range, and the second in the high end of the range, we can get:
*
* (TSC - offset_low) * S + kns_old > (TSC - offset_high) * S + kns_new
*
* As the sampling errors potentially range in the thousands of cycles,
* it is possible such a time value has already been observed by the
* guest. To protect against this, we must compute the system time as
* observed by the guest and ensure the new system time is greater.
*/
max_kernel_ns = 0;
if (vcpu->hv_clock.tsc_timestamp) {
max_kernel_ns = vcpu->last_guest_tsc -
vcpu->hv_clock.tsc_timestamp;
max_kernel_ns = pvclock_scale_delta(max_kernel_ns,
vcpu->hv_clock.tsc_to_system_mul,
vcpu->hv_clock.tsc_shift);
max_kernel_ns += vcpu->last_kernel_ns;
}
if (unlikely(vcpu->hw_tsc_khz != this_tsc_khz)) {
kvm_get_time_scale(NSEC_PER_SEC / 1000, this_tsc_khz,
&vcpu->hv_clock.tsc_shift,
&vcpu->hv_clock.tsc_to_system_mul);
vcpu->hw_tsc_khz = this_tsc_khz;
}
/* with a master <monotonic time, tsc value> tuple,
* pvclock clock reads always increase at the (scaled) rate
* of guest TSC - no need to deal with sampling errors.
*/
if (!use_master_clock) {
if (max_kernel_ns > kernel_ns)
kernel_ns = max_kernel_ns;
}
/* With all the info we got, fill in the values */
vcpu->hv_clock.tsc_timestamp = tsc_timestamp;
vcpu->hv_clock.system_time = kernel_ns + v->kvm->arch.kvmclock_offset;
vcpu->last_kernel_ns = kernel_ns;
vcpu->last_guest_tsc = tsc_timestamp;
/*
* The interface expects us to write an even number signaling that the
* update is finished. Since the guest won't see the intermediate
* state, we just increase by 2 at the end.
*/
vcpu->hv_clock.version += 2;
shared_kaddr = kmap_atomic(vcpu->time_page);
guest_hv_clock = shared_kaddr + vcpu->time_offset;
/* retain PVCLOCK_GUEST_STOPPED if set in guest copy */
pvclock_flags = (guest_hv_clock->flags & PVCLOCK_GUEST_STOPPED);
if (vcpu->pvclock_set_guest_stopped_request) {
pvclock_flags |= PVCLOCK_GUEST_STOPPED;
vcpu->pvclock_set_guest_stopped_request = false;
}
/* If the host uses TSC clocksource, then it is stable */
if (use_master_clock)
pvclock_flags |= PVCLOCK_TSC_STABLE_BIT;
vcpu->hv_clock.flags = pvclock_flags;
memcpy(shared_kaddr + vcpu->time_offset, &vcpu->hv_clock,
sizeof(vcpu->hv_clock));
kunmap_atomic(shared_kaddr);
mark_page_dirty(v->kvm, vcpu->time >> PAGE_SHIFT);
return 0;
} | 490 | True | 1 |
||
CVE-2013-1797 | False | False | False | False | AV:A/AC:H/Au:N/C:C/I:C/A:C | ADJACENT_NETWORK | HIGH | NONE | COMPLETE | COMPLETE | COMPLETE | 6.8 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=917013', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=917013', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/0b79459b482e85cb7426aa7da683a9f2c97aeae1', 'name': 'https://github.com/torvalds/linux/commit/0b79459b482e85cb7426aa7da683a9f2c97aeae1', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.openwall.com/lists/oss-security/2013/03/20/9', 'name': '[oss-security] 20130320 linux kernel: kvm: CVE-2013-179[6..8]', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=0b79459b482e85cb7426aa7da683a9f2c97aeae1', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=0b79459b482e85cb7426aa7da683a9f2c97aeae1', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1813-1', 'name': 'USN-1813-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1812-1', 'name': 'USN-1812-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-0744.html', 'name': 'RHSA-2013:0744', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-0727.html', 'name': 'RHSA-2013:0727', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1809-1', 'name': 'USN-1809-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-0746.html', 'name': 'RHSA-2013:0746', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2013-05/msg00018.html', 'name': 'openSUSE-SU-2013:0847', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-0928.html', 'name': 'RHSA-2013:0928', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html', 'name': 'openSUSE-SU-2013:0925', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00018.html', 'name': 'openSUSE-SU-2013:1187', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2013:176', 'name': 'MDVSA-2013:176', 'refsource': 'MANDRIVA', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-1026.html', 'name': 'RHSA-2013:1026', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-399'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.8.4', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.3:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'Use-after-free vulnerability in arch/x86/kvm/x86.c in the Linux kernel through 3.8.4 allows guest OS users to cause a denial of service (host OS memory corruption) or possibly have unspecified other impact via a crafted application that triggers use of a guest physical address (GPA) in (1) movable or (2) removable memory during an MSR_KVM_SYSTEM_TIME kvm_set_msr_common operation.'}] | 2014-01-28T04:51Z | 2013-03-22T11:59Z | Resource Management Errors | Weaknesses in this category are related to improper management of system resources. | https://cwe.mitre.org/data/definitions/399.html | 1 | Andy Honig | 2013-02-20 14:48:10-08:00 | KVM: x86: Convert MSR_KVM_SYSTEM_TIME to use gfn_to_hva_cache functions (CVE-2013-1797)
There is a potential use after free issue with the handling of
MSR_KVM_SYSTEM_TIME. If the guest specifies a GPA in a movable or removable
memory such as frame buffers then KVM might continue to write to that
address even after it's removed via KVM_SET_USER_MEMORY_REGION. KVM pins
the page in memory so it's unlikely to cause an issue, but if the user
space component re-purposes the memory previously used for the guest, then
the guest will be able to corrupt that memory.
Tested: Tested against kvmclock unit test
Signed-off-by: Andrew Honig <[email protected]>
Signed-off-by: Marcelo Tosatti <[email protected]> | 0b79459b482e85cb7426aa7da683a9f2c97aeae1 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | kvm_set_guest_paused | kvm_set_guest_paused( struct kvm_vcpu * vcpu) | ['vcpu'] | static int kvm_set_guest_paused(struct kvm_vcpu *vcpu)
{
if (!vcpu->arch.time_page)
return -EINVAL;
vcpu->arch.pvclock_set_guest_stopped_request = true;
kvm_make_request(KVM_REQ_CLOCK_UPDATE, vcpu);
return 0;
} | 40 | True | 1 |
||
CVE-2013-1797 | False | False | False | False | AV:A/AC:H/Au:N/C:C/I:C/A:C | ADJACENT_NETWORK | HIGH | NONE | COMPLETE | COMPLETE | COMPLETE | 6.8 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=917013', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=917013', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/0b79459b482e85cb7426aa7da683a9f2c97aeae1', 'name': 'https://github.com/torvalds/linux/commit/0b79459b482e85cb7426aa7da683a9f2c97aeae1', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.openwall.com/lists/oss-security/2013/03/20/9', 'name': '[oss-security] 20130320 linux kernel: kvm: CVE-2013-179[6..8]', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=0b79459b482e85cb7426aa7da683a9f2c97aeae1', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=0b79459b482e85cb7426aa7da683a9f2c97aeae1', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1813-1', 'name': 'USN-1813-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1812-1', 'name': 'USN-1812-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-0744.html', 'name': 'RHSA-2013:0744', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-0727.html', 'name': 'RHSA-2013:0727', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1809-1', 'name': 'USN-1809-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-0746.html', 'name': 'RHSA-2013:0746', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2013-05/msg00018.html', 'name': 'openSUSE-SU-2013:0847', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-0928.html', 'name': 'RHSA-2013:0928', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html', 'name': 'openSUSE-SU-2013:0925', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00018.html', 'name': 'openSUSE-SU-2013:1187', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2013:176', 'name': 'MDVSA-2013:176', 'refsource': 'MANDRIVA', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-1026.html', 'name': 'RHSA-2013:1026', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-399'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.8.4', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.3:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'Use-after-free vulnerability in arch/x86/kvm/x86.c in the Linux kernel through 3.8.4 allows guest OS users to cause a denial of service (host OS memory corruption) or possibly have unspecified other impact via a crafted application that triggers use of a guest physical address (GPA) in (1) movable or (2) removable memory during an MSR_KVM_SYSTEM_TIME kvm_set_msr_common operation.'}] | 2014-01-28T04:51Z | 2013-03-22T11:59Z | Resource Management Errors | Weaknesses in this category are related to improper management of system resources. | https://cwe.mitre.org/data/definitions/399.html | 1 | Andy Honig | 2013-02-20 14:48:10-08:00 | KVM: x86: Convert MSR_KVM_SYSTEM_TIME to use gfn_to_hva_cache functions (CVE-2013-1797)
There is a potential use after free issue with the handling of
MSR_KVM_SYSTEM_TIME. If the guest specifies a GPA in a movable or removable
memory such as frame buffers then KVM might continue to write to that
address even after it's removed via KVM_SET_USER_MEMORY_REGION. KVM pins
the page in memory so it's unlikely to cause an issue, but if the user
space component re-purposes the memory previously used for the guest, then
the guest will be able to corrupt that memory.
Tested: Tested against kvmclock unit test
Signed-off-by: Andrew Honig <[email protected]>
Signed-off-by: Marcelo Tosatti <[email protected]> | 0b79459b482e85cb7426aa7da683a9f2c97aeae1 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | kvm_set_msr_common | kvm_set_msr_common( struct kvm_vcpu * vcpu , struct msr_data * msr_info) | ['vcpu', 'msr_info'] | int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
{
bool pr = false;
u32 msr = msr_info->index;
u64 data = msr_info->data;
switch (msr) {
case MSR_AMD64_NB_CFG:
case MSR_IA32_UCODE_REV:
case MSR_IA32_UCODE_WRITE:
case MSR_VM_HSAVE_PA:
case MSR_AMD64_PATCH_LOADER:
case MSR_AMD64_BU_CFG2:
break;
case MSR_EFER:
return set_efer(vcpu, data);
case MSR_K7_HWCR:
data &= ~(u64)0x40; /* ignore flush filter disable */
data &= ~(u64)0x100; /* ignore ignne emulation enable */
data &= ~(u64)0x8; /* ignore TLB cache disable */
if (data != 0) {
vcpu_unimpl(vcpu, "unimplemented HWCR wrmsr: 0x%llx\n",
data);
return 1;
}
break;
case MSR_FAM10H_MMIO_CONF_BASE:
if (data != 0) {
vcpu_unimpl(vcpu, "unimplemented MMIO_CONF_BASE wrmsr: "
"0x%llx\n", data);
return 1;
}
break;
case MSR_IA32_DEBUGCTLMSR:
if (!data) {
/* We support the non-activated case already */
break;
} else if (data & ~(DEBUGCTLMSR_LBR | DEBUGCTLMSR_BTF)) {
/* Values other than LBR and BTF are vendor-specific,
thus reserved and should throw a #GP */
return 1;
}
vcpu_unimpl(vcpu, "%s: MSR_IA32_DEBUGCTLMSR 0x%llx, nop\n",
__func__, data);
break;
case 0x200 ... 0x2ff:
return set_msr_mtrr(vcpu, msr, data);
case MSR_IA32_APICBASE:
kvm_set_apic_base(vcpu, data);
break;
case APIC_BASE_MSR ... APIC_BASE_MSR + 0x3ff:
return kvm_x2apic_msr_write(vcpu, msr, data);
case MSR_IA32_TSCDEADLINE:
kvm_set_lapic_tscdeadline_msr(vcpu, data);
break;
case MSR_IA32_TSC_ADJUST:
if (guest_cpuid_has_tsc_adjust(vcpu)) {
if (!msr_info->host_initiated) {
u64 adj = data - vcpu->arch.ia32_tsc_adjust_msr;
kvm_x86_ops->adjust_tsc_offset(vcpu, adj, true);
}
vcpu->arch.ia32_tsc_adjust_msr = data;
}
break;
case MSR_IA32_MISC_ENABLE:
vcpu->arch.ia32_misc_enable_msr = data;
break;
case MSR_KVM_WALL_CLOCK_NEW:
case MSR_KVM_WALL_CLOCK:
vcpu->kvm->arch.wall_clock = data;
kvm_write_wall_clock(vcpu->kvm, data);
break;
case MSR_KVM_SYSTEM_TIME_NEW:
case MSR_KVM_SYSTEM_TIME: {
kvmclock_reset(vcpu);
vcpu->arch.time = data;
kvm_make_request(KVM_REQ_CLOCK_UPDATE, vcpu);
/* we verify if the enable bit is set... */
if (!(data & 1))
break;
/* ...but clean it before doing the actual write */
vcpu->arch.time_offset = data & ~(PAGE_MASK | 1);
/* Check that the address is 32-byte aligned. */
if (vcpu->arch.time_offset &
(sizeof(struct pvclock_vcpu_time_info) - 1))
break;
vcpu->arch.time_page =
gfn_to_page(vcpu->kvm, data >> PAGE_SHIFT);
if (is_error_page(vcpu->arch.time_page))
vcpu->arch.time_page = NULL;
break;
}
case MSR_KVM_ASYNC_PF_EN:
if (kvm_pv_enable_async_pf(vcpu, data))
return 1;
break;
case MSR_KVM_STEAL_TIME:
if (unlikely(!sched_info_on()))
return 1;
if (data & KVM_STEAL_RESERVED_MASK)
return 1;
if (kvm_gfn_to_hva_cache_init(vcpu->kvm, &vcpu->arch.st.stime,
data & KVM_STEAL_VALID_BITS))
return 1;
vcpu->arch.st.msr_val = data;
if (!(data & KVM_MSR_ENABLED))
break;
vcpu->arch.st.last_steal = current->sched_info.run_delay;
preempt_disable();
accumulate_steal_time(vcpu);
preempt_enable();
kvm_make_request(KVM_REQ_STEAL_UPDATE, vcpu);
break;
case MSR_KVM_PV_EOI_EN:
if (kvm_lapic_enable_pv_eoi(vcpu, data))
return 1;
break;
case MSR_IA32_MCG_CTL:
case MSR_IA32_MCG_STATUS:
case MSR_IA32_MC0_CTL ... MSR_IA32_MC0_CTL + 4 * KVM_MAX_MCE_BANKS - 1:
return set_msr_mce(vcpu, msr, data);
/* Performance counters are not protected by a CPUID bit,
* so we should check all of them in the generic path for the sake of
* cross vendor migration.
* Writing a zero into the event select MSRs disables them,
* which we perfectly emulate ;-). Any other value should be at least
* reported, some guests depend on them.
*/
case MSR_K7_EVNTSEL0:
case MSR_K7_EVNTSEL1:
case MSR_K7_EVNTSEL2:
case MSR_K7_EVNTSEL3:
if (data != 0)
vcpu_unimpl(vcpu, "unimplemented perfctr wrmsr: "
"0x%x data 0x%llx\n", msr, data);
break;
/* at least RHEL 4 unconditionally writes to the perfctr registers,
* so we ignore writes to make it happy.
*/
case MSR_K7_PERFCTR0:
case MSR_K7_PERFCTR1:
case MSR_K7_PERFCTR2:
case MSR_K7_PERFCTR3:
vcpu_unimpl(vcpu, "unimplemented perfctr wrmsr: "
"0x%x data 0x%llx\n", msr, data);
break;
case MSR_P6_PERFCTR0:
case MSR_P6_PERFCTR1:
pr = true;
case MSR_P6_EVNTSEL0:
case MSR_P6_EVNTSEL1:
if (kvm_pmu_msr(vcpu, msr))
return kvm_pmu_set_msr(vcpu, msr, data);
if (pr || data != 0)
vcpu_unimpl(vcpu, "disabled perfctr wrmsr: "
"0x%x data 0x%llx\n", msr, data);
break;
case MSR_K7_CLK_CTL:
/*
* Ignore all writes to this no longer documented MSR.
* Writes are only relevant for old K7 processors,
* all pre-dating SVM, but a recommended workaround from
* AMD for these chips. It is possible to specify the
* affected processor models on the command line, hence
* the need to ignore the workaround.
*/
break;
case HV_X64_MSR_GUEST_OS_ID ... HV_X64_MSR_SINT15:
if (kvm_hv_msr_partition_wide(msr)) {
int r;
mutex_lock(&vcpu->kvm->lock);
r = set_msr_hyperv_pw(vcpu, msr, data);
mutex_unlock(&vcpu->kvm->lock);
return r;
} else
return set_msr_hyperv(vcpu, msr, data);
break;
case MSR_IA32_BBL_CR_CTL3:
/* Drop writes to this legacy MSR -- see rdmsr
* counterpart for further detail.
*/
vcpu_unimpl(vcpu, "ignored wrmsr: 0x%x data %llx\n", msr, data);
break;
case MSR_AMD64_OSVW_ID_LENGTH:
if (!guest_cpuid_has_osvw(vcpu))
return 1;
vcpu->arch.osvw.length = data;
break;
case MSR_AMD64_OSVW_STATUS:
if (!guest_cpuid_has_osvw(vcpu))
return 1;
vcpu->arch.osvw.status = data;
break;
default:
if (msr && (msr == vcpu->kvm->arch.xen_hvm_config.msr))
return xen_hvm_config(vcpu, data);
if (kvm_pmu_msr(vcpu, msr))
return kvm_pmu_set_msr(vcpu, msr, data);
if (!ignore_msrs) {
vcpu_unimpl(vcpu, "unhandled wrmsr: 0x%x data %llx\n",
msr, data);
return 1;
} else {
vcpu_unimpl(vcpu, "ignored wrmsr: 0x%x data %llx\n",
msr, data);
break;
}
}
return 0;
} | 951 | True | 1 |
||
CVE-2013-1797 | False | False | False | False | AV:A/AC:H/Au:N/C:C/I:C/A:C | ADJACENT_NETWORK | HIGH | NONE | COMPLETE | COMPLETE | COMPLETE | 6.8 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=917013', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=917013', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/0b79459b482e85cb7426aa7da683a9f2c97aeae1', 'name': 'https://github.com/torvalds/linux/commit/0b79459b482e85cb7426aa7da683a9f2c97aeae1', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.openwall.com/lists/oss-security/2013/03/20/9', 'name': '[oss-security] 20130320 linux kernel: kvm: CVE-2013-179[6..8]', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=0b79459b482e85cb7426aa7da683a9f2c97aeae1', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=0b79459b482e85cb7426aa7da683a9f2c97aeae1', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1813-1', 'name': 'USN-1813-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1812-1', 'name': 'USN-1812-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-0744.html', 'name': 'RHSA-2013:0744', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-0727.html', 'name': 'RHSA-2013:0727', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1809-1', 'name': 'USN-1809-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-0746.html', 'name': 'RHSA-2013:0746', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2013-05/msg00018.html', 'name': 'openSUSE-SU-2013:0847', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-0928.html', 'name': 'RHSA-2013:0928', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html', 'name': 'openSUSE-SU-2013:0925', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00018.html', 'name': 'openSUSE-SU-2013:1187', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2013:176', 'name': 'MDVSA-2013:176', 'refsource': 'MANDRIVA', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-1026.html', 'name': 'RHSA-2013:1026', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-399'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.8.4', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.3:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'Use-after-free vulnerability in arch/x86/kvm/x86.c in the Linux kernel through 3.8.4 allows guest OS users to cause a denial of service (host OS memory corruption) or possibly have unspecified other impact via a crafted application that triggers use of a guest physical address (GPA) in (1) movable or (2) removable memory during an MSR_KVM_SYSTEM_TIME kvm_set_msr_common operation.'}] | 2014-01-28T04:51Z | 2013-03-22T11:59Z | Resource Management Errors | Weaknesses in this category are related to improper management of system resources. | https://cwe.mitre.org/data/definitions/399.html | 1 | Andy Honig | 2013-02-20 14:48:10-08:00 | KVM: x86: Convert MSR_KVM_SYSTEM_TIME to use gfn_to_hva_cache functions (CVE-2013-1797)
There is a potential use after free issue with the handling of
MSR_KVM_SYSTEM_TIME. If the guest specifies a GPA in a movable or removable
memory such as frame buffers then KVM might continue to write to that
address even after it's removed via KVM_SET_USER_MEMORY_REGION. KVM pins
the page in memory so it's unlikely to cause an issue, but if the user
space component re-purposes the memory previously used for the guest, then
the guest will be able to corrupt that memory.
Tested: Tested against kvmclock unit test
Signed-off-by: Andrew Honig <[email protected]>
Signed-off-by: Marcelo Tosatti <[email protected]> | 0b79459b482e85cb7426aa7da683a9f2c97aeae1 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | kvmclock_reset | kvmclock_reset( struct kvm_vcpu * vcpu) | ['vcpu'] | static void kvmclock_reset(struct kvm_vcpu *vcpu)
{
if (vcpu->arch.time_page) {
kvm_release_page_dirty(vcpu->arch.time_page);
vcpu->arch.time_page = NULL;
}
} | 36 | True | 1 |
||
CVE-2013-1798 | False | False | False | False | AV:A/AC:H/Au:N/C:C/I:N/A:C | ADJACENT_NETWORK | HIGH | NONE | COMPLETE | NONE | COMPLETE | 6.2 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://www.openwall.com/lists/oss-security/2013/03/20/9', 'name': '[oss-security] 20130320 linux kernel: kvm: CVE-2013-179[6..8]', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=a2c118bfab8bc6b8bb213abfc35201e441693d55', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=a2c118bfab8bc6b8bb213abfc35201e441693d55', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Patch']}, {'url': 'https://github.com/torvalds/linux/commit/a2c118bfab8bc6b8bb213abfc35201e441693d55', 'name': 'https://github.com/torvalds/linux/commit/a2c118bfab8bc6b8bb213abfc35201e441693d55', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Patch']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=917017', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=917017', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1813-1', 'name': 'USN-1813-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1812-1', 'name': 'USN-1812-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-0744.html', 'name': 'RHSA-2013:0744', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-0727.html', 'name': 'RHSA-2013:0727', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1809-1', 'name': 'USN-1809-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-0746.html', 'name': 'RHSA-2013:0746', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2013-05/msg00018.html', 'name': 'openSUSE-SU-2013:0847', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-0928.html', 'name': 'RHSA-2013:0928', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html', 'name': 'openSUSE-SU-2013:0925', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00018.html', 'name': 'openSUSE-SU-2013:1187', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2013:176', 'name': 'MDVSA-2013:176', 'refsource': 'MANDRIVA', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-1026.html', 'name': 'RHSA-2013:1026', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://packetstormsecurity.com/files/157233/Kernel-Live-Patch-Security-Notice-LSN-0065-1.html', 'name': 'http://packetstormsecurity.com/files/157233/Kernel-Live-Patch-Security-Notice-LSN-0065-1.html', 'refsource': 'MISC', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-20'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.8.4', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.3:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The ioapic_read_indirect function in virt/kvm/ioapic.c in the Linux kernel through 3.8.4 does not properly handle a certain combination of invalid IOAPIC_REG_SELECT and IOAPIC_REG_WINDOW operations, which allows guest OS users to obtain sensitive information from host OS memory or cause a denial of service (host OS OOPS) via a crafted application.'}] | 2014-01-28T04:51Z | 2013-03-22T11:59Z | Improper Input Validation | The product receives input or data, but it does
not validate or incorrectly validates that the input has the
properties that are required to process the data safely and
correctly. |
Input validation is a frequently-used technique
for checking potentially dangerous inputs in order to
ensure that the inputs are safe for processing within the
code, or when communicating with other components. When
software does not validate input properly, an attacker is
able to craft the input in a form that is not expected by
the rest of the application. This will lead to parts of the
system receiving unintended input, which may result in
altered control flow, arbitrary control of a resource, or
arbitrary code execution.
Input validation is not the only technique for
processing input, however. Other techniques attempt to
transform potentially-dangerous input into something safe, such
as filtering (CWE-790) - which attempts to remove dangerous
inputs - or encoding/escaping (CWE-116), which attempts to
ensure that the input is not misinterpreted when it is included
in output to another component. Other techniques exist as well
(see CWE-138 for more examples.)
Input validation can be applied to:
raw data - strings, numbers, parameters, file contents, etc.
metadata - information about the raw data, such as headers or size
Data can be simple or structured. Structured data
can be composed of many nested layers, composed of
combinations of metadata and raw data, with other simple or
structured data.
Many properties of raw data or metadata may need
to be validated upon entry into the code, such
as:
specified quantities such as size, length, frequency, price, rate, number of operations, time, etc.
implied or derived quantities, such as the actual size of a file instead of a specified size
indexes, offsets, or positions into more complex data structures
symbolic keys or other elements into hash tables, associative arrays, etc.
well-formedness, i.e. syntactic correctness - compliance with expected syntax
lexical token correctness - compliance with rules for what is treated as a token
specified or derived type - the actual type of the input (or what the input appears to be)
consistency - between individual data elements, between raw data and metadata, between references, etc.
conformance to domain-specific rules, e.g. business logic
equivalence - ensuring that equivalent inputs are treated the same
authenticity, ownership, or other attestations about the input, e.g. a cryptographic signature to prove the source of the data
Implied or derived properties of data must often
be calculated or inferred by the code itself. Errors in
deriving properties may be considered a contributing factor
to improper input validation.
Note that "input validation" has very different
meanings to different people, or within different
classification schemes. Caution must be used when
referencing this CWE entry or mapping to it. For example,
some weaknesses might involve inadvertently giving control
to an attacker over an input when they should not be able
to provide an input at all, but sometimes this is referred
to as input validation.
Finally, it is important to emphasize that the
distinctions between input validation and output escaping
are often blurred, and developers must be careful to
understand the difference, including how input validation
is not always sufficient to prevent vulnerabilities,
especially when less stringent data types must be
supported, such as free-form text. Consider a SQL injection
scenario in which a person's last name is inserted into a
query. The name "O'Reilly" would likely pass the validation
step since it is a common last name in the English
language. However, this valid name cannot be directly
inserted into the database because it contains the "'"
apostrophe character, which would need to be escaped or
otherwise transformed. In this case, removing the
apostrophe might reduce the risk of SQL injection, but it
would produce incorrect behavior because the wrong name
would be recorded.
| https://cwe.mitre.org/data/definitions/20.html | 0 | Andy Honig | 2013-02-20 14:49:16-08:00 | KVM: Fix bounds checking in ioapic indirect register reads (CVE-2013-1798)
If the guest specifies a IOAPIC_REG_SELECT with an invalid value and follows
that with a read of the IOAPIC_REG_WINDOW KVM does not properly validate
that request. ioapic_read_indirect contains an
ASSERT(redir_index < IOAPIC_NUM_PINS), but the ASSERT has no effect in
non-debug builds. In recent kernels this allows a guest to cause a kernel
oops by reading invalid memory. In older kernels (pre-3.3) this allows a
guest to read from large ranges of host memory.
Tested: tested against apic unit tests.
Signed-off-by: Andrew Honig <[email protected]>
Signed-off-by: Marcelo Tosatti <[email protected]> | a2c118bfab8bc6b8bb213abfc35201e441693d55 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | ioapic_read_indirect | ioapic_read_indirect( struct kvm_ioapic * ioapic , unsigned long addr , unsigned long length) | ['ioapic', 'addr', 'length'] | static unsigned long ioapic_read_indirect(struct kvm_ioapic *ioapic,
unsigned long addr,
unsigned long length)
{
unsigned long result = 0;
switch (ioapic->ioregsel) {
case IOAPIC_REG_VERSION:
result = ((((IOAPIC_NUM_PINS - 1) & 0xff) << 16)
| (IOAPIC_VERSION_ID & 0xff));
break;
case IOAPIC_REG_APIC_ID:
case IOAPIC_REG_ARB_ID:
result = ((ioapic->id & 0xf) << 24);
break;
default:
{
u32 redir_index = (ioapic->ioregsel - 0x10) >> 1;
u64 redir_content;
ASSERT(redir_index < IOAPIC_NUM_PINS);
redir_content = ioapic->redirtbl[redir_index].bits;
result = (ioapic->ioregsel & 0x1) ?
(redir_content >> 32) & 0xffffffff :
redir_content & 0xffffffff;
break;
}
}
return result;
} | 151 | True | 1 |
|
CVE-2013-1957 | False | False | False | False | AV:L/AC:M/Au:N/C:C/I:N/A:N | LOCAL | MEDIUM | NONE | COMPLETE | NONE | NONE | 4.7 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'https://github.com/torvalds/linux/commit/132c94e31b8bca8ea921f9f96a57d684fa4ae0a9', 'name': 'https://github.com/torvalds/linux/commit/132c94e31b8bca8ea921f9f96a57d684fa4ae0a9', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.openwall.com/lists/oss-security/2013/04/16/11', 'name': '[oss-security] 20130416 Re: Re: Summary of security bugs (now fixed) in user namespaces', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.6', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.6', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=132c94e31b8bca8ea921f9f96a57d684fa4ae0a9', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=132c94e31b8bca8ea921f9f96a57d684fa4ae0a9', 'refsource': 'CONFIRM', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.8.5', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.4:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The clone_mnt function in fs/namespace.c in the Linux kernel before 3.8.6 does not properly restrict changes to the MNT_READONLY flag, which allows local users to bypass an intended read-only property of a filesystem by leveraging a separate mount namespace.'}] | 2013-04-25T13:17Z | 2013-04-24T19:55Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Eric W. Biederman | 2013-03-22 04:08:05-07:00 | vfs: Carefully propogate mounts across user namespaces
As a matter of policy MNT_READONLY should not be changable if the
original mounter had more privileges than creator of the mount
namespace.
Add the flag CL_UNPRIVILEGED to note when we are copying a mount from
a mount namespace that requires more privileges to a mount namespace
that requires fewer privileges.
When the CL_UNPRIVILEGED flag is set cause clone_mnt to set MNT_NO_REMOUNT
if any of the mnt flags that should never be changed are set.
This protects both mount propagation and the initial creation of a less
privileged mount namespace.
Cc: [email protected]
Acked-by: Serge Hallyn <[email protected]>
Reported-by: Andy Lutomirski <[email protected]>
Signed-off-by: "Eric W. Biederman" <[email protected]> | 132c94e31b8bca8ea921f9f96a57d684fa4ae0a9 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | dup_mnt_ns | dup_mnt_ns( struct mnt_namespace * mnt_ns , struct user_namespace * user_ns , struct fs_struct * fs) | ['mnt_ns', 'user_ns', 'fs'] | static struct mnt_namespace *dup_mnt_ns(struct mnt_namespace *mnt_ns,
struct user_namespace *user_ns, struct fs_struct *fs)
{
struct mnt_namespace *new_ns;
struct vfsmount *rootmnt = NULL, *pwdmnt = NULL;
struct mount *p, *q;
struct mount *old = mnt_ns->root;
struct mount *new;
int copy_flags;
new_ns = alloc_mnt_ns(user_ns);
if (IS_ERR(new_ns))
return new_ns;
down_write(&namespace_sem);
/* First pass: copy the tree topology */
copy_flags = CL_COPY_ALL | CL_EXPIRE;
if (user_ns != mnt_ns->user_ns)
copy_flags |= CL_SHARED_TO_SLAVE;
new = copy_tree(old, old->mnt.mnt_root, copy_flags);
if (IS_ERR(new)) {
up_write(&namespace_sem);
free_mnt_ns(new_ns);
return ERR_CAST(new);
}
new_ns->root = new;
br_write_lock(&vfsmount_lock);
list_add_tail(&new_ns->list, &new->mnt_list);
br_write_unlock(&vfsmount_lock);
/*
* Second pass: switch the tsk->fs->* elements and mark new vfsmounts
* as belonging to new namespace. We have already acquired a private
* fs_struct, so tsk->fs->lock is not needed.
*/
p = old;
q = new;
while (p) {
q->mnt_ns = new_ns;
if (fs) {
if (&p->mnt == fs->root.mnt) {
fs->root.mnt = mntget(&q->mnt);
rootmnt = &p->mnt;
}
if (&p->mnt == fs->pwd.mnt) {
fs->pwd.mnt = mntget(&q->mnt);
pwdmnt = &p->mnt;
}
}
p = next_mnt(p, old);
q = next_mnt(q, new);
}
up_write(&namespace_sem);
if (rootmnt)
mntput(rootmnt);
if (pwdmnt)
mntput(pwdmnt);
return new_ns;
} | 317 | True | 1 |
||
CVE-2013-1929 | False | False | False | False | AV:L/AC:M/Au:N/C:P/I:P/A:P | LOCAL | MEDIUM | NONE | PARTIAL | PARTIAL | PARTIAL | 4.4 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://www.openwall.com/lists/oss-security/2013/04/06/3', 'name': '[oss-security] 20130405 Re: CVE Request: tg3 VPD firmware -> driver injection', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://cansecwest.com/slides/2013/PrivateCore%20CSW%202013.pdf', 'name': 'http://cansecwest.com/slides/2013/PrivateCore%20CSW%202013.pdf', 'refsource': 'MISC', 'tags': ['Exploit']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=949932', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=949932', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.6', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.6', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/715230a44310a8cf66fbfb5a46f9a62a9b2de424', 'name': 'https://github.com/torvalds/linux/commit/715230a44310a8cf66fbfb5a46f9a62a9b2de424', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Patch']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=715230a44310a8cf66fbfb5a46f9a62a9b2de424', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=715230a44310a8cf66fbfb5a46f9a62a9b2de424', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Patch']}, {'url': 'http://www.ubuntu.com/usn/USN-1836-1', 'name': 'USN-1836-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1834-1', 'name': 'USN-1834-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1838-1', 'name': 'USN-1838-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1835-1', 'name': 'USN-1835-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2013:176', 'name': 'MDVSA-2013:176', 'refsource': 'MANDRIVA', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2013-09/msg00003.html', 'name': 'SUSE-SU-2013:1473', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2013-09/msg00004.html', 'name': 'SUSE-SU-2013:1474', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.fedoraproject.org/pipermail/package-announce/2013-April/101836.html', 'name': 'FEDORA-2013-5368', 'refsource': 'FEDORA', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-updates/2013-12/msg00129.html', 'name': 'openSUSE-SU-2013:1971', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-1645.html', 'name': 'RHSA-2013:1645', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-119'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.8.5', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.4:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'Heap-based buffer overflow in the tg3_read_vpd function in drivers/net/ethernet/broadcom/tg3.c in the Linux kernel before 3.8.6 allows physically proximate attackers to cause a denial of service (system crash) or possibly execute arbitrary code via crafted firmware that specifies a long string in the Vital Product Data (VPD) data structure.'}] | 2014-01-04T04:46Z | 2013-06-07T14:03Z | Improper Restriction of Operations within the Bounds of a Memory Buffer | The software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. |
Certain languages allow direct addressing of memory locations and do not automatically ensure that these locations are valid for the memory buffer that is being referenced. This can cause read or write operations to be performed on memory locations that may be associated with other variables, data structures, or internal program data.
As a result, an attacker may be able to execute arbitrary code, alter the intended control flow, read sensitive information, or cause the system to crash.
| https://cwe.mitre.org/data/definitions/119.html | 0 | Kees Cook | 2013-03-27 06:40:50+00:00 | tg3: fix length overflow in VPD firmware parsing
Commit 184b89044fb6e2a74611dafa69b1dce0d98612c6 ("tg3: Use VPD fw version
when present") introduced VPD parsing that contained a potential length
overflow.
Limit the hardware's reported firmware string length (max 255 bytes) to
stay inside the driver's firmware string length (32 bytes). On overflow,
truncate the formatted firmware string instead of potentially overwriting
portions of the tg3 struct.
http://cansecwest.com/slides/2013/PrivateCore%20CSW%202013.pdf
Signed-off-by: Kees Cook <[email protected]>
Reported-by: Oded Horovitz <[email protected]>
Reported-by: Brad Spengler <[email protected]>
Cc: [email protected]
Cc: Matt Carlson <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 715230a44310a8cf66fbfb5a46f9a62a9b2de424 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | tg3_read_vpd | tg3_read_vpd( struct tg3 * tp) | ['tp'] | static void tg3_read_vpd(struct tg3 *tp)
{
u8 *vpd_data;
unsigned int block_end, rosize, len;
u32 vpdlen;
int j, i = 0;
vpd_data = (u8 *)tg3_vpd_readblock(tp, &vpdlen);
if (!vpd_data)
goto out_no_vpd;
i = pci_vpd_find_tag(vpd_data, 0, vpdlen, PCI_VPD_LRDT_RO_DATA);
if (i < 0)
goto out_not_found;
rosize = pci_vpd_lrdt_size(&vpd_data[i]);
block_end = i + PCI_VPD_LRDT_TAG_SIZE + rosize;
i += PCI_VPD_LRDT_TAG_SIZE;
if (block_end > vpdlen)
goto out_not_found;
j = pci_vpd_find_info_keyword(vpd_data, i, rosize,
PCI_VPD_RO_KEYWORD_MFR_ID);
if (j > 0) {
len = pci_vpd_info_field_size(&vpd_data[j]);
j += PCI_VPD_INFO_FLD_HDR_SIZE;
if (j + len > block_end || len != 4 ||
memcmp(&vpd_data[j], "1028", 4))
goto partno;
j = pci_vpd_find_info_keyword(vpd_data, i, rosize,
PCI_VPD_RO_KEYWORD_VENDOR0);
if (j < 0)
goto partno;
len = pci_vpd_info_field_size(&vpd_data[j]);
j += PCI_VPD_INFO_FLD_HDR_SIZE;
if (j + len > block_end)
goto partno;
memcpy(tp->fw_ver, &vpd_data[j], len);
strncat(tp->fw_ver, " bc ", vpdlen - len - 1);
}
partno:
i = pci_vpd_find_info_keyword(vpd_data, i, rosize,
PCI_VPD_RO_KEYWORD_PARTNO);
if (i < 0)
goto out_not_found;
len = pci_vpd_info_field_size(&vpd_data[i]);
i += PCI_VPD_INFO_FLD_HDR_SIZE;
if (len > TG3_BPN_SIZE ||
(len + i) > vpdlen)
goto out_not_found;
memcpy(tp->board_part_number, &vpd_data[i], len);
out_not_found:
kfree(vpd_data);
if (tp->board_part_number[0])
return;
out_no_vpd:
if (tg3_asic_rev(tp) == ASIC_REV_5717) {
if (tp->pdev->device == TG3PCI_DEVICE_TIGON3_5717 ||
tp->pdev->device == TG3PCI_DEVICE_TIGON3_5717_C)
strcpy(tp->board_part_number, "BCM5717");
else if (tp->pdev->device == TG3PCI_DEVICE_TIGON3_5718)
strcpy(tp->board_part_number, "BCM5718");
else
goto nomatch;
} else if (tg3_asic_rev(tp) == ASIC_REV_57780) {
if (tp->pdev->device == TG3PCI_DEVICE_TIGON3_57780)
strcpy(tp->board_part_number, "BCM57780");
else if (tp->pdev->device == TG3PCI_DEVICE_TIGON3_57760)
strcpy(tp->board_part_number, "BCM57760");
else if (tp->pdev->device == TG3PCI_DEVICE_TIGON3_57790)
strcpy(tp->board_part_number, "BCM57790");
else if (tp->pdev->device == TG3PCI_DEVICE_TIGON3_57788)
strcpy(tp->board_part_number, "BCM57788");
else
goto nomatch;
} else if (tg3_asic_rev(tp) == ASIC_REV_57765) {
if (tp->pdev->device == TG3PCI_DEVICE_TIGON3_57761)
strcpy(tp->board_part_number, "BCM57761");
else if (tp->pdev->device == TG3PCI_DEVICE_TIGON3_57765)
strcpy(tp->board_part_number, "BCM57765");
else if (tp->pdev->device == TG3PCI_DEVICE_TIGON3_57781)
strcpy(tp->board_part_number, "BCM57781");
else if (tp->pdev->device == TG3PCI_DEVICE_TIGON3_57785)
strcpy(tp->board_part_number, "BCM57785");
else if (tp->pdev->device == TG3PCI_DEVICE_TIGON3_57791)
strcpy(tp->board_part_number, "BCM57791");
else if (tp->pdev->device == TG3PCI_DEVICE_TIGON3_57795)
strcpy(tp->board_part_number, "BCM57795");
else
goto nomatch;
} else if (tg3_asic_rev(tp) == ASIC_REV_57766) {
if (tp->pdev->device == TG3PCI_DEVICE_TIGON3_57762)
strcpy(tp->board_part_number, "BCM57762");
else if (tp->pdev->device == TG3PCI_DEVICE_TIGON3_57766)
strcpy(tp->board_part_number, "BCM57766");
else if (tp->pdev->device == TG3PCI_DEVICE_TIGON3_57782)
strcpy(tp->board_part_number, "BCM57782");
else if (tp->pdev->device == TG3PCI_DEVICE_TIGON3_57786)
strcpy(tp->board_part_number, "BCM57786");
else
goto nomatch;
} else if (tg3_asic_rev(tp) == ASIC_REV_5906) {
strcpy(tp->board_part_number, "BCM95906");
} else {
nomatch:
strcpy(tp->board_part_number, "none");
}
} | 762 | True | 1 |
|
CVE-2013-3224 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:N/A:N | LOCAL | LOW | NONE | COMPLETE | NONE | NONE | 4.9 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=4683f42fde3977bdb4e8a09622788cc8b5313778', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=4683f42fde3977bdb4e8a09622788cc8b5313778', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2013/04/14/3', 'name': '[oss-security] 20130414 Linux kernel: more net info leak fixes for v3.9', 'refsource': 'MLIST', 'tags': []}, {'url': 'https://lkml.org/lkml/2013/4/14/107', 'name': '[linux-kernel] 20130414 Linux 3.9-rc7', 'refsource': 'MLIST', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/4683f42fde3977bdb4e8a09622788cc8b5313778', 'name': 'https://github.com/torvalds/linux/commit/4683f42fde3977bdb4e8a09622788cc8b5313778', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1837-1', 'name': 'USN-1837-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2013:176', 'name': 'MDVSA-2013:176', 'refsource': 'MANDRIVA', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00018.html', 'name': 'openSUSE-SU-2013:1187', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.fedoraproject.org/pipermail/package-announce/2013-April/103750.html', 'name': 'FEDORA-2013-6537', 'refsource': 'FEDORA', 'tags': []}, {'url': 'http://lists.fedoraproject.org/pipermail/package-announce/2013-May/104480.html', 'name': 'FEDORA-2013-6999', 'refsource': 'FEDORA', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-updates/2013-12/msg00129.html', 'name': 'openSUSE-SU-2013:1971', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-1051.html', 'name': 'RHSA-2013:1051', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00016.html', 'name': 'SUSE-SU-2013:1182', 'refsource': 'SUSE', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-200'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:rc6:*:*:*:*:*:*', 'versionEndIncluding': '3.9', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.9:rc4:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.9:rc5:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.9:rc3:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.9:rc2:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.9:rc1:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The bt_sock_recvmsg function in net/bluetooth/af_bluetooth.c in the Linux kernel before 3.9-rc7 does not properly initialize a certain length variable, which allows local users to obtain sensitive information from kernel stack memory via a crafted recvmsg or recvfrom system call.'}] | 2017-11-29T02:29Z | 2013-04-22T11:41Z | Exposure of Sensitive Information to an Unauthorized Actor | The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. |
There are many different kinds of mistakes that introduce information exposures. The severity of the error can range widely, depending on the context in which the product operates, the type of sensitive information that is revealed, and the benefits it may provide to an attacker. Some kinds of sensitive information include:
private, personal information, such as personal messages, financial data, health records, geographic location, or contact details
system status and environment, such as the operating system and installed packages
business secrets and intellectual property
network status and configuration
the product's own code or internal state
metadata, e.g. logging of connections or message headers
indirect information, such as a discrepancy between two internal operations that can be observed by an outsider
Information might be sensitive to different parties, each of which may have their own expectations for whether the information should be protected. These parties include:
the product's own users
people or organizations whose information is created or used by the product, even if they are not direct product users
the product's administrators, including the admins of the system(s) and/or networks on which the product operates
the developer
Information exposures can occur in different ways:
the code explicitly inserts sensitive information into resources or messages that are intentionally made accessible to unauthorized actors, but should not contain the information - i.e., the information should have been "scrubbed" or "sanitized"
a different weakness or mistake indirectly inserts the sensitive information into resources, such as a web script error revealing the full system path of the program.
the code manages resources that intentionally contain sensitive information, but the resources are unintentionally made accessible to unauthorized actors. In this case, the information exposure is resultant - i.e., a different weakness enabled the access to the information in the first place.
It is common practice to describe any loss of confidentiality as an "information exposure," but this can lead to overuse of CWE-200 in CWE mapping. From the CWE perspective, loss of confidentiality is a technical impact that can arise from dozens of different weaknesses, such as insecure file permissions or out-of-bounds read. CWE-200 and its lower-level descendants are intended to cover the mistakes that occur in behaviors that explicitly manage, store, transfer, or cleanse sensitive information.
| https://cwe.mitre.org/data/definitions/200.html | 0 | Mathias Krause | 2013-04-07 01:51:49+00:00 | Bluetooth: fix possible info leak in bt_sock_recvmsg()
In case the socket is already shutting down, bt_sock_recvmsg() returns
with 0 without updating msg_namelen leading to net/socket.c leaking the
local, uninitialized sockaddr_storage variable to userland -- 128 bytes
of kernel stack memory.
Fix this by moving the msg_namelen assignment in front of the shutdown
test.
Cc: Marcel Holtmann <[email protected]>
Cc: Gustavo Padovan <[email protected]>
Cc: Johan Hedberg <[email protected]>
Signed-off-by: Mathias Krause <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 4683f42fde3977bdb4e8a09622788cc8b5313778 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | bt_sock_recvmsg | bt_sock_recvmsg( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t len , int flags) | ['iocb', 'sock', 'msg', 'len', 'flags'] | int bt_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
struct msghdr *msg, size_t len, int flags)
{
int noblock = flags & MSG_DONTWAIT;
struct sock *sk = sock->sk;
struct sk_buff *skb;
size_t copied;
int err;
BT_DBG("sock %p sk %p len %zu", sock, sk, len);
if (flags & (MSG_OOB))
return -EOPNOTSUPP;
skb = skb_recv_datagram(sk, flags, noblock, &err);
if (!skb) {
if (sk->sk_shutdown & RCV_SHUTDOWN)
return 0;
return err;
}
msg->msg_namelen = 0;
copied = skb->len;
if (len < copied) {
msg->msg_flags |= MSG_TRUNC;
copied = len;
}
skb_reset_transport_header(skb);
err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
if (err == 0)
sock_recv_ts_and_drops(msg, sk, skb);
skb_free_datagram(sk, skb);
return err ? : copied;
} | 188 | True | 1 |
|
CVE-2013-3236 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:N/A:N | LOCAL | LOW | NONE | COMPLETE | NONE | NONE | 4.9 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'https://github.com/torvalds/linux/commit/680d04e0ba7e926233e3b9cee59125ce181f66ba', 'name': 'https://github.com/torvalds/linux/commit/680d04e0ba7e926233e3b9cee59125ce181f66ba', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2013/04/14/3', 'name': '[oss-security] 20130414 Linux kernel: more net info leak fixes for v3.9', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=680d04e0ba7e926233e3b9cee59125ce181f66ba', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=680d04e0ba7e926233e3b9cee59125ce181f66ba', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'https://lkml.org/lkml/2013/4/14/107', 'name': '[linux-kernel] 20130414 Linux 3.9-rc7', 'refsource': 'MLIST', 'tags': ['Vendor Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2013/04/22/13', 'name': '[oss-security] 20130422 Re: Re: Linux kernel: more net info leak fixes for v3.9', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://www.openwall.com/lists/oss-security/2013/04/23/2', 'name': '[oss-security] 20130423 Re: Re: Linux kernel: more net info leak fixes for v3.9', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://www.openwall.com/lists/oss-security/2013/04/22/3', 'name': '[oss-security] 20130422 Re: Linux kernel: more net info leak fixes for v3.9', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://xforce.iss.net/xforce/xfdb/83698', 'name': 'linux-cve20133236-info-disc(83698)', 'refsource': 'XF', 'tags': []}, {'url': 'http://www.openwall.com/lists/oss-security/2013/04/22/11', 'name': '[oss-security] 20130422 Re: Re: Linux kernel: more net info leak fixes for v3.9', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://www.securityfocus.com/bid/59391', 'name': '59391', 'refsource': 'BID', 'tags': []}, {'url': 'http://www.openwall.com/lists/oss-security/2013/04/22/14', 'name': '[oss-security] 20130422 Re: Re: Linux kernel: more net info leak fixes for v3.9', 'refsource': 'MLIST', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-200'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:rc6:*:*:*:*:*:*', 'versionEndIncluding': '3.9', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.9:rc4:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.9:rc5:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.9:rc3:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.9:rc2:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.9:rc1:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The vmci_transport_dgram_dequeue function in net/vmw_vsock/vmci_transport.c in the Linux kernel before 3.9-rc7 does not properly initialize a certain length variable, which allows local users to obtain sensitive information from kernel stack memory via a crafted recvmsg or recvfrom system call.'}] | 2021-08-09T15:15Z | 2013-04-22T11:41Z | Exposure of Sensitive Information to an Unauthorized Actor | The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. |
There are many different kinds of mistakes that introduce information exposures. The severity of the error can range widely, depending on the context in which the product operates, the type of sensitive information that is revealed, and the benefits it may provide to an attacker. Some kinds of sensitive information include:
private, personal information, such as personal messages, financial data, health records, geographic location, or contact details
system status and environment, such as the operating system and installed packages
business secrets and intellectual property
network status and configuration
the product's own code or internal state
metadata, e.g. logging of connections or message headers
indirect information, such as a discrepancy between two internal operations that can be observed by an outsider
Information might be sensitive to different parties, each of which may have their own expectations for whether the information should be protected. These parties include:
the product's own users
people or organizations whose information is created or used by the product, even if they are not direct product users
the product's administrators, including the admins of the system(s) and/or networks on which the product operates
the developer
Information exposures can occur in different ways:
the code explicitly inserts sensitive information into resources or messages that are intentionally made accessible to unauthorized actors, but should not contain the information - i.e., the information should have been "scrubbed" or "sanitized"
a different weakness or mistake indirectly inserts the sensitive information into resources, such as a web script error revealing the full system path of the program.
the code manages resources that intentionally contain sensitive information, but the resources are unintentionally made accessible to unauthorized actors. In this case, the information exposure is resultant - i.e., a different weakness enabled the access to the information in the first place.
It is common practice to describe any loss of confidentiality as an "information exposure," but this can lead to overuse of CWE-200 in CWE mapping. From the CWE perspective, loss of confidentiality is a technical impact that can arise from dozens of different weaknesses, such as insecure file permissions or out-of-bounds read. CWE-200 and its lower-level descendants are intended to cover the mistakes that occur in behaviors that explicitly manage, store, transfer, or cleanse sensitive information.
| https://cwe.mitre.org/data/definitions/200.html | 0 | Mathias Krause | 2013-04-07 01:52:01+00:00 | VSOCK: vmci - fix possible info leak in vmci_transport_dgram_dequeue()
In case we received no data on the call to skb_recv_datagram(), i.e.
skb->data is NULL, vmci_transport_dgram_dequeue() will return with 0
without updating msg_namelen leading to net/socket.c leaking the local,
uninitialized sockaddr_storage variable to userland -- 128 bytes of
kernel stack memory.
Fix this by moving the already existing msg_namelen assignment a few
lines above.
Cc: Andy King <[email protected]>
Cc: Dmitry Torokhov <[email protected]>
Cc: George Zhang <[email protected]>
Signed-off-by: Mathias Krause <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 680d04e0ba7e926233e3b9cee59125ce181f66ba | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | vmci_transport_dgram_dequeue | vmci_transport_dgram_dequeue( struct kiocb * kiocb , struct vsock_sock * vsk , struct msghdr * msg , size_t len , int flags) | ['kiocb', 'vsk', 'msg', 'len', 'flags'] | static int vmci_transport_dgram_dequeue(struct kiocb *kiocb,
struct vsock_sock *vsk,
struct msghdr *msg, size_t len,
int flags)
{
int err;
int noblock;
struct vmci_datagram *dg;
size_t payload_len;
struct sk_buff *skb;
noblock = flags & MSG_DONTWAIT;
if (flags & MSG_OOB || flags & MSG_ERRQUEUE)
return -EOPNOTSUPP;
/* Retrieve the head sk_buff from the socket's receive queue. */
err = 0;
skb = skb_recv_datagram(&vsk->sk, flags, noblock, &err);
if (err)
return err;
if (!skb)
return -EAGAIN;
dg = (struct vmci_datagram *)skb->data;
if (!dg)
/* err is 0, meaning we read zero bytes. */
goto out;
payload_len = dg->payload_size;
/* Ensure the sk_buff matches the payload size claimed in the packet. */
if (payload_len != skb->len - sizeof(*dg)) {
err = -EINVAL;
goto out;
}
if (payload_len > len) {
payload_len = len;
msg->msg_flags |= MSG_TRUNC;
}
/* Place the datagram payload in the user's iovec. */
err = skb_copy_datagram_iovec(skb, sizeof(*dg), msg->msg_iov,
payload_len);
if (err)
goto out;
msg->msg_namelen = 0;
if (msg->msg_name) {
struct sockaddr_vm *vm_addr;
/* Provide the address of the sender. */
vm_addr = (struct sockaddr_vm *)msg->msg_name;
vsock_addr_init(vm_addr, dg->src.context, dg->src.resource);
msg->msg_namelen = sizeof(*vm_addr);
}
err = payload_len;
out:
skb_free_datagram(&vsk->sk, skb);
return err;
} | 270 | True | 1 |
|
CVE-2013-3232 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:N/A:N | LOCAL | LOW | NONE | COMPLETE | NONE | NONE | 4.9 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'https://github.com/torvalds/linux/commit/3ce5efad47b62c57a4f5c54248347085a750ce0e', 'name': 'https://github.com/torvalds/linux/commit/3ce5efad47b62c57a4f5c54248347085a750ce0e', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2013/04/14/3', 'name': '[oss-security] 20130414 Linux kernel: more net info leak fixes for v3.9', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=c802d759623acbd6e1ee9fbdabae89159a513913', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=c802d759623acbd6e1ee9fbdabae89159a513913', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'https://lkml.org/lkml/2013/4/14/107', 'name': '[linux-kernel] 20130414 Linux 3.9-rc7', 'refsource': 'MLIST', 'tags': ['Vendor Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=3ce5efad47b62c57a4f5c54248347085a750ce0e', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=3ce5efad47b62c57a4f5c54248347085a750ce0e', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/c802d759623acbd6e1ee9fbdabae89159a513913', 'name': 'https://github.com/torvalds/linux/commit/c802d759623acbd6e1ee9fbdabae89159a513913', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2013:176', 'name': 'MDVSA-2013:176', 'refsource': 'MANDRIVA', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00018.html', 'name': 'openSUSE-SU-2013:1187', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.fedoraproject.org/pipermail/package-announce/2013-April/103750.html', 'name': 'FEDORA-2013-6537', 'refsource': 'FEDORA', 'tags': []}, {'url': 'http://lists.fedoraproject.org/pipermail/package-announce/2013-May/104480.html', 'name': 'FEDORA-2013-6999', 'refsource': 'FEDORA', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-updates/2013-12/msg00129.html', 'name': 'openSUSE-SU-2013:1971', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00016.html', 'name': 'SUSE-SU-2013:1182', 'refsource': 'SUSE', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-200'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:rc6:*:*:*:*:*:*', 'versionEndIncluding': '3.9', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.9:rc4:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.9:rc5:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.9:rc3:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.9:rc2:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.9:rc1:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The nr_recvmsg function in net/netrom/af_netrom.c in the Linux kernel before 3.9-rc7 does not initialize a certain data structure, which allows local users to obtain sensitive information from kernel stack memory via a crafted recvmsg or recvfrom system call.'}] | 2017-11-29T02:29Z | 2013-04-22T11:41Z | Exposure of Sensitive Information to an Unauthorized Actor | The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. |
There are many different kinds of mistakes that introduce information exposures. The severity of the error can range widely, depending on the context in which the product operates, the type of sensitive information that is revealed, and the benefits it may provide to an attacker. Some kinds of sensitive information include:
private, personal information, such as personal messages, financial data, health records, geographic location, or contact details
system status and environment, such as the operating system and installed packages
business secrets and intellectual property
network status and configuration
the product's own code or internal state
metadata, e.g. logging of connections or message headers
indirect information, such as a discrepancy between two internal operations that can be observed by an outsider
Information might be sensitive to different parties, each of which may have their own expectations for whether the information should be protected. These parties include:
the product's own users
people or organizations whose information is created or used by the product, even if they are not direct product users
the product's administrators, including the admins of the system(s) and/or networks on which the product operates
the developer
Information exposures can occur in different ways:
the code explicitly inserts sensitive information into resources or messages that are intentionally made accessible to unauthorized actors, but should not contain the information - i.e., the information should have been "scrubbed" or "sanitized"
a different weakness or mistake indirectly inserts the sensitive information into resources, such as a web script error revealing the full system path of the program.
the code manages resources that intentionally contain sensitive information, but the resources are unintentionally made accessible to unauthorized actors. In this case, the information exposure is resultant - i.e., a different weakness enabled the access to the information in the first place.
It is common practice to describe any loss of confidentiality as an "information exposure," but this can lead to overuse of CWE-200 in CWE mapping. From the CWE perspective, loss of confidentiality is a technical impact that can arise from dozens of different weaknesses, such as insecure file permissions or out-of-bounds read. CWE-200 and its lower-level descendants are intended to cover the mistakes that occur in behaviors that explicitly manage, store, transfer, or cleanse sensitive information.
| https://cwe.mitre.org/data/definitions/200.html | 0 | Wei Yongjun | 2013-04-09 10:07:19+08:00 | netrom: fix invalid use of sizeof in nr_recvmsg()
sizeof() when applied to a pointer typed expression gives the size of the
pointer, not that of the pointed data.
Introduced by commit 3ce5ef(netrom: fix info leak via msg_name in nr_recvmsg)
Signed-off-by: Wei Yongjun <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | c802d759623acbd6e1ee9fbdabae89159a513913 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | nr_recvmsg | nr_recvmsg( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t size , int flags) | ['iocb', 'sock', 'msg', 'size', 'flags'] | static int nr_recvmsg(struct kiocb *iocb, struct socket *sock,
struct msghdr *msg, size_t size, int flags)
{
struct sock *sk = sock->sk;
struct sockaddr_ax25 *sax = (struct sockaddr_ax25 *)msg->msg_name;
size_t copied;
struct sk_buff *skb;
int er;
/*
* This works for seqpacket too. The receiver has ordered the queue for
* us! We do one quick check first though
*/
lock_sock(sk);
if (sk->sk_state != TCP_ESTABLISHED) {
release_sock(sk);
return -ENOTCONN;
}
/* Now we can treat all alike */
if ((skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT, flags & MSG_DONTWAIT, &er)) == NULL) {
release_sock(sk);
return er;
}
skb_reset_transport_header(skb);
copied = skb->len;
if (copied > size) {
copied = size;
msg->msg_flags |= MSG_TRUNC;
}
er = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
if (er < 0) {
skb_free_datagram(sk, skb);
release_sock(sk);
return er;
}
if (sax != NULL) {
memset(sax, 0, sizeof(sax));
sax->sax25_family = AF_NETROM;
skb_copy_from_linear_data_offset(skb, 7, sax->sax25_call.ax25_call,
AX25_ADDR_LEN);
}
msg->msg_namelen = sizeof(*sax);
skb_free_datagram(sk, skb);
release_sock(sk);
return copied;
} | 250 | True | 1 |
|
CVE-2013-3301 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.8', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.8', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.openwall.com/lists/oss-security/2013/04/15/1', 'name': '[oss-security] 20130415 CVE request - Linux kernel: tracing NULL pointer dereference', 'refsource': 'MLIST', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/6a76f8c0ab19f215af2a3442870eeb5f0e81998d', 'name': 'https://github.com/torvalds/linux/commit/6a76f8c0ab19f215af2a3442870eeb5f0e81998d', 'refsource': 'CONFIRM', 'tags': ['Exploit']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6a76f8c0ab19f215af2a3442870eeb5f0e81998d', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6a76f8c0ab19f215af2a3442870eeb5f0e81998d', 'refsource': 'CONFIRM', 'tags': ['Exploit']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=952197', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=952197', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1836-1', 'name': 'USN-1836-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1834-1', 'name': 'USN-1834-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1838-1', 'name': 'USN-1838-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1835-1', 'name': 'USN-1835-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2013-09/msg00003.html', 'name': 'SUSE-SU-2013:1473', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-updates/2013-12/msg00129.html', 'name': 'openSUSE-SU-2013:1971', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-1051.html', 'name': 'RHSA-2013:1051', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'NVD-CWE-Other'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.21:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.30:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.25:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.1.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.11:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0:rc2:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.19:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.22:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.6.7:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.13:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.26:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.3:rc4:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.23:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.1:rc1:*:*:*:*:*:*', 'cpe_name': []}, 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'cpe:2.3:o:linux:linux_kernel:3.2.18:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.63:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.7.9:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4:rc3:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.18:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.3:rc5:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.7.7:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.3:rc3:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.3.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.26:*:*:*:*:*:*:*', 'cpe_name': []}, 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{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4:rc2:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.27:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.28:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2:rc2:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0:rc4:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.52:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.35:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.36:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 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dereference and system crash) or possibly have unspecified other impact by leveraging the CAP_SYS_ADMIN capability for write access to the (1) set_ftrace_pid or (2) set_graph_function file, and then making an lseek system call.'}] | 2021-07-15T19:16Z | 2013-04-29T14:55Z | Other | NVD is only using a subset of CWE for mapping instead of the entire CWE, and the weakness type is not covered by that subset. | Insufficient Information | https://nvd.nist.gov/vuln/categories | 0 | Namhyung Kim | 2013-04-11 15:55:01+09:00 | tracing: Fix possible NULL pointer dereferences
Currently set_ftrace_pid and set_graph_function files use seq_lseek
for their fops. However seq_open() is called only for FMODE_READ in
the fops->open() so that if an user tries to seek one of those file
when she open it for writing, it sees NULL seq_file and then panic.
It can be easily reproduced with following command:
$ cd /sys/kernel/debug/tracing
$ echo 1234 | sudo tee -a set_ftrace_pid
In this example, GNU coreutils' tee opens the file with fopen(, "a")
and then the fopen() internally calls lseek().
Link: http://lkml.kernel.org/r/[email protected]
Cc: Frederic Weisbecker <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: [email protected]
Signed-off-by: Namhyung Kim <[email protected]>
Signed-off-by: Steven Rostedt <[email protected]> | 6a76f8c0ab19f215af2a3442870eeb5f0e81998d | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | ftrace_regex_lseek | ftrace_regex_lseek( struct file * file , loff_t offset , int whence) | ['file', 'offset', 'whence'] | ftrace_regex_lseek(struct file *file, loff_t offset, int whence)
{
loff_t ret;
if (file->f_mode & FMODE_READ)
ret = seq_lseek(file, offset, whence);
else
file->f_pos = ret = 1;
return ret;
} | 49 | True | 1 |
|
CVE-2013-1959 | False | False | False | False | AV:L/AC:H/Au:N/C:P/I:P/A:P | LOCAL | HIGH | NONE | PARTIAL | PARTIAL | PARTIAL | 3.7 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://www.openwall.com/lists/oss-security/2013/04/29/1', 'name': '[oss-security] 20130428 Multiple Linux setuid output redirection vulnerabilities', 'refsource': 'MLIST', 'tags': ['Exploit']}, {'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.9', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.9', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=e3211c120a85b792978bcb4be7b2886df18d27f0', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=e3211c120a85b792978bcb4be7b2886df18d27f0', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/6708075f104c3c9b04b23336bb0366ca30c3931b', 'name': 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{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.30:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.67:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'kernel/user_namespace.c in the Linux kernel before 3.8.9 does not have appropriate capability requirements for the uid_map and gid_map files, which allows local users to gain privileges by opening a file within an unprivileged process and then modifying the file within a privileged process.'}] | 2013-12-01T04:27Z | 2013-05-03T11:57Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Eric W. Biederman | 2013-04-14 13:47:02-07:00 | userns: Don't let unprivileged users trick privileged users into setting the id_map
When we require privilege for setting /proc/<pid>/uid_map or
/proc/<pid>/gid_map no longer allow an unprivileged user to
open the file and pass it to a privileged program to write
to the file.
Instead when privilege is required require both the opener and the
writer to have the necessary capabilities.
I have tested this code and verified that setting /proc/<pid>/uid_map
fails when an unprivileged user opens the file and a privielged user
attempts to set the mapping, that unprivileged users can still map
their own id, and that a privileged users can still setup an arbitrary
mapping.
Reported-by: Andy Lutomirski <[email protected]>
Signed-off-by: "Eric W. Biederman" <[email protected]>
Signed-off-by: Andy Lutomirski <[email protected]> | 6708075f104c3c9b04b23336bb0366ca30c3931b | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | map_write | map_write( struct file * file , const char __user * buf , size_t count , loff_t * ppos , int cap_setid , struct uid_gid_map * map , struct uid_gid_map * parent_map) | ['file', 'buf', 'count', 'ppos', 'cap_setid', 'map', 'parent_map'] | static ssize_t map_write(struct file *file, const char __user *buf,
size_t count, loff_t *ppos,
int cap_setid,
struct uid_gid_map *map,
struct uid_gid_map *parent_map)
{
struct seq_file *seq = file->private_data;
struct user_namespace *ns = seq->private;
struct uid_gid_map new_map;
unsigned idx;
struct uid_gid_extent *extent = NULL;
unsigned long page = 0;
char *kbuf, *pos, *next_line;
ssize_t ret = -EINVAL;
/*
* The id_map_mutex serializes all writes to any given map.
*
* Any map is only ever written once.
*
* An id map fits within 1 cache line on most architectures.
*
* On read nothing needs to be done unless you are on an
* architecture with a crazy cache coherency model like alpha.
*
* There is a one time data dependency between reading the
* count of the extents and the values of the extents. The
* desired behavior is to see the values of the extents that
* were written before the count of the extents.
*
* To achieve this smp_wmb() is used on guarantee the write
* order and smp_read_barrier_depends() is guaranteed that we
* don't have crazy architectures returning stale data.
*
*/
mutex_lock(&id_map_mutex);
ret = -EPERM;
/* Only allow one successful write to the map */
if (map->nr_extents != 0)
goto out;
/* Require the appropriate privilege CAP_SETUID or CAP_SETGID
* over the user namespace in order to set the id mapping.
*/
if (cap_valid(cap_setid) && !ns_capable(ns, cap_setid))
goto out;
/* Get a buffer */
ret = -ENOMEM;
page = __get_free_page(GFP_TEMPORARY);
kbuf = (char *) page;
if (!page)
goto out;
/* Only allow <= page size writes at the beginning of the file */
ret = -EINVAL;
if ((*ppos != 0) || (count >= PAGE_SIZE))
goto out;
/* Slurp in the user data */
ret = -EFAULT;
if (copy_from_user(kbuf, buf, count))
goto out;
kbuf[count] = '\0';
/* Parse the user data */
ret = -EINVAL;
pos = kbuf;
new_map.nr_extents = 0;
for (;pos; pos = next_line) {
extent = &new_map.extent[new_map.nr_extents];
/* Find the end of line and ensure I don't look past it */
next_line = strchr(pos, '\n');
if (next_line) {
*next_line = '\0';
next_line++;
if (*next_line == '\0')
next_line = NULL;
}
pos = skip_spaces(pos);
extent->first = simple_strtoul(pos, &pos, 10);
if (!isspace(*pos))
goto out;
pos = skip_spaces(pos);
extent->lower_first = simple_strtoul(pos, &pos, 10);
if (!isspace(*pos))
goto out;
pos = skip_spaces(pos);
extent->count = simple_strtoul(pos, &pos, 10);
if (*pos && !isspace(*pos))
goto out;
/* Verify there is not trailing junk on the line */
pos = skip_spaces(pos);
if (*pos != '\0')
goto out;
/* Verify we have been given valid starting values */
if ((extent->first == (u32) -1) ||
(extent->lower_first == (u32) -1 ))
goto out;
/* Verify count is not zero and does not cause the extent to wrap */
if ((extent->first + extent->count) <= extent->first)
goto out;
if ((extent->lower_first + extent->count) <= extent->lower_first)
goto out;
/* Do the ranges in extent overlap any previous extents? */
if (mappings_overlap(&new_map, extent))
goto out;
new_map.nr_extents++;
/* Fail if the file contains too many extents */
if ((new_map.nr_extents == UID_GID_MAP_MAX_EXTENTS) &&
(next_line != NULL))
goto out;
}
/* Be very certaint the new map actually exists */
if (new_map.nr_extents == 0)
goto out;
ret = -EPERM;
/* Validate the user is allowed to use user id's mapped to. */
if (!new_idmap_permitted(ns, cap_setid, &new_map))
goto out;
/* Map the lower ids from the parent user namespace to the
* kernel global id space.
*/
for (idx = 0; idx < new_map.nr_extents; idx++) {
u32 lower_first;
extent = &new_map.extent[idx];
lower_first = map_id_range_down(parent_map,
extent->lower_first,
extent->count);
/* Fail if we can not map the specified extent to
* the kernel global id space.
*/
if (lower_first == (u32) -1)
goto out;
extent->lower_first = lower_first;
}
/* Install the map */
memcpy(map->extent, new_map.extent,
new_map.nr_extents*sizeof(new_map.extent[0]));
smp_wmb();
map->nr_extents = new_map.nr_extents;
*ppos = count;
ret = count;
out:
mutex_unlock(&id_map_mutex);
if (page)
free_page(page);
return ret;
} | 663 | True | 1 |
||
CVE-2013-1959 | False | False | False | False | AV:L/AC:H/Au:N/C:P/I:P/A:P | LOCAL | HIGH | NONE | PARTIAL | PARTIAL | PARTIAL | 3.7 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://www.openwall.com/lists/oss-security/2013/04/29/1', 'name': '[oss-security] 20130428 Multiple Linux setuid output redirection vulnerabilities', 'refsource': 'MLIST', 'tags': ['Exploit']}, {'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.9', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.9', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=e3211c120a85b792978bcb4be7b2886df18d27f0', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=e3211c120a85b792978bcb4be7b2886df18d27f0', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/6708075f104c3c9b04b23336bb0366ca30c3931b', 'name': 'https://github.com/torvalds/linux/commit/6708075f104c3c9b04b23336bb0366ca30c3931b', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/e3211c120a85b792978bcb4be7b2886df18d27f0', 'name': 'https://github.com/torvalds/linux/commit/e3211c120a85b792978bcb4be7b2886df18d27f0', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6708075f104c3c9b04b23336bb0366ca30c3931b', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6708075f104c3c9b04b23336bb0366ca30c3931b', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.exploit-db.com/exploits/25307', 'name': '25307', 'refsource': 'EXPLOIT-DB', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.21:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 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{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0:rc1:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.55:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.40:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.17:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.33:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.8:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.7.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.6.10:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4:rc1:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 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{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.30:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.67:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'kernel/user_namespace.c in the Linux kernel before 3.8.9 does not have appropriate capability requirements for the uid_map and gid_map files, which allows local users to gain privileges by opening a file within an unprivileged process and then modifying the file within a privileged process.'}] | 2013-12-01T04:27Z | 2013-05-03T11:57Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Eric W. Biederman | 2013-04-14 13:47:02-07:00 | userns: Don't let unprivileged users trick privileged users into setting the id_map
When we require privilege for setting /proc/<pid>/uid_map or
/proc/<pid>/gid_map no longer allow an unprivileged user to
open the file and pass it to a privileged program to write
to the file.
Instead when privilege is required require both the opener and the
writer to have the necessary capabilities.
I have tested this code and verified that setting /proc/<pid>/uid_map
fails when an unprivileged user opens the file and a privielged user
attempts to set the mapping, that unprivileged users can still map
their own id, and that a privileged users can still setup an arbitrary
mapping.
Reported-by: Andy Lutomirski <[email protected]>
Signed-off-by: "Eric W. Biederman" <[email protected]>
Signed-off-by: Andy Lutomirski <[email protected]> | 6708075f104c3c9b04b23336bb0366ca30c3931b | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | new_idmap_permitted | new_idmap_permitted( struct user_namespace * ns , int cap_setid , struct uid_gid_map * new_map) | ['ns', 'cap_setid', 'new_map'] | static bool new_idmap_permitted(struct user_namespace *ns, int cap_setid,
struct uid_gid_map *new_map)
{
/* Allow mapping to your own filesystem ids */
if ((new_map->nr_extents == 1) && (new_map->extent[0].count == 1)) {
u32 id = new_map->extent[0].lower_first;
if (cap_setid == CAP_SETUID) {
kuid_t uid = make_kuid(ns->parent, id);
if (uid_eq(uid, current_fsuid()))
return true;
}
else if (cap_setid == CAP_SETGID) {
kgid_t gid = make_kgid(ns->parent, id);
if (gid_eq(gid, current_fsgid()))
return true;
}
}
/* Allow anyone to set a mapping that doesn't require privilege */
if (!cap_valid(cap_setid))
return true;
/* Allow the specified ids if we have the appropriate capability
* (CAP_SETUID or CAP_SETGID) over the parent user namespace.
*/
if (ns_capable(ns->parent, cap_setid))
return true;
return false;
} | 151 | True | 1 |
||
CVE-2013-1959 | False | False | False | False | AV:L/AC:H/Au:N/C:P/I:P/A:P | LOCAL | HIGH | NONE | PARTIAL | PARTIAL | PARTIAL | 3.7 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://www.openwall.com/lists/oss-security/2013/04/29/1', 'name': '[oss-security] 20130428 Multiple Linux setuid output redirection vulnerabilities', 'refsource': 'MLIST', 'tags': ['Exploit']}, {'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.9', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.9', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=e3211c120a85b792978bcb4be7b2886df18d27f0', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=e3211c120a85b792978bcb4be7b2886df18d27f0', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/6708075f104c3c9b04b23336bb0366ca30c3931b', 'name': 'https://github.com/torvalds/linux/commit/6708075f104c3c9b04b23336bb0366ca30c3931b', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/e3211c120a85b792978bcb4be7b2886df18d27f0', 'name': 'https://github.com/torvalds/linux/commit/e3211c120a85b792978bcb4be7b2886df18d27f0', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6708075f104c3c9b04b23336bb0366ca30c3931b', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6708075f104c3c9b04b23336bb0366ca30c3931b', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.exploit-db.com/exploits/25307', 'name': '25307', 'refsource': 'EXPLOIT-DB', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.21:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 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{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.31:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.66:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.6.5:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.10:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4:rc4:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4:rc6:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.21:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 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{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.39:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.9:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.7.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.7.10:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.7.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.7:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.17:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.4.22:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.3.5:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2:rc6:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2.17:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.1.10:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.45:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.14:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.15:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.7:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.30:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.67:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'kernel/user_namespace.c in the Linux kernel before 3.8.9 does not have appropriate capability requirements for the uid_map and gid_map files, which allows local users to gain privileges by opening a file within an unprivileged process and then modifying the file within a privileged process.'}] | 2013-12-01T04:27Z | 2013-05-03T11:57Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Andy Lutomirski | 2013-04-14 16:28:19-07:00 | userns: Check uid_map's opener's fsuid, not the current fsuid
Signed-off-by: Andy Lutomirski <[email protected]> | e3211c120a85b792978bcb4be7b2886df18d27f0 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | new_idmap_permitted | new_idmap_permitted( const struct file * file , struct user_namespace * ns , int cap_setid , struct uid_gid_map * new_map) | ['file', 'ns', 'cap_setid', 'new_map'] | static bool new_idmap_permitted(const struct file *file,
struct user_namespace *ns, int cap_setid,
struct uid_gid_map *new_map)
{
/* Allow mapping to your own filesystem ids */
if ((new_map->nr_extents == 1) && (new_map->extent[0].count == 1)) {
u32 id = new_map->extent[0].lower_first;
if (cap_setid == CAP_SETUID) {
kuid_t uid = make_kuid(ns->parent, id);
if (uid_eq(uid, current_fsuid()))
return true;
}
else if (cap_setid == CAP_SETGID) {
kgid_t gid = make_kgid(ns->parent, id);
if (gid_eq(gid, current_fsgid()))
return true;
}
}
/* Allow anyone to set a mapping that doesn't require privilege */
if (!cap_valid(cap_setid))
return true;
/* Allow the specified ids if we have the appropriate capability
* (CAP_SETUID or CAP_SETGID) over the parent user namespace.
* And the opener of the id file also had the approprpiate capability.
*/
if (ns_capable(ns->parent, cap_setid) &&
file_ns_capable(file, ns->parent, cap_setid))
return true;
return false;
} | 168 | True | 1 |
||
CVE-2013-2094 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://twitter.com/djrbliss/statuses/334301992648331267', 'name': 'http://twitter.com/djrbliss/statuses/334301992648331267', 'refsource': 'MISC', 'tags': ['Patch']}, {'url': 'http://news.ycombinator.com/item?id=5703758', 'name': 'http://news.ycombinator.com/item?id=5703758', 'refsource': 'MISC', 'tags': []}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=962792', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=962792', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.reddit.com/r/netsec/comments/1eb9iw', 'name': 'http://www.reddit.com/r/netsec/comments/1eb9iw', 'refsource': 'MISC', 'tags': []}, {'url': 'http://www.openwall.com/lists/oss-security/2013/05/14/6', 'name': '[oss-security] 20130514 Re: CVE Request: linux kernel perf out-of-bounds access', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://packetstormsecurity.com/files/121616/semtex.c', 'name': 'http://packetstormsecurity.com/files/121616/semtex.c', 'refsource': 'MISC', 'tags': ['Exploit']}, {'url': 'https://github.com/torvalds/linux/commit/8176cced706b5e5d15887584150764894e94e02f', 'name': 'https://github.com/torvalds/linux/commit/8176cced706b5e5d15887584150764894e94e02f', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://lkml.indiana.edu/hypermail/linux/kernel/1304.1/03976.html', 'name': '[linux-kernel] 20130412 Re: sw_perf_event_destroy() oops while fuzzing', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://lkml.indiana.edu/hypermail/linux/kernel/1304.1/04302.html', 'name': '[linux-kernel] 20130413 Re: sw_perf_event_destroy() oops while fuzzing', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://lkml.indiana.edu/hypermail/linux/kernel/1304.1/03652.html', 'name': '[linux-kernel] 20130412 sw_perf_event_destroy() oops while fuzzing', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=8176cced706b5e5d15887584150764894e94e02f', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=8176cced706b5e5d15887584150764894e94e02f', 'refsource': 'CONFIRM', 'tags': ['Patch']}, {'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.9', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.9', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1828-1', 'name': 'USN-1828-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2013-05/msg00008.html', 'name': 'SUSE-SU-2013:0819', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1827-1', 'name': 'USN-1827-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-0830.html', 'name': 'RHSA-2013:0830', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1826-1', 'name': 'USN-1826-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://lists.centos.org/pipermail/centos-announce/2013-May/019729.html', 'name': '[CentOS-announce] 20130515 CentOS-6 CVE-2013-2094 Kernel Issue', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1825-1', 'name': 'USN-1825-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://lists.centos.org/pipermail/centos-announce/2013-May/019733.html', 'name': '[CentOS-announce] 20130517 CESA-2013:0830 Important CentOS 6 kernel Update', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2013-05/msg00018.html', 'name': 'openSUSE-SU-2013:0847', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1836-1', 'name': 'USN-1836-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1838-1', 'name': 'USN-1838-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html', 'name': 'openSUSE-SU-2013:0925', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00009.html', 'name': 'openSUSE-SU-2013:0951', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2013:176', 'name': 'MDVSA-2013:176', 'refsource': 'MANDRIVA', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00017.html', 'name': 'openSUSE-SU-2013:1042', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.osvdb.org/93361', 'name': '93361', 'refsource': 'OSVDB', 'tags': []}, {'url': 'http://www.exploit-db.com/exploits/33589', 'name': '33589', 'refsource': 'EXPLOIT-DB', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-189'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.7:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.8.8', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.5:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.4:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9 uses an incorrect integer data type, which allows local users to gain privileges via a crafted perf_event_open system call.'}] | 2017-01-07T02:59Z | 2013-05-14T20:55Z | Numeric Errors | Weaknesses in this category are related to improper calculation or conversion of numbers. | https://cwe.mitre.org/data/definitions/189.html | 1 | Tommi Rantala | 2013-04-13 22:49:14+03:00 | perf: Treat attr.config as u64 in perf_swevent_init()
Trinity discovered that we fail to check all 64 bits of
attr.config passed by user space, resulting to out-of-bounds
access of the perf_swevent_enabled array in
sw_perf_event_destroy().
Introduced in commit b0a873ebb ("perf: Register PMU
implementations").
Signed-off-by: Tommi Rantala <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: [email protected]
Cc: Paul Mackerras <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]> | 8176cced706b5e5d15887584150764894e94e02f | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | perf_swevent_init | perf_swevent_init( struct perf_event * event) | ['event'] | static int perf_swevent_init(struct perf_event *event)
{
int event_id = event->attr.config;
if (event->attr.type != PERF_TYPE_SOFTWARE)
return -ENOENT;
/*
* no branch sampling for software events
*/
if (has_branch_stack(event))
return -EOPNOTSUPP;
switch (event_id) {
case PERF_COUNT_SW_CPU_CLOCK:
case PERF_COUNT_SW_TASK_CLOCK:
return -ENOENT;
default:
break;
}
if (event_id >= PERF_COUNT_SW_MAX)
return -ENOENT;
if (!event->parent) {
int err;
err = swevent_hlist_get(event);
if (err)
return err;
static_key_slow_inc(&perf_swevent_enabled[event_id]);
event->destroy = sw_perf_event_destroy;
}
return 0;
} | 117 | True | 1 |
||
CVE-2013-2146 | False | False | False | False | AV:L/AC:M/Au:N/C:N/I:N/A:C | LOCAL | MEDIUM | NONE | NONE | NONE | COMPLETE | 4.7 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.9', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.9', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/f1923820c447e986a9da0fc6bf60c1dccdf0408e', 'name': 'https://github.com/torvalds/linux/commit/f1923820c447e986a9da0fc6bf60c1dccdf0408e', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Patch']}, {'url': 'http://www.openwall.com/lists/oss-security/2013/06/05/23', 'name': '[oss-security] 20130605 Re: CVE Request: More perf security fixes', 'refsource': 'MLIST', 'tags': []}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=971309', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=971309', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=f1923820c447e986a9da0fc6bf60c1dccdf0408e', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=f1923820c447e986a9da0fc6bf60c1dccdf0408e', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Patch']}, {'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2013:176', 'name': 'MDVSA-2013:176', 'refsource': 'MANDRIVA', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-1173.html', 'name': 'RHSA-2013:1173', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-20'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.7:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.8.8', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.5:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.4:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'arch/x86/kernel/cpu/perf_event_intel.c in the Linux kernel before 3.8.9, when the Performance Events Subsystem is enabled, specifies an incorrect bitmask, which allows local users to cause a denial of service (general protection fault and system crash) by attempting to set a reserved bit.'}] | 2014-02-07T04:46Z | 2013-06-07T14:03Z | Improper Input Validation | The product receives input or data, but it does
not validate or incorrectly validates that the input has the
properties that are required to process the data safely and
correctly. |
Input validation is a frequently-used technique
for checking potentially dangerous inputs in order to
ensure that the inputs are safe for processing within the
code, or when communicating with other components. When
software does not validate input properly, an attacker is
able to craft the input in a form that is not expected by
the rest of the application. This will lead to parts of the
system receiving unintended input, which may result in
altered control flow, arbitrary control of a resource, or
arbitrary code execution.
Input validation is not the only technique for
processing input, however. Other techniques attempt to
transform potentially-dangerous input into something safe, such
as filtering (CWE-790) - which attempts to remove dangerous
inputs - or encoding/escaping (CWE-116), which attempts to
ensure that the input is not misinterpreted when it is included
in output to another component. Other techniques exist as well
(see CWE-138 for more examples.)
Input validation can be applied to:
raw data - strings, numbers, parameters, file contents, etc.
metadata - information about the raw data, such as headers or size
Data can be simple or structured. Structured data
can be composed of many nested layers, composed of
combinations of metadata and raw data, with other simple or
structured data.
Many properties of raw data or metadata may need
to be validated upon entry into the code, such
as:
specified quantities such as size, length, frequency, price, rate, number of operations, time, etc.
implied or derived quantities, such as the actual size of a file instead of a specified size
indexes, offsets, or positions into more complex data structures
symbolic keys or other elements into hash tables, associative arrays, etc.
well-formedness, i.e. syntactic correctness - compliance with expected syntax
lexical token correctness - compliance with rules for what is treated as a token
specified or derived type - the actual type of the input (or what the input appears to be)
consistency - between individual data elements, between raw data and metadata, between references, etc.
conformance to domain-specific rules, e.g. business logic
equivalence - ensuring that equivalent inputs are treated the same
authenticity, ownership, or other attestations about the input, e.g. a cryptographic signature to prove the source of the data
Implied or derived properties of data must often
be calculated or inferred by the code itself. Errors in
deriving properties may be considered a contributing factor
to improper input validation.
Note that "input validation" has very different
meanings to different people, or within different
classification schemes. Caution must be used when
referencing this CWE entry or mapping to it. For example,
some weaknesses might involve inadvertently giving control
to an attacker over an input when they should not be able
to provide an input at all, but sometimes this is referred
to as input validation.
Finally, it is important to emphasize that the
distinctions between input validation and output escaping
are often blurred, and developers must be careful to
understand the difference, including how input validation
is not always sufficient to prevent vulnerabilities,
especially when less stringent data types must be
supported, such as free-form text. Consider a SQL injection
scenario in which a person's last name is inserted into a
query. The name "O'Reilly" would likely pass the validation
step since it is a common last name in the English
language. However, this valid name cannot be directly
inserted into the database because it contains the "'"
apostrophe character, which would need to be escaped or
otherwise transformed. In this case, removing the
apostrophe might reduce the risk of SQL injection, but it
would produce incorrect behavior because the wrong name
would be recorded.
| https://cwe.mitre.org/data/definitions/20.html | 0 | Stephane Eranian | 2013-04-16 13:51:43+02:00 | perf/x86: Fix offcore_rsp valid mask for SNB/IVB
The valid mask for both offcore_response_0 and
offcore_response_1 was wrong for SNB/SNB-EP,
IVB/IVB-EP. It was possible to write to
reserved bit and cause a GP fault crashing
the kernel.
This patch fixes the problem by correctly marking the
reserved bits in the valid mask for all the processors
mentioned above.
A distinction between desktop and server parts is introduced
because bits 24-30 are only available on the server parts.
This version of the patch is just a rebase to perf/urgent tree
and should apply to older kernels as well.
Signed-off-by: Stephane Eranian <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Ingo Molnar <[email protected]> | f1923820c447e986a9da0fc6bf60c1dccdf0408e | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | intel_pmu_init | intel_pmu_init( void) | ['void'] | __init int intel_pmu_init(void)
{
union cpuid10_edx edx;
union cpuid10_eax eax;
union cpuid10_ebx ebx;
struct event_constraint *c;
unsigned int unused;
int version;
if (!cpu_has(&boot_cpu_data, X86_FEATURE_ARCH_PERFMON)) {
switch (boot_cpu_data.x86) {
case 0x6:
return p6_pmu_init();
case 0xb:
return knc_pmu_init();
case 0xf:
return p4_pmu_init();
}
return -ENODEV;
}
/*
* Check whether the Architectural PerfMon supports
* Branch Misses Retired hw_event or not.
*/
cpuid(10, &eax.full, &ebx.full, &unused, &edx.full);
if (eax.split.mask_length < ARCH_PERFMON_EVENTS_COUNT)
return -ENODEV;
version = eax.split.version_id;
if (version < 2)
x86_pmu = core_pmu;
else
x86_pmu = intel_pmu;
x86_pmu.version = version;
x86_pmu.num_counters = eax.split.num_counters;
x86_pmu.cntval_bits = eax.split.bit_width;
x86_pmu.cntval_mask = (1ULL << eax.split.bit_width) - 1;
x86_pmu.events_maskl = ebx.full;
x86_pmu.events_mask_len = eax.split.mask_length;
x86_pmu.max_pebs_events = min_t(unsigned, MAX_PEBS_EVENTS, x86_pmu.num_counters);
/*
* Quirk: v2 perfmon does not report fixed-purpose events, so
* assume at least 3 events:
*/
if (version > 1)
x86_pmu.num_counters_fixed = max((int)edx.split.num_counters_fixed, 3);
/*
* v2 and above have a perf capabilities MSR
*/
if (version > 1) {
u64 capabilities;
rdmsrl(MSR_IA32_PERF_CAPABILITIES, capabilities);
x86_pmu.intel_cap.capabilities = capabilities;
}
intel_ds_init();
x86_add_quirk(intel_arch_events_quirk); /* Install first, so it runs last */
/*
* Install the hw-cache-events table:
*/
switch (boot_cpu_data.x86_model) {
case 14: /* 65 nm core solo/duo, "Yonah" */
pr_cont("Core events, ");
break;
case 15: /* original 65 nm celeron/pentium/core2/xeon, "Merom"/"Conroe" */
x86_add_quirk(intel_clovertown_quirk);
case 22: /* single-core 65 nm celeron/core2solo "Merom-L"/"Conroe-L" */
case 23: /* current 45 nm celeron/core2/xeon "Penryn"/"Wolfdale" */
case 29: /* six-core 45 nm xeon "Dunnington" */
memcpy(hw_cache_event_ids, core2_hw_cache_event_ids,
sizeof(hw_cache_event_ids));
intel_pmu_lbr_init_core();
x86_pmu.event_constraints = intel_core2_event_constraints;
x86_pmu.pebs_constraints = intel_core2_pebs_event_constraints;
pr_cont("Core2 events, ");
break;
case 26: /* 45 nm nehalem, "Bloomfield" */
case 30: /* 45 nm nehalem, "Lynnfield" */
case 46: /* 45 nm nehalem-ex, "Beckton" */
memcpy(hw_cache_event_ids, nehalem_hw_cache_event_ids,
sizeof(hw_cache_event_ids));
memcpy(hw_cache_extra_regs, nehalem_hw_cache_extra_regs,
sizeof(hw_cache_extra_regs));
intel_pmu_lbr_init_nhm();
x86_pmu.event_constraints = intel_nehalem_event_constraints;
x86_pmu.pebs_constraints = intel_nehalem_pebs_event_constraints;
x86_pmu.enable_all = intel_pmu_nhm_enable_all;
x86_pmu.extra_regs = intel_nehalem_extra_regs;
/* UOPS_ISSUED.STALLED_CYCLES */
intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] =
X86_CONFIG(.event=0x0e, .umask=0x01, .inv=1, .cmask=1);
/* UOPS_EXECUTED.CORE_ACTIVE_CYCLES,c=1,i=1 */
intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_BACKEND] =
X86_CONFIG(.event=0xb1, .umask=0x3f, .inv=1, .cmask=1);
x86_add_quirk(intel_nehalem_quirk);
pr_cont("Nehalem events, ");
break;
case 28: /* Atom */
case 38: /* Lincroft */
case 39: /* Penwell */
case 53: /* Cloverview */
case 54: /* Cedarview */
memcpy(hw_cache_event_ids, atom_hw_cache_event_ids,
sizeof(hw_cache_event_ids));
intel_pmu_lbr_init_atom();
x86_pmu.event_constraints = intel_gen_event_constraints;
x86_pmu.pebs_constraints = intel_atom_pebs_event_constraints;
pr_cont("Atom events, ");
break;
case 37: /* 32 nm nehalem, "Clarkdale" */
case 44: /* 32 nm nehalem, "Gulftown" */
case 47: /* 32 nm Xeon E7 */
memcpy(hw_cache_event_ids, westmere_hw_cache_event_ids,
sizeof(hw_cache_event_ids));
memcpy(hw_cache_extra_regs, nehalem_hw_cache_extra_regs,
sizeof(hw_cache_extra_regs));
intel_pmu_lbr_init_nhm();
x86_pmu.event_constraints = intel_westmere_event_constraints;
x86_pmu.enable_all = intel_pmu_nhm_enable_all;
x86_pmu.pebs_constraints = intel_westmere_pebs_event_constraints;
x86_pmu.extra_regs = intel_westmere_extra_regs;
x86_pmu.er_flags |= ERF_HAS_RSP_1;
/* UOPS_ISSUED.STALLED_CYCLES */
intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] =
X86_CONFIG(.event=0x0e, .umask=0x01, .inv=1, .cmask=1);
/* UOPS_EXECUTED.CORE_ACTIVE_CYCLES,c=1,i=1 */
intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_BACKEND] =
X86_CONFIG(.event=0xb1, .umask=0x3f, .inv=1, .cmask=1);
pr_cont("Westmere events, ");
break;
case 42: /* SandyBridge */
case 45: /* SandyBridge, "Romely-EP" */
x86_add_quirk(intel_sandybridge_quirk);
memcpy(hw_cache_event_ids, snb_hw_cache_event_ids,
sizeof(hw_cache_event_ids));
memcpy(hw_cache_extra_regs, snb_hw_cache_extra_regs,
sizeof(hw_cache_extra_regs));
intel_pmu_lbr_init_snb();
x86_pmu.event_constraints = intel_snb_event_constraints;
x86_pmu.pebs_constraints = intel_snb_pebs_event_constraints;
x86_pmu.pebs_aliases = intel_pebs_aliases_snb;
x86_pmu.extra_regs = intel_snb_extra_regs;
/* all extra regs are per-cpu when HT is on */
x86_pmu.er_flags |= ERF_HAS_RSP_1;
x86_pmu.er_flags |= ERF_NO_HT_SHARING;
/* UOPS_ISSUED.ANY,c=1,i=1 to count stall cycles */
intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] =
X86_CONFIG(.event=0x0e, .umask=0x01, .inv=1, .cmask=1);
/* UOPS_DISPATCHED.THREAD,c=1,i=1 to count stall cycles*/
intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_BACKEND] =
X86_CONFIG(.event=0xb1, .umask=0x01, .inv=1, .cmask=1);
pr_cont("SandyBridge events, ");
break;
case 58: /* IvyBridge */
case 62: /* IvyBridge EP */
memcpy(hw_cache_event_ids, snb_hw_cache_event_ids,
sizeof(hw_cache_event_ids));
memcpy(hw_cache_extra_regs, snb_hw_cache_extra_regs,
sizeof(hw_cache_extra_regs));
intel_pmu_lbr_init_snb();
x86_pmu.event_constraints = intel_ivb_event_constraints;
x86_pmu.pebs_constraints = intel_ivb_pebs_event_constraints;
x86_pmu.pebs_aliases = intel_pebs_aliases_snb;
x86_pmu.extra_regs = intel_snb_extra_regs;
/* all extra regs are per-cpu when HT is on */
x86_pmu.er_flags |= ERF_HAS_RSP_1;
x86_pmu.er_flags |= ERF_NO_HT_SHARING;
/* UOPS_ISSUED.ANY,c=1,i=1 to count stall cycles */
intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] =
X86_CONFIG(.event=0x0e, .umask=0x01, .inv=1, .cmask=1);
pr_cont("IvyBridge events, ");
break;
default:
switch (x86_pmu.version) {
case 1:
x86_pmu.event_constraints = intel_v1_event_constraints;
pr_cont("generic architected perfmon v1, ");
break;
default:
/*
* default constraints for v2 and up
*/
x86_pmu.event_constraints = intel_gen_event_constraints;
pr_cont("generic architected perfmon, ");
break;
}
}
if (x86_pmu.num_counters > INTEL_PMC_MAX_GENERIC) {
WARN(1, KERN_ERR "hw perf events %d > max(%d), clipping!",
x86_pmu.num_counters, INTEL_PMC_MAX_GENERIC);
x86_pmu.num_counters = INTEL_PMC_MAX_GENERIC;
}
x86_pmu.intel_ctrl = (1 << x86_pmu.num_counters) - 1;
if (x86_pmu.num_counters_fixed > INTEL_PMC_MAX_FIXED) {
WARN(1, KERN_ERR "hw perf events fixed %d > max(%d), clipping!",
x86_pmu.num_counters_fixed, INTEL_PMC_MAX_FIXED);
x86_pmu.num_counters_fixed = INTEL_PMC_MAX_FIXED;
}
x86_pmu.intel_ctrl |=
((1LL << x86_pmu.num_counters_fixed)-1) << INTEL_PMC_IDX_FIXED;
if (x86_pmu.event_constraints) {
/*
* event on fixed counter2 (REF_CYCLES) only works on this
* counter, so do not extend mask to generic counters
*/
for_each_event_constraint(c, x86_pmu.event_constraints) {
if (c->cmask != X86_RAW_EVENT_MASK
|| c->idxmsk64 == INTEL_PMC_MSK_FIXED_REF_CYCLES) {
continue;
}
c->idxmsk64 |= (1ULL << x86_pmu.num_counters) - 1;
c->weight += x86_pmu.num_counters;
}
}
return 0;
} | 1094 | True | 1 |
|
CVE-2013-2141 | False | False | False | False | AV:L/AC:L/Au:N/C:P/I:N/A:N | LOCAL | LOW | NONE | PARTIAL | NONE | NONE | 2.1 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=970873', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=970873', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.9', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.9', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/b9e146d8eb3b9ecae5086d373b50fa0c1f3e7f0f', 'name': 'https://github.com/torvalds/linux/commit/b9e146d8eb3b9ecae5086d373b50fa0c1f3e7f0f', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Patch']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=b9e146d8eb3b9ecae5086d373b50fa0c1f3e7f0f', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=b9e146d8eb3b9ecae5086d373b50fa0c1f3e7f0f', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Patch']}, {'url': 'http://www.openwall.com/lists/oss-security/2013/06/04/10', 'name': '[oss-security] 20130604 Re: CVE Request: kernel info leak in tkill/tgkill', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2013:176', 'name': 'MDVSA-2013:176', 'refsource': 'MANDRIVA', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1899-1', 'name': 'USN-1899-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-1900-1', 'name': 'USN-1900-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://secunia.com/advisories/55055', 'name': '55055', 'refsource': 'SECUNIA', 'tags': []}, {'url': 'http://www.debian.org/security/2013/dsa-2766', 'name': 'DSA-2766', 'refsource': 'DEBIAN', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-updates/2013-12/msg00129.html', 'name': 'openSUSE-SU-2013:1971', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2013-1801.html', 'name': 'RHSA-2013:1801', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-399'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.7:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.8.8', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.5:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.4:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The do_tkill function in kernel/signal.c in the Linux kernel before 3.8.9 does not initialize a certain data structure, which allows local users to obtain sensitive information from kernel memory via a crafted application that makes a (1) tkill or (2) tgkill system call.'}] | 2018-01-09T02:29Z | 2013-06-07T14:03Z | Resource Management Errors | Weaknesses in this category are related to improper management of system resources. | https://cwe.mitre.org/data/definitions/399.html | 1 | Emese Revfy | 2013-04-17 15:58:36-07:00 | kernel/signal.c: stop info leak via the tkill and the tgkill syscalls
This fixes a kernel memory contents leak via the tkill and tgkill syscalls
for compat processes.
This is visible in the siginfo_t->_sifields._rt.si_sigval.sival_ptr field
when handling signals delivered from tkill.
The place of the infoleak:
int copy_siginfo_to_user32(compat_siginfo_t __user *to, siginfo_t *from)
{
...
put_user_ex(ptr_to_compat(from->si_ptr), &to->si_ptr);
...
}
Signed-off-by: Emese Revfy <[email protected]>
Reviewed-by: PaX Team <[email protected]>
Signed-off-by: Kees Cook <[email protected]>
Cc: Al Viro <[email protected]>
Cc: Oleg Nesterov <[email protected]>
Cc: "Eric W. Biederman" <[email protected]>
Cc: Serge Hallyn <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]> | b9e146d8eb3b9ecae5086d373b50fa0c1f3e7f0f | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | do_tkill | do_tkill( pid_t tgid , pid_t pid , int sig) | ['tgid', 'pid', 'sig'] | static int do_tkill(pid_t tgid, pid_t pid, int sig)
{
struct siginfo info;
info.si_signo = sig;
info.si_errno = 0;
info.si_code = SI_TKILL;
info.si_pid = task_tgid_vnr(current);
info.si_uid = from_kuid_munged(current_user_ns(), current_uid());
return do_send_specific(tgid, pid, sig, &info);
} | 72 | True | 1 |
||
CVE-2013-2596 | True | False | False | False | AV:L/AC:M/Au:N/C:C/I:C/A:C | LOCAL | MEDIUM | NONE | COMPLETE | COMPLETE | COMPLETE | 6.9 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://www.droid-life.com/2013/04/09/root-method-released-for-droid-razr-hd-running-android-4-1-2-other-devices-too/', 'name': 'http://www.droid-life.com/2013/04/09/root-method-released-for-droid-razr-hd-running-android-4-1-2-other-devices-too/', 'refsource': 'MISC', 'tags': ['Exploit']}, {'url': 'http://www.droidrzr.com/index.php/topic/15208-root-motochopper-yet-another-android-root-exploit/', 'name': 'http://www.droidrzr.com/index.php/topic/15208-root-motochopper-yet-another-android-root-exploit/', 'refsource': 'MISC', 'tags': ['Exploit']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=fc9bbca8f650e5f738af8806317c0a041a48ae4a', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=fc9bbca8f650e5f738af8806317c0a041a48ae4a', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Patch']}, {'url': 'https://github.com/torvalds/linux/commit/b4cbb197c7e7a68dbad0d491242e3ca67420c13e', 'name': 'https://github.com/torvalds/linux/commit/b4cbb197c7e7a68dbad0d491242e3ca67420c13e', 'refsource': 'CONFIRM', 'tags': ['Patch']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=b4cbb197c7e7a68dbad0d491242e3ca67420c13e', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=b4cbb197c7e7a68dbad0d491242e3ca67420c13e', 'refsource': 'CONFIRM', 'tags': ['Patch']}, {'url': 'http://forum.xda-developers.com/showthread.php?t=2255491', 'name': 'http://forum.xda-developers.com/showthread.php?t=2255491', 'refsource': 'MISC', 'tags': ['Exploit']}, {'url': 'https://github.com/torvalds/linux/commit/fc9bbca8f650e5f738af8806317c0a041a48ae4a', 'name': 'https://github.com/torvalds/linux/commit/fc9bbca8f650e5f738af8806317c0a041a48ae4a', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Patch']}, {'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.9', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.9', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://marc.info/?l=linux-kernel&m=136616837923938&w=2', 'name': "[linux-kernel] 20130417 Device driver memory 'mmap()' function helper cleanup", 'refsource': 'MLIST', 'tags': ['Patch']}, {'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2013:176', 'name': 'MDVSA-2013:176', 'refsource': 'MANDRIVA', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0695.html', 'name': 'RHSA-2015:0695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0782.html', 'name': 'RHSA-2015:0782', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0803.html', 'name': 'RHSA-2015:0803', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html', 'name': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.securityfocus.com/bid/59264', 'name': '59264', 'refsource': 'BID', 'tags': []}, {'url': 'http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10761', 'name': 'http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10761', 'refsource': 'CONFIRM', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-189'}]}] | MEDIUM | [{'operator': 'AND', 'children': [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.7:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.8.8', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.5:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:motorola:android:4.1.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.4:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:h:motorola:razr_m:-:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:h:qualcomm:msm8960:-:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:h:motorola:atrix_hd:-:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:h:motorola:razr_hd:-:*:*:*:*:*:*:*', 'cpe_name': []}]}], 'cpe_match': []}] | [{'lang': 'en', 'value': 'Integer overflow in the fb_mmap function in drivers/video/fbmem.c in the Linux kernel before 3.8.9, as used in a certain Motorola build of Android 4.1.2 and other products, allows local users to create a read-write memory mapping for the entirety of kernel memory, and consequently gain privileges, via crafted /dev/graphics/fb0 mmap2 system calls, as demonstrated by the Motochopper pwn program.'}] | 2016-12-31T02:59Z | 2013-04-13T02:59Z | Numeric Errors | Weaknesses in this category are related to improper calculation or conversion of numbers. | https://cwe.mitre.org/data/definitions/189.html | 1 | Linus Torvalds | 2013-04-19 09:57:35-07:00 | vm: convert fb_mmap to vm_iomap_memory() helper
This is my example conversion of a few existing mmap users. The
fb_mmap() case is a good example because it is a bit more complicated
than some: fb_mmap() mmaps one of two different memory areas depending
on the page offset of the mmap (but happily there is never any mixing of
the two, so the helper function still works).
Signed-off-by: Linus Torvalds <[email protected]> | fc9bbca8f650e5f738af8806317c0a041a48ae4a | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | fb_mmap | fb_mmap( struct file * file , struct vm_area_struct * vma) | ['file', 'vma'] | fb_mmap(struct file *file, struct vm_area_struct * vma)
{
struct fb_info *info = file_fb_info(file);
struct fb_ops *fb;
unsigned long off;
unsigned long start;
u32 len;
if (!info)
return -ENODEV;
if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
return -EINVAL;
off = vma->vm_pgoff << PAGE_SHIFT;
fb = info->fbops;
if (!fb)
return -ENODEV;
mutex_lock(&info->mm_lock);
if (fb->fb_mmap) {
int res;
res = fb->fb_mmap(info, vma);
mutex_unlock(&info->mm_lock);
return res;
}
/* frame buffer memory */
start = info->fix.smem_start;
len = PAGE_ALIGN((start & ~PAGE_MASK) + info->fix.smem_len);
if (off >= len) {
/* memory mapped io */
off -= len;
if (info->var.accel_flags) {
mutex_unlock(&info->mm_lock);
return -EINVAL;
}
start = info->fix.mmio_start;
len = PAGE_ALIGN((start & ~PAGE_MASK) + info->fix.mmio_len);
}
mutex_unlock(&info->mm_lock);
start &= PAGE_MASK;
if ((vma->vm_end - vma->vm_start + off) > len)
return -EINVAL;
off += start;
vma->vm_pgoff = off >> PAGE_SHIFT;
/* VM_IO | VM_DONTEXPAND | VM_DONTDUMP are set by io_remap_pfn_range()*/
vma->vm_page_prot = vm_get_page_prot(vma->vm_flags);
fb_pgprotect(file, vma, off);
if (io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT,
vma->vm_end - vma->vm_start, vma->vm_page_prot))
return -EAGAIN;
return 0;
} | 315 | True | 1 |
||
CVE-2013-1979 | False | False | False | False | AV:L/AC:M/Au:N/C:C/I:C/A:C | LOCAL | MEDIUM | NONE | COMPLETE | COMPLETE | COMPLETE | 6.9 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=83f1b4ba917db5dc5a061a44b3403ddb6e783494', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=83f1b4ba917db5dc5a061a44b3403ddb6e783494', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=955629', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=955629', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.openwall.com/lists/oss-security/2013/04/29/1', 'name': '[oss-security] 20130428 Multiple Linux setuid output redirection vulnerabilities', 'refsource': 'MLIST', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/83f1b4ba917db5dc5a061a44b3403ddb6e783494', 'name': 'https://github.com/torvalds/linux/commit/83f1b4ba917db5dc5a061a44b3403ddb6e783494', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.11', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.11', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2013:176', 'name': 'MDVSA-2013:176', 'refsource': 'MANDRIVA', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00018.html', 'name': 'openSUSE-SU-2013:1187', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.fedoraproject.org/pipermail/package-announce/2013-April/103750.html', 'name': 'FEDORA-2013-6537', 'refsource': 'FEDORA', 'tags': []}, {'url': 'http://lists.fedoraproject.org/pipermail/package-announce/2013-May/104480.html', 'name': 'FEDORA-2013-6999', 'refsource': 'FEDORA', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-updates/2013-12/msg00129.html', 'name': 'openSUSE-SU-2013:1971', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00006.html', 'name': 'SUSE-SU-2014:1316', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00007.html', 'name': 'SUSE-SU-2014:1319', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00016.html', 'name': 'SUSE-SU-2013:1182', 'refsource': 'SUSE', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.7:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.8.10', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.5:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.8:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.9:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.8.3:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The scm_set_cred function in include/net/scm.h in the Linux kernel before 3.8.11 uses incorrect uid and gid values during credentials passing, which allows local users to gain privileges via a crafted application.'}] | 2017-11-29T02:29Z | 2013-05-03T11:57Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Linus Torvalds | 2013-04-19 15:32:32+00:00 | net: fix incorrect credentials passing
Commit 257b5358b32f ("scm: Capture the full credentials of the scm
sender") changed the credentials passing code to pass in the effective
uid/gid instead of the real uid/gid.
Obviously this doesn't matter most of the time (since normally they are
the same), but it results in differences for suid binaries when the wrong
uid/gid ends up being used.
This just undoes that (presumably unintentional) part of the commit.
Reported-by: Andy Lutomirski <[email protected]>
Cc: Eric W. Biederman <[email protected]>
Cc: Serge E. Hallyn <[email protected]>
Cc: David S. Miller <[email protected]>
Cc: [email protected]
Signed-off-by: Linus Torvalds <[email protected]>
Acked-by: "Eric W. Biederman" <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 83f1b4ba917db5dc5a061a44b3403ddb6e783494 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | scm_set_cred | scm_set_cred( struct scm_cookie * scm , struct pid * pid , const struct cred * cred) | ['scm', 'pid', 'cred'] | static __inline__ void scm_set_cred(struct scm_cookie *scm,
struct pid *pid, const struct cred *cred)
{
scm->pid = get_pid(pid);
scm->cred = cred ? get_cred(cred) : NULL;
scm->creds.pid = pid_vnr(pid);
scm->creds.uid = cred ? cred->euid : INVALID_UID;
scm->creds.gid = cred ? cred->egid : INVALID_GID;
} | 81 | True | 1 |
||
CVE-2016-3070 | False | False | False | False | AV:L/AC:L/Au:N/C:P/I:P/A:P | LOCAL | LOW | NONE | PARTIAL | PARTIAL | PARTIAL | 4.6 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.8 | HIGH | 1.8 | 5.9 | nan | [{'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1308846', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1308846', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking']}, {'url': 'https://security-tracker.debian.org/tracker/CVE-2016-3070', 'name': 'https://security-tracker.debian.org/tracker/CVE-2016-3070', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/42cb14b110a5698ccf26ce59c4441722605a3743', 'name': 'https://github.com/torvalds/linux/commit/42cb14b110a5698ccf26ce59c4441722605a3743', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=42cb14b110a5698ccf26ce59c4441722605a3743', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=42cb14b110a5698ccf26ce59c4441722605a3743', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://www.ubuntu.com/usn/USN-3036-1', 'name': 'USN-3036-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-3035-1', 'name': 'USN-3035-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.debian.org/security/2016/dsa-3607', 'name': 'DSA-3607', 'refsource': 'DEBIAN', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-3035-3', 'name': 'USN-3035-3', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-3035-2', 'name': 'USN-3035-2', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-3034-2', 'name': 'USN-3034-2', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-3037-1', 'name': 'USN-3037-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.securityfocus.com/bid/90518', 'name': '90518', 'refsource': 'BID', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-3034-1', 'name': 'USN-3034-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-476'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.6', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The trace_writeback_dirty_page implementation in include/trace/events/writeback.h in the Linux kernel before 4.4 improperly interacts with mm/migrate.c, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by triggering a certain page move.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | NULL Pointer Dereference | A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. | NULL pointer dereference issues can occur through a number of flaws, including race conditions, and simple programming omissions.
| https://cwe.mitre.org/data/definitions/476.html | 0 | Hugh Dickins | 2015-11-05 18:50:05-08:00 | mm: migrate dirty page without clear_page_dirty_for_io etc
clear_page_dirty_for_io() has accumulated writeback and memcg subtleties
since v2.6.16 first introduced page migration; and the set_page_dirty()
which completed its migration of PageDirty, later had to be moderated to
__set_page_dirty_nobuffers(); then PageSwapBacked had to skip that too.
No actual problems seen with this procedure recently, but if you look into
what the clear_page_dirty_for_io(page)+set_page_dirty(newpage) is actually
achieving, it turns out to be nothing more than moving the PageDirty flag,
and its NR_FILE_DIRTY stat from one zone to another.
It would be good to avoid a pile of irrelevant decrementations and
incrementations, and improper event counting, and unnecessary descent of
the radix_tree under tree_lock (to set the PAGECACHE_TAG_DIRTY which
radix_tree_replace_slot() left in place anyway).
Do the NR_FILE_DIRTY movement, like the other stats movements, while
interrupts still disabled in migrate_page_move_mapping(); and don't even
bother if the zone is the same. Do the PageDirty movement there under
tree_lock too, where old page is frozen and newpage not yet visible:
bearing in mind that as soon as newpage becomes visible in radix_tree, an
un-page-locked set_page_dirty() might interfere (or perhaps that's just
not possible: anything doing so should already hold an additional
reference to the old page, preventing its migration; but play safe).
But we do still need to transfer PageDirty in migrate_page_copy(), for
those who don't go the mapping route through migrate_page_move_mapping().
Signed-off-by: Hugh Dickins <[email protected]>
Cc: Christoph Lameter <[email protected]>
Cc: "Kirill A. Shutemov" <[email protected]>
Cc: Rik van Riel <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Cc: Davidlohr Bueso <[email protected]>
Cc: Oleg Nesterov <[email protected]>
Cc: Sasha Levin <[email protected]>
Cc: Dmitry Vyukov <[email protected]>
Cc: KOSAKI Motohiro <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]> | 42cb14b110a5698ccf26ce59c4441722605a3743 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | migrate_page_copy | migrate_page_copy( struct page * newpage , struct page * page) | ['newpage', 'page'] | void migrate_page_copy(struct page *newpage, struct page *page)
{
int cpupid;
if (PageHuge(page) || PageTransHuge(page))
copy_huge_page(newpage, page);
else
copy_highpage(newpage, page);
if (PageError(page))
SetPageError(newpage);
if (PageReferenced(page))
SetPageReferenced(newpage);
if (PageUptodate(page))
SetPageUptodate(newpage);
if (TestClearPageActive(page)) {
VM_BUG_ON_PAGE(PageUnevictable(page), page);
SetPageActive(newpage);
} else if (TestClearPageUnevictable(page))
SetPageUnevictable(newpage);
if (PageChecked(page))
SetPageChecked(newpage);
if (PageMappedToDisk(page))
SetPageMappedToDisk(newpage);
if (PageDirty(page)) {
clear_page_dirty_for_io(page);
/*
* Want to mark the page and the radix tree as dirty, and
* redo the accounting that clear_page_dirty_for_io undid,
* but we can't use set_page_dirty because that function
* is actually a signal that all of the page has become dirty.
* Whereas only part of our page may be dirty.
*/
if (PageSwapBacked(page))
SetPageDirty(newpage);
else
__set_page_dirty_nobuffers(newpage);
}
if (page_is_young(page))
set_page_young(newpage);
if (page_is_idle(page))
set_page_idle(newpage);
/*
* Copy NUMA information to the new page, to prevent over-eager
* future migrations of this same page.
*/
cpupid = page_cpupid_xchg_last(page, -1);
page_cpupid_xchg_last(newpage, cpupid);
ksm_migrate_page(newpage, page);
/*
* Please do not reorder this without considering how mm/ksm.c's
* get_ksm_page() depends upon ksm_migrate_page() and PageSwapCache().
*/
if (PageSwapCache(page))
ClearPageSwapCache(page);
ClearPagePrivate(page);
set_page_private(page, 0);
/*
* If any waiters have accumulated on the new page then
* wake them up.
*/
if (PageWriteback(newpage))
end_page_writeback(newpage);
} | 257 | True | 1 |
|
CVE-2016-3070 | False | False | False | False | AV:L/AC:L/Au:N/C:P/I:P/A:P | LOCAL | LOW | NONE | PARTIAL | PARTIAL | PARTIAL | 4.6 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.8 | HIGH | 1.8 | 5.9 | nan | [{'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1308846', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1308846', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking']}, {'url': 'https://security-tracker.debian.org/tracker/CVE-2016-3070', 'name': 'https://security-tracker.debian.org/tracker/CVE-2016-3070', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/42cb14b110a5698ccf26ce59c4441722605a3743', 'name': 'https://github.com/torvalds/linux/commit/42cb14b110a5698ccf26ce59c4441722605a3743', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=42cb14b110a5698ccf26ce59c4441722605a3743', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=42cb14b110a5698ccf26ce59c4441722605a3743', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://www.ubuntu.com/usn/USN-3036-1', 'name': 'USN-3036-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-3035-1', 'name': 'USN-3035-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.debian.org/security/2016/dsa-3607', 'name': 'DSA-3607', 'refsource': 'DEBIAN', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-3035-3', 'name': 'USN-3035-3', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-3035-2', 'name': 'USN-3035-2', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-3034-2', 'name': 'USN-3034-2', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-3037-1', 'name': 'USN-3037-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.securityfocus.com/bid/90518', 'name': '90518', 'refsource': 'BID', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-3034-1', 'name': 'USN-3034-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-476'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.6', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The trace_writeback_dirty_page implementation in include/trace/events/writeback.h in the Linux kernel before 4.4 improperly interacts with mm/migrate.c, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by triggering a certain page move.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | NULL Pointer Dereference | A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. | NULL pointer dereference issues can occur through a number of flaws, including race conditions, and simple programming omissions.
| https://cwe.mitre.org/data/definitions/476.html | 0 | Hugh Dickins | 2015-11-05 18:50:05-08:00 | mm: migrate dirty page without clear_page_dirty_for_io etc
clear_page_dirty_for_io() has accumulated writeback and memcg subtleties
since v2.6.16 first introduced page migration; and the set_page_dirty()
which completed its migration of PageDirty, later had to be moderated to
__set_page_dirty_nobuffers(); then PageSwapBacked had to skip that too.
No actual problems seen with this procedure recently, but if you look into
what the clear_page_dirty_for_io(page)+set_page_dirty(newpage) is actually
achieving, it turns out to be nothing more than moving the PageDirty flag,
and its NR_FILE_DIRTY stat from one zone to another.
It would be good to avoid a pile of irrelevant decrementations and
incrementations, and improper event counting, and unnecessary descent of
the radix_tree under tree_lock (to set the PAGECACHE_TAG_DIRTY which
radix_tree_replace_slot() left in place anyway).
Do the NR_FILE_DIRTY movement, like the other stats movements, while
interrupts still disabled in migrate_page_move_mapping(); and don't even
bother if the zone is the same. Do the PageDirty movement there under
tree_lock too, where old page is frozen and newpage not yet visible:
bearing in mind that as soon as newpage becomes visible in radix_tree, an
un-page-locked set_page_dirty() might interfere (or perhaps that's just
not possible: anything doing so should already hold an additional
reference to the old page, preventing its migration; but play safe).
But we do still need to transfer PageDirty in migrate_page_copy(), for
those who don't go the mapping route through migrate_page_move_mapping().
Signed-off-by: Hugh Dickins <[email protected]>
Cc: Christoph Lameter <[email protected]>
Cc: "Kirill A. Shutemov" <[email protected]>
Cc: Rik van Riel <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Cc: Davidlohr Bueso <[email protected]>
Cc: Oleg Nesterov <[email protected]>
Cc: Sasha Levin <[email protected]>
Cc: Dmitry Vyukov <[email protected]>
Cc: KOSAKI Motohiro <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]> | 42cb14b110a5698ccf26ce59c4441722605a3743 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | migrate_page_move_mapping | migrate_page_move_mapping( struct address_space * mapping , struct page * newpage , struct page * page , struct buffer_head * head , enum migrate_mode mode , int extra_count) | ['mapping', 'newpage', 'page', 'head', 'mode', 'extra_count'] | int migrate_page_move_mapping(struct address_space *mapping,
struct page *newpage, struct page *page,
struct buffer_head *head, enum migrate_mode mode,
int extra_count)
{
int expected_count = 1 + extra_count;
void **pslot;
if (!mapping) {
/* Anonymous page without mapping */
if (page_count(page) != expected_count)
return -EAGAIN;
/* No turning back from here */
set_page_memcg(newpage, page_memcg(page));
newpage->index = page->index;
newpage->mapping = page->mapping;
if (PageSwapBacked(page))
SetPageSwapBacked(newpage);
return MIGRATEPAGE_SUCCESS;
}
spin_lock_irq(&mapping->tree_lock);
pslot = radix_tree_lookup_slot(&mapping->page_tree,
page_index(page));
expected_count += 1 + page_has_private(page);
if (page_count(page) != expected_count ||
radix_tree_deref_slot_protected(pslot, &mapping->tree_lock) != page) {
spin_unlock_irq(&mapping->tree_lock);
return -EAGAIN;
}
if (!page_freeze_refs(page, expected_count)) {
spin_unlock_irq(&mapping->tree_lock);
return -EAGAIN;
}
/*
* In the async migration case of moving a page with buffers, lock the
* buffers using trylock before the mapping is moved. If the mapping
* was moved, we later failed to lock the buffers and could not move
* the mapping back due to an elevated page count, we would have to
* block waiting on other references to be dropped.
*/
if (mode == MIGRATE_ASYNC && head &&
!buffer_migrate_lock_buffers(head, mode)) {
page_unfreeze_refs(page, expected_count);
spin_unlock_irq(&mapping->tree_lock);
return -EAGAIN;
}
/*
* Now we know that no one else is looking at the page:
* no turning back from here.
*/
set_page_memcg(newpage, page_memcg(page));
newpage->index = page->index;
newpage->mapping = page->mapping;
if (PageSwapBacked(page))
SetPageSwapBacked(newpage);
get_page(newpage); /* add cache reference */
if (PageSwapCache(page)) {
SetPageSwapCache(newpage);
set_page_private(newpage, page_private(page));
}
radix_tree_replace_slot(pslot, newpage);
/*
* Drop cache reference from old page by unfreezing
* to one less reference.
* We know this isn't the last reference.
*/
page_unfreeze_refs(page, expected_count - 1);
/*
* If moved to a different zone then also account
* the page for that zone. Other VM counters will be
* taken care of when we establish references to the
* new page and drop references to the old page.
*
* Note that anonymous pages are accounted for
* via NR_FILE_PAGES and NR_ANON_PAGES if they
* are mapped to swap space.
*/
__dec_zone_page_state(page, NR_FILE_PAGES);
__inc_zone_page_state(newpage, NR_FILE_PAGES);
if (!PageSwapCache(page) && PageSwapBacked(page)) {
__dec_zone_page_state(page, NR_SHMEM);
__inc_zone_page_state(newpage, NR_SHMEM);
}
spin_unlock_irq(&mapping->tree_lock);
return MIGRATEPAGE_SUCCESS;
} | 368 | True | 1 |
|
CVE-2015-8785 | False | False | False | False | AV:L/AC:L/Au:N/C:N/I:N/A:C | LOCAL | LOW | NONE | NONE | NONE | COMPLETE | 4.9 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | LOCAL | LOW | NONE | NONE | UNCHANGED | NONE | NONE | HIGH | 6.2 | MEDIUM | 2.5 | 3.6 | nan | [{'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3ca8138f014a913f98e6ef40e939868e1e9ea876', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3ca8138f014a913f98e6ef40e939868e1e9ea876', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Vendor Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2016/01/24/1', 'name': '[oss-security] 20160124 CVE Request: Linux: fuse: possible denial of service in fuse_fill_write_pages()', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1290642', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1290642', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking']}, {'url': 'https://github.com/torvalds/linux/commit/3ca8138f014a913f98e6ef40e939868e1e9ea876', 'name': 'https://github.com/torvalds/linux/commit/3ca8138f014a913f98e6ef40e939868e1e9ea876', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Vendor Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.html', 'name': 'SUSE-SU-2016:1764', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html', 'name': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html', 'name': 'http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html', 'name': 'SUSE-SU-2016:2074', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/81688', 'name': '81688', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://www.debian.org/security/2016/dsa-3503', 'name': 'DSA-3503', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00015.html', 'name': 'openSUSE-SU-2016:1008', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.html', 'name': 'SUSE-SU-2016:0911', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html', 'name': 'SUSE-SU-2016:1102', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2886-1', 'name': 'USN-2886-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'CWE-835'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.4:rc4:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.4:rc3:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.4:rc2:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.4:rc1:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndExcluding': '4.4', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:linux_enterprise_real_time_extension:12:sp1:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The fuse_fill_write_pages function in fs/fuse/file.c in the Linux kernel before 4.4 allows local users to cause a denial of service (infinite loop) via a writev system call that triggers a zero length for the first segment of an iov.'}] | 2022-01-31T17:52Z | 2016-02-08T03:59Z | Loop with Unreachable Exit Condition ('Infinite Loop') | The program contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop. | If the loop can be influenced by an attacker, this weakness could allow attackers to consume excessive resources such as CPU or memory.
| https://cwe.mitre.org/data/definitions/835.html | 0 | Roman Gushchin | 2015-10-12 16:33:44+03:00 | fuse: break infinite loop in fuse_fill_write_pages()
I got a report about unkillable task eating CPU. Further
investigation shows, that the problem is in the fuse_fill_write_pages()
function. If iov's first segment has zero length, we get an infinite
loop, because we never reach iov_iter_advance() call.
Fix this by calling iov_iter_advance() before repeating an attempt to
copy data from userspace.
A similar problem is described in 124d3b7041f ("fix writev regression:
pan hanging unkillable and un-straceable"). If zero-length segmend
is followed by segment with invalid address,
iov_iter_fault_in_readable() checks only first segment (zero-length),
iov_iter_copy_from_user_atomic() skips it, fails at second and
returns zero -> goto again without skipping zero-length segment.
Patch calls iov_iter_advance() before goto again: we'll skip zero-length
segment at second iteraction and iov_iter_fault_in_readable() will detect
invalid address.
Special thanks to Konstantin Khlebnikov, who helped a lot with the commit
description.
Cc: Andrew Morton <[email protected]>
Cc: Maxim Patlasov <[email protected]>
Cc: Konstantin Khlebnikov <[email protected]>
Signed-off-by: Roman Gushchin <[email protected]>
Signed-off-by: Miklos Szeredi <[email protected]>
Fixes: ea9b9907b82a ("fuse: implement perform_write")
Cc: <[email protected]> | 3ca8138f014a913f98e6ef40e939868e1e9ea876 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | fuse_fill_write_pages | fuse_fill_write_pages( struct fuse_req * req , struct address_space * mapping , struct iov_iter * ii , loff_t pos) | ['req', 'mapping', 'ii', 'pos'] | static ssize_t fuse_fill_write_pages(struct fuse_req *req,
struct address_space *mapping,
struct iov_iter *ii, loff_t pos)
{
struct fuse_conn *fc = get_fuse_conn(mapping->host);
unsigned offset = pos & (PAGE_CACHE_SIZE - 1);
size_t count = 0;
int err;
req->in.argpages = 1;
req->page_descs[0].offset = offset;
do {
size_t tmp;
struct page *page;
pgoff_t index = pos >> PAGE_CACHE_SHIFT;
size_t bytes = min_t(size_t, PAGE_CACHE_SIZE - offset,
iov_iter_count(ii));
bytes = min_t(size_t, bytes, fc->max_write - count);
again:
err = -EFAULT;
if (iov_iter_fault_in_readable(ii, bytes))
break;
err = -ENOMEM;
page = grab_cache_page_write_begin(mapping, index, 0);
if (!page)
break;
if (mapping_writably_mapped(mapping))
flush_dcache_page(page);
tmp = iov_iter_copy_from_user_atomic(page, ii, offset, bytes);
flush_dcache_page(page);
if (!tmp) {
unlock_page(page);
page_cache_release(page);
bytes = min(bytes, iov_iter_single_seg_count(ii));
goto again;
}
err = 0;
req->pages[req->num_pages] = page;
req->page_descs[req->num_pages].length = tmp;
req->num_pages++;
iov_iter_advance(ii, tmp);
count += tmp;
pos += tmp;
offset += tmp;
if (offset == PAGE_CACHE_SIZE)
offset = 0;
if (!fc->big_writes)
break;
} while (iov_iter_count(ii) && count < fc->max_write &&
req->num_pages < req->max_pages && offset == 0);
return count > 0 ? count : err;
} | 332 | True | 1 |
|
CVE-2015-5307 | False | False | False | False | AV:L/AC:L/Au:N/C:N/I:N/A:C | LOCAL | LOW | NONE | NONE | NONE | COMPLETE | 4.9 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | False | [{'url': 'http://www.openwall.com/lists/oss-security/2015/11/10/6', 'name': '[oss-security] 20151110 Re: CVE-2015-5307 kernel: kvm: guest to host DoS by triggering an infinite loop in microcode via #AC exception', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=54a20552e1eae07aa240fa370a0293e006b5faed', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=54a20552e1eae07aa240fa370a0293e006b5faed', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1277172', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1277172', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/54a20552e1eae07aa240fa370a0293e006b5faed', 'name': 'https://github.com/torvalds/linux/commit/54a20552e1eae07aa240fa370a0293e006b5faed', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://xenbits.xen.org/xsa/advisory-156.html', 'name': 'http://xenbits.xen.org/xsa/advisory-156.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html', 'name': 'http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html', 'name': 'http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html', 'name': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'name': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html', 'name': 'SUSE-SU-2016:2074', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/77528', 'name': '77528', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0046.html', 'name': 'RHSA-2016:0046', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00013.html', 'name': 'SUSE-SU-2016:0354', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.fedoraproject.org/pipermail/package-announce/2015-November/172435.html', 'name': 'FEDORA-2015-394835a3f6', 'refsource': 'FEDORA', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00035.html', 'name': 'SUSE-SU-2015:2108', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2805-1', 'name': 'USN-2805-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.debian.org/security/2015/dsa-3396', 'name': 'DSA-3396', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00005.html', 'name': 'SUSE-SU-2015:2194', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2802-1', 'name': 'USN-2802-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00026.html', 'name': 'SUSE-SU-2015:2339', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.securitytracker.com/id/1034105', 'name': '1034105', 'refsource': 'SECTRACK', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://www.debian.org/security/2016/dsa-3454', 'name': 'DSA-3454', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-2636.html', 'name': 'RHSA-2015:2636', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://support.citrix.com/article/CTX202583', 'name': 'http://support.citrix.com/article/CTX202583', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-updates/2015-12/msg00039.html', 'name': 'openSUSE-SU-2015:2232', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.fedoraproject.org/pipermail/package-announce/2015-November/172300.html', 'name': 'FEDORA-2015-668d213dc3', 'refsource': 'FEDORA', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.debian.org/security/2015/dsa-3414', 'name': 'DSA-3414', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2801-1', 'name': 'USN-2801-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2804-1', 'name': 'USN-2804-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.fedoraproject.org/pipermail/package-announce/2015-November/172187.html', 'name': 'FEDORA-2015-f150b2a8c8', 'refsource': 'FEDORA', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2807-1', 'name': 'USN-2807-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00031.html', 'name': 'SUSE-SU-2015:2350', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2806-1', 'name': 'USN-2806-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2800-1', 'name': 'USN-2800-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-updates/2015-12/msg00053.html', 'name': 'openSUSE-SU-2015:2250', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-2645.html', 'name': 'RHSA-2015:2645', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2803-1', 'name': 'USN-2803-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'https://kb.juniper.net/JSA10783', 'name': 'https://kb.juniper.net/JSA10783', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'CWE-399'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.2.3', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.3.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.6.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.5.5:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.6.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.3.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.6.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.3.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.6.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.5.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.4.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.4.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.4.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.4.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.3.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.5.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.5.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.6.5:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.3.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.6.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.6.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.4.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.5.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:a:oracle:vm_virtualbox:*:*:*:*:*:*:*:*', 'versionStartIncluding': '4.0.0', 'versionEndIncluding': '4.0.34', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:a:oracle:vm_virtualbox:*:*:*:*:*:*:*:*', 'versionStartIncluding': '4.1.0', 'versionEndIncluding': '4.1.42', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:a:oracle:vm_virtualbox:*:*:*:*:*:*:*:*', 'versionStartIncluding': '4.2.0', 'versionEndIncluding': '4.2.34', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:a:oracle:vm_virtualbox:*:*:*:*:*:*:*:*', 'versionStartIncluding': '4.3.0', 'versionEndIncluding': '4.3.29', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:a:oracle:vm_virtualbox:*:*:*:*:*:*:*:*', 'versionStartIncluding': '5.0.0', 'versionEndIncluding': '5.0.8', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a denial of service (host OS panic or hang) by triggering many #AC (aka Alignment Check) exceptions, related to svm.c and vmx.c.'}] | 2019-02-12T19:04Z | 2015-11-16T11:59Z | Resource Management Errors | Weaknesses in this category are related to improper management of system resources. | https://cwe.mitre.org/data/definitions/399.html | 1 | Eric Northup | 2015-11-03 18:03:53+01:00 | KVM: x86: work around infinite loop in microcode when #AC is delivered
It was found that a guest can DoS a host by triggering an infinite
stream of "alignment check" (#AC) exceptions. This causes the
microcode to enter an infinite loop where the core never receives
another interrupt. The host kernel panics pretty quickly due to the
effects (CVE-2015-5307).
Signed-off-by: Eric Northup <[email protected]>
Cc: [email protected]
Signed-off-by: Paolo Bonzini <[email protected]> | 54a20552e1eae07aa240fa370a0293e006b5faed | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | update_exception_bitmap | update_exception_bitmap( struct kvm_vcpu * vcpu) | ['vcpu'] | static void update_exception_bitmap(struct kvm_vcpu *vcpu)
{
u32 eb;
eb = (1u << PF_VECTOR) | (1u << UD_VECTOR) | (1u << MC_VECTOR) |
(1u << NM_VECTOR) | (1u << DB_VECTOR);
if ((vcpu->guest_debug &
(KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_SW_BP)) ==
(KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_SW_BP))
eb |= 1u << BP_VECTOR;
if (to_vmx(vcpu)->rmode.vm86_active)
eb = ~0;
if (enable_ept)
eb &= ~(1u << PF_VECTOR); /* bypass_guest_pf = 0 */
if (vcpu->fpu_active)
eb &= ~(1u << NM_VECTOR);
/* When we are running a nested L2 guest and L1 specified for it a
* certain exception bitmap, we must trap the same exceptions and pass
* them to L1. When running L2, we will only handle the exceptions
* specified above if L1 did not want them.
*/
if (is_guest_mode(vcpu))
eb |= get_vmcs12(vcpu)->exception_bitmap;
vmcs_write32(EXCEPTION_BITMAP, eb);
} | 142 | True | 1 |
||
CVE-2015-8104 | False | False | False | False | AV:L/AC:M/Au:N/C:N/I:N/A:C | LOCAL | MEDIUM | NONE | NONE | NONE | COMPLETE | 4.7 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | False | [{'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cbdb967af3d54993f5814f1cee0ed311a055377d', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cbdb967af3d54993f5814f1cee0ed311a055377d', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Issue Tracking', 'Vendor Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2015/11/10/5', 'name': '[oss-security] 20151110 CVE-2015-8104 kernel: kvm: guest to host DoS by triggering an infinite loop in microcode via #DB exception', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1278496', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1278496', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Vendor Advisory']}, {'url': 'http://xenbits.xen.org/xsa/advisory-156.html', 'name': 'http://xenbits.xen.org/xsa/advisory-156.html', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/cbdb967af3d54993f5814f1cee0ed311a055377d', 'name': 'https://github.com/torvalds/linux/commit/cbdb967af3d54993f5814f1cee0ed311a055377d', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Issue Tracking', 'Vendor Advisory']}, {'url': 'http://support.citrix.com/article/CTX203879', 'name': 'http://support.citrix.com/article/CTX203879', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html', 'name': 'http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html', 'name': 'http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/91787', 'name': '91787', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html', 'name': 'http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html', 'name': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'name': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/77524', 'name': '77524', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html', 'name': 'SUSE-SU-2016:2074', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00015.html', 'name': 'openSUSE-SU-2016:1008', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0046.html', 'name': 'RHSA-2016:0046', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00013.html', 'name': 'SUSE-SU-2016:0354', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2843-1', 'name': 'USN-2843-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.fedoraproject.org/pipermail/package-announce/2015-November/172435.html', 'name': 'FEDORA-2015-394835a3f6', 'refsource': 'FEDORA', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00035.html', 'name': 'SUSE-SU-2015:2108', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00005.html', 'name': 'SUSE-SU-2015:2194', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00026.html', 'name': 'SUSE-SU-2015:2339', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.securitytracker.com/id/1034105', 'name': '1034105', 'refsource': 'SECTRACK', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://www.ubuntu.com/usn/USN-2841-1', 'name': 'USN-2841-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.debian.org/security/2016/dsa-3454', 'name': 'DSA-3454', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-2636.html', 'name': 'RHSA-2015:2636', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2843-2', 'name': 'USN-2843-2', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://support.citrix.com/article/CTX202583', 'name': 'http://support.citrix.com/article/CTX202583', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://www.debian.org/security/2015/dsa-3426', 'name': 'DSA-3426', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-updates/2015-12/msg00039.html', 'name': 'openSUSE-SU-2015:2232', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.fedoraproject.org/pipermail/package-announce/2015-November/172300.html', 'name': 'FEDORA-2015-668d213dc3', 'refsource': 'FEDORA', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.debian.org/security/2015/dsa-3414', 'name': 'DSA-3414', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.fedoraproject.org/pipermail/package-announce/2015-November/172187.html', 'name': 'FEDORA-2015-f150b2a8c8', 'refsource': 'FEDORA', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2842-1', 'name': 'USN-2842-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2844-1', 'name': 'USN-2844-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00031.html', 'name': 'SUSE-SU-2015:2350', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2842-2', 'name': 'USN-2842-2', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2841-2', 'name': 'USN-2841-2', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-updates/2015-12/msg00053.html', 'name': 'openSUSE-SU-2015:2250', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-2645.html', 'name': 'RHSA-2015:2645', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2840-1', 'name': 'USN-2840-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'https://kb.juniper.net/JSA10783', 'name': 'https://kb.juniper.net/JSA10783', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'CWE-399'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.3.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.6.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.3.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.6.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.3.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.5.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.4.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.4.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.6.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.3.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.4.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.5.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.6.5:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.6.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.3.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.4.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.5.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:solaris:11.3:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:a:oracle:vm_virtualbox:*:*:*:*:*:*:*:*', 'versionStartIncluding': '4.0.0', 'versionEndIncluding': '4.0.34', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:a:oracle:vm_virtualbox:*:*:*:*:*:*:*:*', 'versionStartIncluding': '4.1.0', 'versionEndIncluding': '4.1.42', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:a:oracle:vm_virtualbox:*:*:*:*:*:*:*:*', 'versionStartIncluding': '4.2.0', 'versionEndIncluding': '4.2.34', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:a:oracle:vm_virtualbox:*:*:*:*:*:*:*:*', 'versionStartIncluding': '4.3.0', 'versionEndIncluding': '4.3.35', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:a:oracle:vm_virtualbox:*:*:*:*:*:*:*:*', 'versionStartIncluding': '5.0.0', 'versionEndIncluding': '5.0.13', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.2.3', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a denial of service (host OS panic or hang) by triggering many #DB (aka Debug) exceptions, related to svm.c.'}] | 2019-02-13T20:52Z | 2015-11-16T11:59Z | Resource Management Errors | Weaknesses in this category are related to improper management of system resources. | https://cwe.mitre.org/data/definitions/399.html | 1 | Paolo Bonzini | 2015-11-10 09:14:39+01:00 | KVM: svm: unconditionally intercept #DB
This is needed to avoid the possibility that the guest triggers
an infinite stream of #DB exceptions (CVE-2015-8104).
VMX is not affected: because it does not save DR6 in the VMCS,
it already intercepts #DB unconditionally.
Reported-by: Jan Beulich <[email protected]>
Cc: [email protected]
Signed-off-by: Paolo Bonzini <[email protected]> | cbdb967af3d54993f5814f1cee0ed311a055377d | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | db_interception | db_interception( struct vcpu_svm * svm) | ['svm'] | static int db_interception(struct vcpu_svm *svm)
{
struct kvm_run *kvm_run = svm->vcpu.run;
if (!(svm->vcpu.guest_debug &
(KVM_GUESTDBG_SINGLESTEP | KVM_GUESTDBG_USE_HW_BP)) &&
!svm->nmi_singlestep) {
kvm_queue_exception(&svm->vcpu, DB_VECTOR);
return 1;
}
if (svm->nmi_singlestep) {
svm->nmi_singlestep = false;
if (!(svm->vcpu.guest_debug & KVM_GUESTDBG_SINGLESTEP))
svm->vmcb->save.rflags &=
~(X86_EFLAGS_TF | X86_EFLAGS_RF);
update_db_bp_intercept(&svm->vcpu);
}
if (svm->vcpu.guest_debug &
(KVM_GUESTDBG_SINGLESTEP | KVM_GUESTDBG_USE_HW_BP)) {
kvm_run->exit_reason = KVM_EXIT_DEBUG;
kvm_run->debug.arch.pc =
svm->vmcb->save.cs.base + svm->vmcb->save.rip;
kvm_run->debug.arch.exception = DB_VECTOR;
return 0;
}
return 1;
} | 170 | True | 1 |
||
CVE-2015-8104 | False | False | False | False | AV:L/AC:M/Au:N/C:N/I:N/A:C | LOCAL | MEDIUM | NONE | NONE | NONE | COMPLETE | 4.7 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | False | [{'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cbdb967af3d54993f5814f1cee0ed311a055377d', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cbdb967af3d54993f5814f1cee0ed311a055377d', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Issue Tracking', 'Vendor Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2015/11/10/5', 'name': '[oss-security] 20151110 CVE-2015-8104 kernel: kvm: guest to host DoS by triggering an infinite loop in microcode via #DB exception', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1278496', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1278496', 'refsource': 'CONFIRM', 'tags': ['Issue 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'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.debian.org/security/2016/dsa-3454', 'name': 'DSA-3454', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-2636.html', 'name': 'RHSA-2015:2636', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2843-2', 'name': 'USN-2843-2', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://support.citrix.com/article/CTX202583', 'name': 'http://support.citrix.com/article/CTX202583', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://www.debian.org/security/2015/dsa-3426', 'name': 'DSA-3426', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-updates/2015-12/msg00039.html', 'name': 'openSUSE-SU-2015:2232', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 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'http://www.ubuntu.com/usn/USN-2842-2', 'name': 'USN-2842-2', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2841-2', 'name': 'USN-2841-2', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-updates/2015-12/msg00053.html', 'name': 'openSUSE-SU-2015:2250', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-2645.html', 'name': 'RHSA-2015:2645', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2840-1', 'name': 'USN-2840-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'https://kb.juniper.net/JSA10783', 'name': 'https://kb.juniper.net/JSA10783', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'CWE-399'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.3.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.6.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.3.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.6.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.3.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.5.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.4.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.4.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.6.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.3.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.4.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.5.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.6.5:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.6.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.3.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.4.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.5.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:solaris:11.3:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:a:oracle:vm_virtualbox:*:*:*:*:*:*:*:*', 'versionStartIncluding': '4.0.0', 'versionEndIncluding': '4.0.34', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:a:oracle:vm_virtualbox:*:*:*:*:*:*:*:*', 'versionStartIncluding': '4.1.0', 'versionEndIncluding': '4.1.42', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:a:oracle:vm_virtualbox:*:*:*:*:*:*:*:*', 'versionStartIncluding': '4.2.0', 'versionEndIncluding': '4.2.34', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:a:oracle:vm_virtualbox:*:*:*:*:*:*:*:*', 'versionStartIncluding': '4.3.0', 'versionEndIncluding': '4.3.35', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:a:oracle:vm_virtualbox:*:*:*:*:*:*:*:*', 'versionStartIncluding': '5.0.0', 'versionEndIncluding': '5.0.13', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.2.3', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a denial of service (host OS panic or hang) by triggering many #DB (aka Debug) exceptions, related to svm.c.'}] | 2019-02-13T20:52Z | 2015-11-16T11:59Z | Resource Management Errors | Weaknesses in this category are related to improper management of system resources. | https://cwe.mitre.org/data/definitions/399.html | 1 | Paolo Bonzini | 2015-11-10 09:14:39+01:00 | KVM: svm: unconditionally intercept #DB
This is needed to avoid the possibility that the guest triggers
an infinite stream of #DB exceptions (CVE-2015-8104).
VMX is not affected: because it does not save DR6 in the VMCS,
it already intercepts #DB unconditionally.
Reported-by: Jan Beulich <[email protected]>
Cc: [email protected]
Signed-off-by: Paolo Bonzini <[email protected]> | cbdb967af3d54993f5814f1cee0ed311a055377d | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | enable_nmi_window | enable_nmi_window( struct kvm_vcpu * vcpu) | ['vcpu'] | static void enable_nmi_window(struct kvm_vcpu *vcpu)
{
struct vcpu_svm *svm = to_svm(vcpu);
if ((svm->vcpu.arch.hflags & (HF_NMI_MASK | HF_IRET_MASK))
== HF_NMI_MASK)
return; /* IRET will cause a vm exit */
/*
* Something prevents NMI from been injected. Single step over possible
* problem (IRET or exception injection or interrupt shadow)
*/
svm->nmi_singlestep = true;
svm->vmcb->save.rflags |= (X86_EFLAGS_TF | X86_EFLAGS_RF);
update_db_bp_intercept(vcpu);
} | 66 | True | 1 |
||
CVE-2015-8104 | False | False | False | False | AV:L/AC:M/Au:N/C:N/I:N/A:C | LOCAL | MEDIUM | NONE | NONE | NONE | COMPLETE | 4.7 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | False | [{'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cbdb967af3d54993f5814f1cee0ed311a055377d', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cbdb967af3d54993f5814f1cee0ed311a055377d', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Issue Tracking', 'Vendor Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2015/11/10/5', 'name': '[oss-security] 20151110 CVE-2015-8104 kernel: kvm: guest to host DoS by triggering an infinite loop in microcode via #DB exception', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1278496', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1278496', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Vendor Advisory']}, {'url': 'http://xenbits.xen.org/xsa/advisory-156.html', 'name': 'http://xenbits.xen.org/xsa/advisory-156.html', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/cbdb967af3d54993f5814f1cee0ed311a055377d', 'name': 'https://github.com/torvalds/linux/commit/cbdb967af3d54993f5814f1cee0ed311a055377d', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Issue Tracking', 'Vendor Advisory']}, {'url': 'http://support.citrix.com/article/CTX203879', 'name': 'http://support.citrix.com/article/CTX203879', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html', 'name': 'http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html', 'name': 'http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/91787', 'name': '91787', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html', 'name': 'http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html', 'name': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'name': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/77524', 'name': '77524', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html', 'name': 'SUSE-SU-2016:2074', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00015.html', 'name': 'openSUSE-SU-2016:1008', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0046.html', 'name': 'RHSA-2016:0046', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00013.html', 'name': 'SUSE-SU-2016:0354', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2843-1', 'name': 'USN-2843-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.fedoraproject.org/pipermail/package-announce/2015-November/172435.html', 'name': 'FEDORA-2015-394835a3f6', 'refsource': 'FEDORA', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00035.html', 'name': 'SUSE-SU-2015:2108', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00005.html', 'name': 'SUSE-SU-2015:2194', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00026.html', 'name': 'SUSE-SU-2015:2339', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.securitytracker.com/id/1034105', 'name': '1034105', 'refsource': 'SECTRACK', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://www.ubuntu.com/usn/USN-2841-1', 'name': 'USN-2841-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.debian.org/security/2016/dsa-3454', 'name': 'DSA-3454', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-2636.html', 'name': 'RHSA-2015:2636', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2843-2', 'name': 'USN-2843-2', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://support.citrix.com/article/CTX202583', 'name': 'http://support.citrix.com/article/CTX202583', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://www.debian.org/security/2015/dsa-3426', 'name': 'DSA-3426', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-updates/2015-12/msg00039.html', 'name': 'openSUSE-SU-2015:2232', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.fedoraproject.org/pipermail/package-announce/2015-November/172300.html', 'name': 'FEDORA-2015-668d213dc3', 'refsource': 'FEDORA', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.debian.org/security/2015/dsa-3414', 'name': 'DSA-3414', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.fedoraproject.org/pipermail/package-announce/2015-November/172187.html', 'name': 'FEDORA-2015-f150b2a8c8', 'refsource': 'FEDORA', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2842-1', 'name': 'USN-2842-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2844-1', 'name': 'USN-2844-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00031.html', 'name': 'SUSE-SU-2015:2350', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2842-2', 'name': 'USN-2842-2', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2841-2', 'name': 'USN-2841-2', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-updates/2015-12/msg00053.html', 'name': 'openSUSE-SU-2015:2250', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-2645.html', 'name': 'RHSA-2015:2645', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2840-1', 'name': 'USN-2840-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'https://kb.juniper.net/JSA10783', 'name': 'https://kb.juniper.net/JSA10783', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'CWE-399'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.3.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.6.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.3.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.6.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.3.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.5.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.4.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.4.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.6.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.3.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.4.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.5.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.6.5:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.6.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.3.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.4.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:xen:xen:4.5.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:solaris:11.3:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:a:oracle:vm_virtualbox:*:*:*:*:*:*:*:*', 'versionStartIncluding': '4.0.0', 'versionEndIncluding': '4.0.34', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:a:oracle:vm_virtualbox:*:*:*:*:*:*:*:*', 'versionStartIncluding': '4.1.0', 'versionEndIncluding': '4.1.42', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:a:oracle:vm_virtualbox:*:*:*:*:*:*:*:*', 'versionStartIncluding': '4.2.0', 'versionEndIncluding': '4.2.34', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:a:oracle:vm_virtualbox:*:*:*:*:*:*:*:*', 'versionStartIncluding': '4.3.0', 'versionEndIncluding': '4.3.35', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:a:oracle:vm_virtualbox:*:*:*:*:*:*:*:*', 'versionStartIncluding': '5.0.0', 'versionEndIncluding': '5.0.13', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.2.3', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a denial of service (host OS panic or hang) by triggering many #DB (aka Debug) exceptions, related to svm.c.'}] | 2019-02-13T20:52Z | 2015-11-16T11:59Z | Resource Management Errors | Weaknesses in this category are related to improper management of system resources. | https://cwe.mitre.org/data/definitions/399.html | 1 | Paolo Bonzini | 2015-11-10 09:14:39+01:00 | KVM: svm: unconditionally intercept #DB
This is needed to avoid the possibility that the guest triggers
an infinite stream of #DB exceptions (CVE-2015-8104).
VMX is not affected: because it does not save DR6 in the VMCS,
it already intercepts #DB unconditionally.
Reported-by: Jan Beulich <[email protected]>
Cc: [email protected]
Signed-off-by: Paolo Bonzini <[email protected]> | cbdb967af3d54993f5814f1cee0ed311a055377d | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | update_db_bp_intercept | update_db_bp_intercept( struct kvm_vcpu * vcpu) | ['vcpu'] | static void update_db_bp_intercept(struct kvm_vcpu *vcpu)
{
struct vcpu_svm *svm = to_svm(vcpu);
clr_exception_intercept(svm, DB_VECTOR);
clr_exception_intercept(svm, BP_VECTOR);
if (svm->nmi_singlestep)
set_exception_intercept(svm, DB_VECTOR);
if (vcpu->guest_debug & KVM_GUESTDBG_ENABLE) {
if (vcpu->guest_debug &
(KVM_GUESTDBG_SINGLESTEP | KVM_GUESTDBG_USE_HW_BP))
set_exception_intercept(svm, DB_VECTOR);
if (vcpu->guest_debug & KVM_GUESTDBG_USE_SW_BP)
set_exception_intercept(svm, BP_VECTOR);
} else
vcpu->guest_debug = 0;
} | 97 | True | 1 |
||
CVE-2015-8844 | False | False | False | True | AV:L/AC:M/Au:N/C:N/I:N/A:C | LOCAL | MEDIUM | NONE | NONE | NONE | COMPLETE | 4.7 | CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H | LOCAL | LOW | NONE | REQUIRED | UNCHANGED | NONE | NONE | HIGH | 5.5 | MEDIUM | 1.8 | 3.6 | nan | [{'url': 'http://www.openwall.com/lists/oss-security/2016/04/13/1', 'name': '[oss-security] 20160413 CVE Request: Linux kernel: incorrect restoration of machine specific registers from signal handler.', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d2b9d2a5ad5ef04ff978c9923d19730cb05efd55', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d2b9d2a5ad5ef04ff978c9923d19730cb05efd55', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.5', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.5', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1326540', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1326540', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/d2b9d2a5ad5ef04ff978c9923d19730cb05efd55', 'name': 'https://github.com/torvalds/linux/commit/d2b9d2a5ad5ef04ff978c9923d19730cb05efd55', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.securitytracker.com/id/1035594', 'name': '1035594', 'refsource': 'SECTRACK', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-20'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.4', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The signal implementation in the Linux kernel before 4.3.5 on powerpc platforms does not check for an MSR with both the S and T bits set, which allows local users to cause a denial of service (TM Bad Thing exception and panic) via a crafted application.'}] | 2018-01-05T02:30Z | 2016-04-27T17:59Z | Improper Input Validation | The product receives input or data, but it does
not validate or incorrectly validates that the input has the
properties that are required to process the data safely and
correctly. |
Input validation is a frequently-used technique
for checking potentially dangerous inputs in order to
ensure that the inputs are safe for processing within the
code, or when communicating with other components. When
software does not validate input properly, an attacker is
able to craft the input in a form that is not expected by
the rest of the application. This will lead to parts of the
system receiving unintended input, which may result in
altered control flow, arbitrary control of a resource, or
arbitrary code execution.
Input validation is not the only technique for
processing input, however. Other techniques attempt to
transform potentially-dangerous input into something safe, such
as filtering (CWE-790) - which attempts to remove dangerous
inputs - or encoding/escaping (CWE-116), which attempts to
ensure that the input is not misinterpreted when it is included
in output to another component. Other techniques exist as well
(see CWE-138 for more examples.)
Input validation can be applied to:
raw data - strings, numbers, parameters, file contents, etc.
metadata - information about the raw data, such as headers or size
Data can be simple or structured. Structured data
can be composed of many nested layers, composed of
combinations of metadata and raw data, with other simple or
structured data.
Many properties of raw data or metadata may need
to be validated upon entry into the code, such
as:
specified quantities such as size, length, frequency, price, rate, number of operations, time, etc.
implied or derived quantities, such as the actual size of a file instead of a specified size
indexes, offsets, or positions into more complex data structures
symbolic keys or other elements into hash tables, associative arrays, etc.
well-formedness, i.e. syntactic correctness - compliance with expected syntax
lexical token correctness - compliance with rules for what is treated as a token
specified or derived type - the actual type of the input (or what the input appears to be)
consistency - between individual data elements, between raw data and metadata, between references, etc.
conformance to domain-specific rules, e.g. business logic
equivalence - ensuring that equivalent inputs are treated the same
authenticity, ownership, or other attestations about the input, e.g. a cryptographic signature to prove the source of the data
Implied or derived properties of data must often
be calculated or inferred by the code itself. Errors in
deriving properties may be considered a contributing factor
to improper input validation.
Note that "input validation" has very different
meanings to different people, or within different
classification schemes. Caution must be used when
referencing this CWE entry or mapping to it. For example,
some weaknesses might involve inadvertently giving control
to an attacker over an input when they should not be able
to provide an input at all, but sometimes this is referred
to as input validation.
Finally, it is important to emphasize that the
distinctions between input validation and output escaping
are often blurred, and developers must be careful to
understand the difference, including how input validation
is not always sufficient to prevent vulnerabilities,
especially when less stringent data types must be
supported, such as free-form text. Consider a SQL injection
scenario in which a person's last name is inserted into a
query. The name "O'Reilly" would likely pass the validation
step since it is a common last name in the English
language. However, this valid name cannot be directly
inserted into the database because it contains the "'"
apostrophe character, which would need to be escaped or
otherwise transformed. In this case, removing the
apostrophe might reduce the risk of SQL injection, but it
would produce incorrect behavior because the wrong name
would be recorded.
| https://cwe.mitre.org/data/definitions/20.html | 0 | Michael Neuling | 2015-11-19 15:44:44+11:00 | powerpc/tm: Block signal return setting invalid MSR state
Currently we allow both the MSR T and S bits to be set by userspace on
a signal return. Unfortunately this is a reserved configuration and
will cause a TM Bad Thing exception if attempted (via rfid).
This patch checks for this case in both the 32 and 64 bit signals
code. If both T and S are set, we mark the context as invalid.
Found using a syscall fuzzer.
Fixes: 2b0a576d15e0 ("powerpc: Add new transactional memory state to the signal context")
Cc: [email protected] # v3.9+
Signed-off-by: Michael Neuling <[email protected]>
Signed-off-by: Michael Ellerman <[email protected]> | d2b9d2a5ad5ef04ff978c9923d19730cb05efd55 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | restore_tm_user_regs | restore_tm_user_regs( struct pt_regs * regs , struct mcontext __user * sr , struct mcontext __user * tm_sr) | ['regs', 'sr', 'tm_sr'] | static long restore_tm_user_regs(struct pt_regs *regs,
struct mcontext __user *sr,
struct mcontext __user *tm_sr)
{
long err;
unsigned long msr, msr_hi;
#ifdef CONFIG_VSX
int i;
#endif
/*
* restore general registers but not including MSR or SOFTE. Also
* take care of keeping r2 (TLS) intact if not a signal.
* See comment in signal_64.c:restore_tm_sigcontexts();
* TFHAR is restored from the checkpointed NIP; TEXASR and TFIAR
* were set by the signal delivery.
*/
err = restore_general_regs(regs, tm_sr);
err |= restore_general_regs(¤t->thread.ckpt_regs, sr);
err |= __get_user(current->thread.tm_tfhar, &sr->mc_gregs[PT_NIP]);
err |= __get_user(msr, &sr->mc_gregs[PT_MSR]);
if (err)
return 1;
/* Restore the previous little-endian mode */
regs->msr = (regs->msr & ~MSR_LE) | (msr & MSR_LE);
/*
* Do this before updating the thread state in
* current->thread.fpr/vr/evr. That way, if we get preempted
* and another task grabs the FPU/Altivec/SPE, it won't be
* tempted to save the current CPU state into the thread_struct
* and corrupt what we are writing there.
*/
discard_lazy_cpu_state();
#ifdef CONFIG_ALTIVEC
regs->msr &= ~MSR_VEC;
if (msr & MSR_VEC) {
/* restore altivec registers from the stack */
if (__copy_from_user(¤t->thread.vr_state, &sr->mc_vregs,
sizeof(sr->mc_vregs)) ||
__copy_from_user(¤t->thread.transact_vr,
&tm_sr->mc_vregs,
sizeof(sr->mc_vregs)))
return 1;
} else if (current->thread.used_vr) {
memset(¤t->thread.vr_state, 0,
ELF_NVRREG * sizeof(vector128));
memset(¤t->thread.transact_vr, 0,
ELF_NVRREG * sizeof(vector128));
}
/* Always get VRSAVE back */
if (__get_user(current->thread.vrsave,
(u32 __user *)&sr->mc_vregs[32]) ||
__get_user(current->thread.transact_vrsave,
(u32 __user *)&tm_sr->mc_vregs[32]))
return 1;
if (cpu_has_feature(CPU_FTR_ALTIVEC))
mtspr(SPRN_VRSAVE, current->thread.vrsave);
#endif /* CONFIG_ALTIVEC */
regs->msr &= ~(MSR_FP | MSR_FE0 | MSR_FE1);
if (copy_fpr_from_user(current, &sr->mc_fregs) ||
copy_transact_fpr_from_user(current, &tm_sr->mc_fregs))
return 1;
#ifdef CONFIG_VSX
regs->msr &= ~MSR_VSX;
if (msr & MSR_VSX) {
/*
* Restore altivec registers from the stack to a local
* buffer, then write this out to the thread_struct
*/
if (copy_vsx_from_user(current, &sr->mc_vsregs) ||
copy_transact_vsx_from_user(current, &tm_sr->mc_vsregs))
return 1;
} else if (current->thread.used_vsr)
for (i = 0; i < 32 ; i++) {
current->thread.fp_state.fpr[i][TS_VSRLOWOFFSET] = 0;
current->thread.transact_fp.fpr[i][TS_VSRLOWOFFSET] = 0;
}
#endif /* CONFIG_VSX */
#ifdef CONFIG_SPE
/* SPE regs are not checkpointed with TM, so this section is
* simply the same as in restore_user_regs().
*/
regs->msr &= ~MSR_SPE;
if (msr & MSR_SPE) {
if (__copy_from_user(current->thread.evr, &sr->mc_vregs,
ELF_NEVRREG * sizeof(u32)))
return 1;
} else if (current->thread.used_spe)
memset(current->thread.evr, 0, ELF_NEVRREG * sizeof(u32));
/* Always get SPEFSCR back */
if (__get_user(current->thread.spefscr, (u32 __user *)&sr->mc_vregs
+ ELF_NEVRREG))
return 1;
#endif /* CONFIG_SPE */
/* Now, recheckpoint. This loads up all of the checkpointed (older)
* registers, including FP and V[S]Rs. After recheckpointing, the
* transactional versions should be loaded.
*/
tm_enable();
/* Make sure the transaction is marked as failed */
current->thread.tm_texasr |= TEXASR_FS;
/* This loads the checkpointed FP/VEC state, if used */
tm_recheckpoint(¤t->thread, msr);
/* Get the top half of the MSR */
if (__get_user(msr_hi, &tm_sr->mc_gregs[PT_MSR]))
return 1;
/* Pull in MSR TM from user context */
regs->msr = (regs->msr & ~MSR_TS_MASK) | ((msr_hi<<32) & MSR_TS_MASK);
/* This loads the speculative FP/VEC state, if used */
if (msr & MSR_FP) {
do_load_up_transact_fpu(¤t->thread);
regs->msr |= (MSR_FP | current->thread.fpexc_mode);
}
#ifdef CONFIG_ALTIVEC
if (msr & MSR_VEC) {
do_load_up_transact_altivec(¤t->thread);
regs->msr |= MSR_VEC;
}
#endif
return 0;
} | 641 | True | 1 |
|
CVE-2013-7446 | False | False | False | nan | AV:L/AC:M/Au:N/C:N/I:P/A:C | LOCAL | MEDIUM | NONE | NONE | PARTIAL | COMPLETE | 5.4 | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H | LOCAL | HIGH | LOW | NONE | UNCHANGED | NONE | LOW | HIGH | 5.3 | MEDIUM | 1.0 | 4.2 | nan | [{'url': 'https://forums.grsecurity.net/viewtopic.php?f=3&t=4150', 'name': 'https://forums.grsecurity.net/viewtopic.php?f=3&t=4150', 'refsource': 'MISC', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/7d267278a9ece963d77eefec61630223fce08c6c', 'name': 'https://github.com/torvalds/linux/commit/7d267278a9ece963d77eefec61630223fce08c6c', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.spinics.net/lists/netdev/msg318826.html', 'name': "[netdev] 20150304 [PATCH net] af_unix: don't poll dead peers", 'refsource': 'MLIST', 'tags': ['Exploit']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7d267278a9ece963d77eefec61630223fce08c6c', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7d267278a9ece963d77eefec61630223fce08c6c', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2015/11/18/16', 'name': '[oss-security] 20151118 Re: CVE request - Linux kernel - Unix sockets use after free - peer_wait_queue prematurely freed', 'refsource': 'MLIST', 'tags': []}, {'url': 'https://lkml.org/lkml/2014/5/15/532', 'name': '[linux-kernel] 20140515 eventpoll __list_del_entry corruption (was: perf: use after free in perf_remove_from_context)', 'refsource': 'MLIST', 'tags': ['Exploit']}, {'url': 'https://lkml.org/lkml/2015/9/13/195', 'name': '[linux-kernel] 20150913 List corruption on epoll_ctl(EPOLL_CTL_DEL) an AF_UNIX socket', 'refsource': 'MLIST', 'tags': ['Exploit']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1282688', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1282688', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://lkml.org/lkml/2013/10/14/424', 'name': '[linux-kernel] 20131014 Re: epoll oops.', 'refsource': 'MLIST', 'tags': ['Exploit']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00009.html', 'name': 'SUSE-SU-2016:1995', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00014.html', 'name': 'SUSE-SU-2016:2000', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00016.html', 'name': 'SUSE-SU-2016:2002', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00003.html', 'name': 'SUSE-SU-2016:1961', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00026.html', 'name': 'SUSE-SU-2016:2014', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00019.html', 'name': 'SUSE-SU-2016:2006', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html', 'name': 'SUSE-SU-2016:2074', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00020.html', 'name': 'SUSE-SU-2016:2007', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00022.html', 'name': 'SUSE-SU-2016:2010', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00044.html', 'name': 'openSUSE-SU-2016:1641', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00015.html', 'name': 'SUSE-SU-2016:2001', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00008.html', 'name': 'SUSE-SU-2016:1994', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00017.html', 'name': 'SUSE-SU-2016:2003', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.securityfocus.com/bid/77638', 'name': '77638', 'refsource': 'BID', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00023.html', 'name': 'SUSE-SU-2016:2011', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00018.html', 'name': 'SUSE-SU-2016:2005', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00021.html', 'name': 'SUSE-SU-2016:2009', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00045.html', 'name': 'SUSE-SU-2016:0757', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00043.html', 'name': 'SUSE-SU-2016:0755', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00034.html', 'name': 'SUSE-SU-2016:0746', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00041.html', 'name': 'SUSE-SU-2016:0753', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00038.html', 'name': 'SUSE-SU-2016:0750', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00044.html', 'name': 'SUSE-SU-2016:0756', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00042.html', 'name': 'SUSE-SU-2016:0754', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00035.html', 'name': 'SUSE-SU-2016:0747', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00033.html', 'name': 'SUSE-SU-2016:0745', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00040.html', 'name': 'SUSE-SU-2016:0752', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.html', 'name': 'SUSE-SU-2016:0911', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html', 'name': 'SUSE-SU-2016:1102', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00037.html', 'name': 'SUSE-SU-2016:0749', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00039.html', 'name': 'SUSE-SU-2016:0751', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2889-1', 'name': 'USN-2889-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2890-1', 'name': 'USN-2890-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2889-2', 'name': 'USN-2889-2', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2890-2', 'name': 'USN-2890-2', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2887-1', 'name': 'USN-2887-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2890-3', 'name': 'USN-2890-3', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2887-2', 'name': 'USN-2887-2', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2888-1', 'name': 'USN-2888-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2886-1', 'name': 'USN-2886-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.debian.org/security/2015/dsa-3426', 'name': 'DSA-3426', 'refsource': 'DEBIAN', 'tags': []}, {'url': 'http://www.securitytracker.com/id/1034557', 'name': '1034557', 'refsource': 'SECTRACK', 'tags': []}, {'url': 'https://groups.google.com/forum/#!topic/syzkaller/3twDUI4Cpm8', 'name': 'https://groups.google.com/forum/#!topic/syzkaller/3twDUI4Cpm8', 'refsource': 'CONFIRM', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'NVD-CWE-Other'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'Use-after-free vulnerability in net/unix/af_unix.c in the Linux kernel before 4.3.3 allows local users to bypass intended AF_UNIX socket permissions or cause a denial of service (panic) via crafted epoll_ctl calls.'}] | 2018-08-13T21:47Z | 2015-12-28T11:59Z | Other | NVD is only using a subset of CWE for mapping instead of the entire CWE, and the weakness type is not covered by that subset. | Insufficient Information | https://nvd.nist.gov/vuln/categories | 0 | Rainer Weikusat | 2015-11-20 22:07:23+00:00 | unix: avoid use-after-free in ep_remove_wait_queue
Rainer Weikusat <[email protected]> writes:
An AF_UNIX datagram socket being the client in an n:1 association with
some server socket is only allowed to send messages to the server if the
receive queue of this socket contains at most sk_max_ack_backlog
datagrams. This implies that prospective writers might be forced to go
to sleep despite none of the message presently enqueued on the server
receive queue were sent by them. In order to ensure that these will be
woken up once space becomes again available, the present unix_dgram_poll
routine does a second sock_poll_wait call with the peer_wait wait queue
of the server socket as queue argument (unix_dgram_recvmsg does a wake
up on this queue after a datagram was received). This is inherently
problematic because the server socket is only guaranteed to remain alive
for as long as the client still holds a reference to it. In case the
connection is dissolved via connect or by the dead peer detection logic
in unix_dgram_sendmsg, the server socket may be freed despite "the
polling mechanism" (in particular, epoll) still has a pointer to the
corresponding peer_wait queue. There's no way to forcibly deregister a
wait queue with epoll.
Based on an idea by Jason Baron, the patch below changes the code such
that a wait_queue_t belonging to the client socket is enqueued on the
peer_wait queue of the server whenever the peer receive queue full
condition is detected by either a sendmsg or a poll. A wake up on the
peer queue is then relayed to the ordinary wait queue of the client
socket via wake function. The connection to the peer wait queue is again
dissolved if either a wake up is about to be relayed or the client
socket reconnects or a dead peer is detected or the client socket is
itself closed. This enables removing the second sock_poll_wait from
unix_dgram_poll, thus avoiding the use-after-free, while still ensuring
that no blocked writer sleeps forever.
Signed-off-by: Rainer Weikusat <[email protected]>
Fixes: ec0d215f9420 ("af_unix: fix 'poll for write'/connected DGRAM sockets")
Reviewed-by: Jason Baron <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 7d267278a9ece963d77eefec61630223fce08c6c | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | unix_dgram_poll | unix_dgram_poll( struct file * file , struct socket * sock , poll_table * wait) | ['file', 'sock', 'wait'] | static unsigned int unix_dgram_poll(struct file *file, struct socket *sock,
poll_table *wait)
{
struct sock *sk = sock->sk, *other;
unsigned int mask, writable;
sock_poll_wait(file, sk_sleep(sk), wait);
mask = 0;
/* exceptional events? */
if (sk->sk_err || !skb_queue_empty(&sk->sk_error_queue))
mask |= POLLERR |
(sock_flag(sk, SOCK_SELECT_ERR_QUEUE) ? POLLPRI : 0);
if (sk->sk_shutdown & RCV_SHUTDOWN)
mask |= POLLRDHUP | POLLIN | POLLRDNORM;
if (sk->sk_shutdown == SHUTDOWN_MASK)
mask |= POLLHUP;
/* readable? */
if (!skb_queue_empty(&sk->sk_receive_queue))
mask |= POLLIN | POLLRDNORM;
/* Connection-based need to check for termination and startup */
if (sk->sk_type == SOCK_SEQPACKET) {
if (sk->sk_state == TCP_CLOSE)
mask |= POLLHUP;
/* connection hasn't started yet? */
if (sk->sk_state == TCP_SYN_SENT)
return mask;
}
/* No write status requested, avoid expensive OUT tests. */
if (!(poll_requested_events(wait) & (POLLWRBAND|POLLWRNORM|POLLOUT)))
return mask;
writable = unix_writable(sk);
other = unix_peer_get(sk);
if (other) {
if (unix_peer(other) != sk) {
sock_poll_wait(file, &unix_sk(other)->peer_wait, wait);
if (unix_recvq_full(other))
writable = 0;
}
sock_put(other);
}
if (writable)
mask |= POLLOUT | POLLWRNORM | POLLWRBAND;
else
set_bit(SOCK_ASYNC_NOSPACE, &sk->sk_socket->flags);
return mask;
} | 273 | True | 1 |
|
CVE-2013-7446 | False | False | False | nan | AV:L/AC:M/Au:N/C:N/I:P/A:C | LOCAL | MEDIUM | NONE | NONE | PARTIAL | COMPLETE | 5.4 | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H | LOCAL | HIGH | LOW | NONE | UNCHANGED | NONE | LOW | HIGH | 5.3 | MEDIUM | 1.0 | 4.2 | nan | [{'url': 'https://forums.grsecurity.net/viewtopic.php?f=3&t=4150', 'name': 'https://forums.grsecurity.net/viewtopic.php?f=3&t=4150', 'refsource': 'MISC', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/7d267278a9ece963d77eefec61630223fce08c6c', 'name': 'https://github.com/torvalds/linux/commit/7d267278a9ece963d77eefec61630223fce08c6c', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.spinics.net/lists/netdev/msg318826.html', 'name': "[netdev] 20150304 [PATCH net] af_unix: don't poll dead peers", 'refsource': 'MLIST', 'tags': ['Exploit']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7d267278a9ece963d77eefec61630223fce08c6c', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7d267278a9ece963d77eefec61630223fce08c6c', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2015/11/18/16', 'name': '[oss-security] 20151118 Re: CVE request - Linux kernel - Unix sockets use after free - peer_wait_queue prematurely freed', 'refsource': 'MLIST', 'tags': []}, {'url': 'https://lkml.org/lkml/2014/5/15/532', 'name': '[linux-kernel] 20140515 eventpoll __list_del_entry corruption (was: perf: use after free in perf_remove_from_context)', 'refsource': 'MLIST', 'tags': ['Exploit']}, {'url': 'https://lkml.org/lkml/2015/9/13/195', 'name': '[linux-kernel] 20150913 List corruption on epoll_ctl(EPOLL_CTL_DEL) an AF_UNIX socket', 'refsource': 'MLIST', 'tags': ['Exploit']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1282688', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1282688', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://lkml.org/lkml/2013/10/14/424', 'name': '[linux-kernel] 20131014 Re: epoll oops.', 'refsource': 'MLIST', 'tags': ['Exploit']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00009.html', 'name': 'SUSE-SU-2016:1995', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00014.html', 'name': 'SUSE-SU-2016:2000', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00016.html', 'name': 'SUSE-SU-2016:2002', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00003.html', 'name': 'SUSE-SU-2016:1961', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00026.html', 'name': 'SUSE-SU-2016:2014', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00019.html', 'name': 'SUSE-SU-2016:2006', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html', 'name': 'SUSE-SU-2016:2074', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00020.html', 'name': 'SUSE-SU-2016:2007', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00022.html', 'name': 'SUSE-SU-2016:2010', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00044.html', 'name': 'openSUSE-SU-2016:1641', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00015.html', 'name': 'SUSE-SU-2016:2001', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00008.html', 'name': 'SUSE-SU-2016:1994', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00017.html', 'name': 'SUSE-SU-2016:2003', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.securityfocus.com/bid/77638', 'name': '77638', 'refsource': 'BID', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00023.html', 'name': 'SUSE-SU-2016:2011', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00018.html', 'name': 'SUSE-SU-2016:2005', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00021.html', 'name': 'SUSE-SU-2016:2009', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00045.html', 'name': 'SUSE-SU-2016:0757', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00043.html', 'name': 'SUSE-SU-2016:0755', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00034.html', 'name': 'SUSE-SU-2016:0746', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00041.html', 'name': 'SUSE-SU-2016:0753', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00038.html', 'name': 'SUSE-SU-2016:0750', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00044.html', 'name': 'SUSE-SU-2016:0756', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00042.html', 'name': 'SUSE-SU-2016:0754', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00035.html', 'name': 'SUSE-SU-2016:0747', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00033.html', 'name': 'SUSE-SU-2016:0745', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00040.html', 'name': 'SUSE-SU-2016:0752', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.html', 'name': 'SUSE-SU-2016:0911', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html', 'name': 'SUSE-SU-2016:1102', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00037.html', 'name': 'SUSE-SU-2016:0749', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00039.html', 'name': 'SUSE-SU-2016:0751', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2889-1', 'name': 'USN-2889-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2890-1', 'name': 'USN-2890-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2889-2', 'name': 'USN-2889-2', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2890-2', 'name': 'USN-2890-2', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2887-1', 'name': 'USN-2887-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2890-3', 'name': 'USN-2890-3', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2887-2', 'name': 'USN-2887-2', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2888-1', 'name': 'USN-2888-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2886-1', 'name': 'USN-2886-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.debian.org/security/2015/dsa-3426', 'name': 'DSA-3426', 'refsource': 'DEBIAN', 'tags': []}, {'url': 'http://www.securitytracker.com/id/1034557', 'name': '1034557', 'refsource': 'SECTRACK', 'tags': []}, {'url': 'https://groups.google.com/forum/#!topic/syzkaller/3twDUI4Cpm8', 'name': 'https://groups.google.com/forum/#!topic/syzkaller/3twDUI4Cpm8', 'refsource': 'CONFIRM', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'NVD-CWE-Other'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'Use-after-free vulnerability in net/unix/af_unix.c in the Linux kernel before 4.3.3 allows local users to bypass intended AF_UNIX socket permissions or cause a denial of service (panic) via crafted epoll_ctl calls.'}] | 2018-08-13T21:47Z | 2015-12-28T11:59Z | Other | NVD is only using a subset of CWE for mapping instead of the entire CWE, and the weakness type is not covered by that subset. | Insufficient Information | https://nvd.nist.gov/vuln/categories | 0 | Rainer Weikusat | 2015-11-20 22:07:23+00:00 | unix: avoid use-after-free in ep_remove_wait_queue
Rainer Weikusat <[email protected]> writes:
An AF_UNIX datagram socket being the client in an n:1 association with
some server socket is only allowed to send messages to the server if the
receive queue of this socket contains at most sk_max_ack_backlog
datagrams. This implies that prospective writers might be forced to go
to sleep despite none of the message presently enqueued on the server
receive queue were sent by them. In order to ensure that these will be
woken up once space becomes again available, the present unix_dgram_poll
routine does a second sock_poll_wait call with the peer_wait wait queue
of the server socket as queue argument (unix_dgram_recvmsg does a wake
up on this queue after a datagram was received). This is inherently
problematic because the server socket is only guaranteed to remain alive
for as long as the client still holds a reference to it. In case the
connection is dissolved via connect or by the dead peer detection logic
in unix_dgram_sendmsg, the server socket may be freed despite "the
polling mechanism" (in particular, epoll) still has a pointer to the
corresponding peer_wait queue. There's no way to forcibly deregister a
wait queue with epoll.
Based on an idea by Jason Baron, the patch below changes the code such
that a wait_queue_t belonging to the client socket is enqueued on the
peer_wait queue of the server whenever the peer receive queue full
condition is detected by either a sendmsg or a poll. A wake up on the
peer queue is then relayed to the ordinary wait queue of the client
socket via wake function. The connection to the peer wait queue is again
dissolved if either a wake up is about to be relayed or the client
socket reconnects or a dead peer is detected or the client socket is
itself closed. This enables removing the second sock_poll_wait from
unix_dgram_poll, thus avoiding the use-after-free, while still ensuring
that no blocked writer sleeps forever.
Signed-off-by: Rainer Weikusat <[email protected]>
Fixes: ec0d215f9420 ("af_unix: fix 'poll for write'/connected DGRAM sockets")
Reviewed-by: Jason Baron <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 7d267278a9ece963d77eefec61630223fce08c6c | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | unix_dgram_sendmsg | unix_dgram_sendmsg( struct socket * sock , struct msghdr * msg , size_t len) | ['sock', 'msg', 'len'] | static int unix_dgram_sendmsg(struct socket *sock, struct msghdr *msg,
size_t len)
{
struct sock *sk = sock->sk;
struct net *net = sock_net(sk);
struct unix_sock *u = unix_sk(sk);
DECLARE_SOCKADDR(struct sockaddr_un *, sunaddr, msg->msg_name);
struct sock *other = NULL;
int namelen = 0; /* fake GCC */
int err;
unsigned int hash;
struct sk_buff *skb;
long timeo;
struct scm_cookie scm;
int max_level;
int data_len = 0;
wait_for_unix_gc();
err = scm_send(sock, msg, &scm, false);
if (err < 0)
return err;
err = -EOPNOTSUPP;
if (msg->msg_flags&MSG_OOB)
goto out;
if (msg->msg_namelen) {
err = unix_mkname(sunaddr, msg->msg_namelen, &hash);
if (err < 0)
goto out;
namelen = err;
} else {
sunaddr = NULL;
err = -ENOTCONN;
other = unix_peer_get(sk);
if (!other)
goto out;
}
if (test_bit(SOCK_PASSCRED, &sock->flags) && !u->addr
&& (err = unix_autobind(sock)) != 0)
goto out;
err = -EMSGSIZE;
if (len > sk->sk_sndbuf - 32)
goto out;
if (len > SKB_MAX_ALLOC) {
data_len = min_t(size_t,
len - SKB_MAX_ALLOC,
MAX_SKB_FRAGS * PAGE_SIZE);
data_len = PAGE_ALIGN(data_len);
BUILD_BUG_ON(SKB_MAX_ALLOC < PAGE_SIZE);
}
skb = sock_alloc_send_pskb(sk, len - data_len, data_len,
msg->msg_flags & MSG_DONTWAIT, &err,
PAGE_ALLOC_COSTLY_ORDER);
if (skb == NULL)
goto out;
err = unix_scm_to_skb(&scm, skb, true);
if (err < 0)
goto out_free;
max_level = err + 1;
skb_put(skb, len - data_len);
skb->data_len = data_len;
skb->len = len;
err = skb_copy_datagram_from_iter(skb, 0, &msg->msg_iter, len);
if (err)
goto out_free;
timeo = sock_sndtimeo(sk, msg->msg_flags & MSG_DONTWAIT);
restart:
if (!other) {
err = -ECONNRESET;
if (sunaddr == NULL)
goto out_free;
other = unix_find_other(net, sunaddr, namelen, sk->sk_type,
hash, &err);
if (other == NULL)
goto out_free;
}
if (sk_filter(other, skb) < 0) {
/* Toss the packet but do not return any error to the sender */
err = len;
goto out_free;
}
unix_state_lock(other);
err = -EPERM;
if (!unix_may_send(sk, other))
goto out_unlock;
if (sock_flag(other, SOCK_DEAD)) {
/*
* Check with 1003.1g - what should
* datagram error
*/
unix_state_unlock(other);
sock_put(other);
err = 0;
unix_state_lock(sk);
if (unix_peer(sk) == other) {
unix_peer(sk) = NULL;
unix_state_unlock(sk);
unix_dgram_disconnected(sk, other);
sock_put(other);
err = -ECONNREFUSED;
} else {
unix_state_unlock(sk);
}
other = NULL;
if (err)
goto out_free;
goto restart;
}
err = -EPIPE;
if (other->sk_shutdown & RCV_SHUTDOWN)
goto out_unlock;
if (sk->sk_type != SOCK_SEQPACKET) {
err = security_unix_may_send(sk->sk_socket, other->sk_socket);
if (err)
goto out_unlock;
}
if (unix_peer(other) != sk && unix_recvq_full(other)) {
if (!timeo) {
err = -EAGAIN;
goto out_unlock;
}
timeo = unix_wait_for_peer(other, timeo);
err = sock_intr_errno(timeo);
if (signal_pending(current))
goto out_free;
goto restart;
}
if (sock_flag(other, SOCK_RCVTSTAMP))
__net_timestamp(skb);
maybe_add_creds(skb, sock, other);
skb_queue_tail(&other->sk_receive_queue, skb);
if (max_level > unix_sk(other)->recursion_level)
unix_sk(other)->recursion_level = max_level;
unix_state_unlock(other);
other->sk_data_ready(other);
sock_put(other);
scm_destroy(&scm);
return len;
out_unlock:
unix_state_unlock(other);
out_free:
kfree_skb(skb);
out:
if (other)
sock_put(other);
scm_destroy(&scm);
return err;
} | 812 | True | 1 |
|
CVE-2015-7990 | False | False | False | nan | AV:L/AC:M/Au:N/C:P/I:P/A:C | LOCAL | MEDIUM | NONE | PARTIAL | PARTIAL | COMPLETE | 5.9 | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H | LOCAL | HIGH | LOW | NONE | UNCHANGED | LOW | LOW | HIGH | 5.8 | MEDIUM | 1.0 | 4.7 | nan | [{'url': 'https://lkml.org/lkml/2015/10/16/530', 'name': '[linux-kernel] 20151016 [PATCH] RDS: fix race condition when sending a message on unbound socket.', 'refsource': 'MLIST', 'tags': []}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1276437', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1276437', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8c7188b23474cca017b3ef354c4a58456f68303a', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8c7188b23474cca017b3ef354c4a58456f68303a', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'https://bugzilla.suse.com/show_bug.cgi?id=952384', 'name': 'https://bugzilla.suse.com/show_bug.cgi?id=952384', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/8c7188b23474cca017b3ef354c4a58456f68303a', 'name': 'https://github.com/torvalds/linux/commit/8c7188b23474cca017b3ef354c4a58456f68303a', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.openwall.com/lists/oss-security/2015/10/27/5', 'name': '[oss-security] 20151027 Re: CVE-2015-6937 - Linux kernel - NULL pointer dereference in net/rds/connection.c', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html', 'name': 'SUSE-SU-2016:2074', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.securityfocus.com/bid/77340', 'name': '77340', 'refsource': 'BID', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00021.html', 'name': 'SUSE-SU-2016:0386', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2889-1', 'name': 'USN-2889-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2890-1', 'name': 'USN-2890-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2890-3', 'name': 'USN-2890-3', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2887-2', 'name': 'USN-2887-2', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00009.html', 'name': 'SUSE-SU-2016:0337', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00007.html', 'name': 'SUSE-SU-2016:0335', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2888-1', 'name': 'USN-2888-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00018.html', 'name': 'SUSE-SU-2016:0381', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2889-2', 'name': 'USN-2889-2', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00017.html', 'name': 'SUSE-SU-2016:0380', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00020.html', 'name': 'SUSE-SU-2016:0384', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2890-2', 'name': 'USN-2890-2', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00022.html', 'name': 'SUSE-SU-2016:0387', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2887-1', 'name': 'USN-2887-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00034.html', 'name': 'SUSE-SU-2016:0434', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2886-1', 'name': 'USN-2886-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00019.html', 'name': 'SUSE-SU-2016:0383', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00013.html', 'name': 'SUSE-SU-2016:0354', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00035.html', 'name': 'SUSE-SU-2015:2108', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.debian.org/security/2015/dsa-3396', 'name': 'DSA-3396', 'refsource': 'DEBIAN', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00005.html', 'name': 'SUSE-SU-2015:2194', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00026.html', 'name': 'SUSE-SU-2015:2339', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-updates/2015-12/msg00039.html', 'name': 'openSUSE-SU-2015:2232', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.securitytracker.com/id/1034453', 'name': '1034453', 'refsource': 'SECTRACK', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00031.html', 'name': 'SUSE-SU-2015:2350', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00018.html', 'name': 'SUSE-SU-2015:2292', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html', 'name': 'http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html', 'refsource': 'CONFIRM', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-362'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'Race condition in the rds_sendmsg function in net/rds/sendmsg.c in the Linux kernel before 4.3.3 allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by using a socket that was not properly bound. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-6937.'}] | 2018-10-17T01:29Z | 2015-12-28T11:59Z | Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') | The program contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. |
This can have security implications when the expected synchronization is in security-critical code, such as recording whether a user is authenticated or modifying important state information that should not be influenced by an outsider.
A race condition occurs within concurrent environments, and is effectively a property of a code sequence. Depending on the context, a code sequence may be in the form of a function call, a small number of instructions, a series of program invocations, etc.
A race condition violates these properties, which are closely related:
Exclusivity - the code sequence is given exclusive access to the shared resource, i.e., no other code sequence can modify properties of the shared resource before the original sequence has completed execution.
Atomicity - the code sequence is behaviorally atomic, i.e., no other thread or process can concurrently execute the same sequence of instructions (or a subset) against the same resource.
A race condition exists when an "interfering code sequence" can still access the shared resource, violating exclusivity. Programmers may assume that certain code sequences execute too quickly to be affected by an interfering code sequence; when they are not, this violates atomicity. For example, the single "x++" statement may appear atomic at the code layer, but it is actually non-atomic at the instruction layer, since it involves a read (the original value of x), followed by a computation (x+1), followed by a write (save the result to x).
The interfering code sequence could be "trusted" or "untrusted." A trusted interfering code sequence occurs within the program; it cannot be modified by the attacker, and it can only be invoked indirectly. An untrusted interfering code sequence can be authored directly by the attacker, and typically it is external to the vulnerable program.
| https://cwe.mitre.org/data/definitions/362.html | 0 | Quentin Casasnovas | 2015-11-24 17:13:21-05:00 | RDS: fix race condition when sending a message on unbound socket
Sasha's found a NULL pointer dereference in the RDS connection code when
sending a message to an apparently unbound socket. The problem is caused
by the code checking if the socket is bound in rds_sendmsg(), which checks
the rs_bound_addr field without taking a lock on the socket. This opens a
race where rs_bound_addr is temporarily set but where the transport is not
in rds_bind(), leading to a NULL pointer dereference when trying to
dereference 'trans' in __rds_conn_create().
Vegard wrote a reproducer for this issue, so kindly ask him to share if
you're interested.
I cannot reproduce the NULL pointer dereference using Vegard's reproducer
with this patch, whereas I could without.
Complete earlier incomplete fix to CVE-2015-6937:
74e98eb08588 ("RDS: verify the underlying transport exists before creating a connection")
Cc: David S. Miller <[email protected]>
Cc: [email protected]
Reviewed-by: Vegard Nossum <[email protected]>
Reviewed-by: Sasha Levin <[email protected]>
Acked-by: Santosh Shilimkar <[email protected]>
Signed-off-by: Quentin Casasnovas <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 8c7188b23474cca017b3ef354c4a58456f68303a | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | __rds_conn_create | __rds_conn_create( struct net * net , __be32 laddr , __be32 faddr , struct rds_transport * trans , gfp_t gfp , int is_outgoing) | ['net', 'laddr', 'faddr', 'trans', 'gfp', 'is_outgoing'] | static struct rds_connection *__rds_conn_create(struct net *net,
__be32 laddr, __be32 faddr,
struct rds_transport *trans, gfp_t gfp,
int is_outgoing)
{
struct rds_connection *conn, *parent = NULL;
struct hlist_head *head = rds_conn_bucket(laddr, faddr);
struct rds_transport *loop_trans;
unsigned long flags;
int ret;
rcu_read_lock();
conn = rds_conn_lookup(net, head, laddr, faddr, trans);
if (conn && conn->c_loopback && conn->c_trans != &rds_loop_transport &&
laddr == faddr && !is_outgoing) {
/* This is a looped back IB connection, and we're
* called by the code handling the incoming connect.
* We need a second connection object into which we
* can stick the other QP. */
parent = conn;
conn = parent->c_passive;
}
rcu_read_unlock();
if (conn)
goto out;
conn = kmem_cache_zalloc(rds_conn_slab, gfp);
if (!conn) {
conn = ERR_PTR(-ENOMEM);
goto out;
}
INIT_HLIST_NODE(&conn->c_hash_node);
conn->c_laddr = laddr;
conn->c_faddr = faddr;
spin_lock_init(&conn->c_lock);
conn->c_next_tx_seq = 1;
rds_conn_net_set(conn, net);
init_waitqueue_head(&conn->c_waitq);
INIT_LIST_HEAD(&conn->c_send_queue);
INIT_LIST_HEAD(&conn->c_retrans);
ret = rds_cong_get_maps(conn);
if (ret) {
kmem_cache_free(rds_conn_slab, conn);
conn = ERR_PTR(ret);
goto out;
}
/*
* This is where a connection becomes loopback. If *any* RDS sockets
* can bind to the destination address then we'd rather the messages
* flow through loopback rather than either transport.
*/
loop_trans = rds_trans_get_preferred(net, faddr);
if (loop_trans) {
rds_trans_put(loop_trans);
conn->c_loopback = 1;
if (is_outgoing && trans->t_prefer_loopback) {
/* "outgoing" connection - and the transport
* says it wants the connection handled by the
* loopback transport. This is what TCP does.
*/
trans = &rds_loop_transport;
}
}
if (trans == NULL) {
kmem_cache_free(rds_conn_slab, conn);
conn = ERR_PTR(-ENODEV);
goto out;
}
conn->c_trans = trans;
ret = trans->conn_alloc(conn, gfp);
if (ret) {
kmem_cache_free(rds_conn_slab, conn);
conn = ERR_PTR(ret);
goto out;
}
atomic_set(&conn->c_state, RDS_CONN_DOWN);
conn->c_send_gen = 0;
conn->c_outgoing = (is_outgoing ? 1 : 0);
conn->c_reconnect_jiffies = 0;
INIT_DELAYED_WORK(&conn->c_send_w, rds_send_worker);
INIT_DELAYED_WORK(&conn->c_recv_w, rds_recv_worker);
INIT_DELAYED_WORK(&conn->c_conn_w, rds_connect_worker);
INIT_WORK(&conn->c_down_w, rds_shutdown_worker);
mutex_init(&conn->c_cm_lock);
conn->c_flags = 0;
rdsdebug("allocated conn %p for %pI4 -> %pI4 over %s %s\n",
conn, &laddr, &faddr,
trans->t_name ? trans->t_name : "[unknown]",
is_outgoing ? "(outgoing)" : "");
/*
* Since we ran without holding the conn lock, someone could
* have created the same conn (either normal or passive) in the
* interim. We check while holding the lock. If we won, we complete
* init and return our conn. If we lost, we rollback and return the
* other one.
*/
spin_lock_irqsave(&rds_conn_lock, flags);
if (parent) {
/* Creating passive conn */
if (parent->c_passive) {
trans->conn_free(conn->c_transport_data);
kmem_cache_free(rds_conn_slab, conn);
conn = parent->c_passive;
} else {
parent->c_passive = conn;
rds_cong_add_conn(conn);
rds_conn_count++;
}
} else {
/* Creating normal conn */
struct rds_connection *found;
found = rds_conn_lookup(net, head, laddr, faddr, trans);
if (found) {
trans->conn_free(conn->c_transport_data);
kmem_cache_free(rds_conn_slab, conn);
conn = found;
} else {
hlist_add_head_rcu(&conn->c_hash_node, head);
rds_cong_add_conn(conn);
rds_conn_count++;
}
}
spin_unlock_irqrestore(&rds_conn_lock, flags);
out:
return conn;
} | 614 | True | 1 |
|
CVE-2015-7990 | False | False | False | nan | AV:L/AC:M/Au:N/C:P/I:P/A:C | LOCAL | MEDIUM | NONE | PARTIAL | PARTIAL | COMPLETE | 5.9 | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H | LOCAL | HIGH | LOW | NONE | UNCHANGED | LOW | LOW | HIGH | 5.8 | MEDIUM | 1.0 | 4.7 | nan | [{'url': 'https://lkml.org/lkml/2015/10/16/530', 'name': '[linux-kernel] 20151016 [PATCH] RDS: fix race condition when sending a message on unbound socket.', 'refsource': 'MLIST', 'tags': []}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1276437', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1276437', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8c7188b23474cca017b3ef354c4a58456f68303a', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8c7188b23474cca017b3ef354c4a58456f68303a', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'https://bugzilla.suse.com/show_bug.cgi?id=952384', 'name': 'https://bugzilla.suse.com/show_bug.cgi?id=952384', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/8c7188b23474cca017b3ef354c4a58456f68303a', 'name': 'https://github.com/torvalds/linux/commit/8c7188b23474cca017b3ef354c4a58456f68303a', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.openwall.com/lists/oss-security/2015/10/27/5', 'name': '[oss-security] 20151027 Re: CVE-2015-6937 - Linux kernel - NULL pointer dereference in net/rds/connection.c', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html', 'name': 'SUSE-SU-2016:2074', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.securityfocus.com/bid/77340', 'name': '77340', 'refsource': 'BID', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00021.html', 'name': 'SUSE-SU-2016:0386', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2889-1', 'name': 'USN-2889-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2890-1', 'name': 'USN-2890-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2890-3', 'name': 'USN-2890-3', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2887-2', 'name': 'USN-2887-2', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00009.html', 'name': 'SUSE-SU-2016:0337', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00007.html', 'name': 'SUSE-SU-2016:0335', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2888-1', 'name': 'USN-2888-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00018.html', 'name': 'SUSE-SU-2016:0381', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2889-2', 'name': 'USN-2889-2', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00017.html', 'name': 'SUSE-SU-2016:0380', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00020.html', 'name': 'SUSE-SU-2016:0384', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2890-2', 'name': 'USN-2890-2', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00022.html', 'name': 'SUSE-SU-2016:0387', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2887-1', 'name': 'USN-2887-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00034.html', 'name': 'SUSE-SU-2016:0434', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2886-1', 'name': 'USN-2886-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00019.html', 'name': 'SUSE-SU-2016:0383', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00013.html', 'name': 'SUSE-SU-2016:0354', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00035.html', 'name': 'SUSE-SU-2015:2108', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.debian.org/security/2015/dsa-3396', 'name': 'DSA-3396', 'refsource': 'DEBIAN', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00005.html', 'name': 'SUSE-SU-2015:2194', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00026.html', 'name': 'SUSE-SU-2015:2339', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-updates/2015-12/msg00039.html', 'name': 'openSUSE-SU-2015:2232', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.securitytracker.com/id/1034453', 'name': '1034453', 'refsource': 'SECTRACK', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00031.html', 'name': 'SUSE-SU-2015:2350', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00018.html', 'name': 'SUSE-SU-2015:2292', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html', 'name': 'http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html', 'refsource': 'CONFIRM', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-362'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'Race condition in the rds_sendmsg function in net/rds/sendmsg.c in the Linux kernel before 4.3.3 allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by using a socket that was not properly bound. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-6937.'}] | 2018-10-17T01:29Z | 2015-12-28T11:59Z | Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') | The program contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. |
This can have security implications when the expected synchronization is in security-critical code, such as recording whether a user is authenticated or modifying important state information that should not be influenced by an outsider.
A race condition occurs within concurrent environments, and is effectively a property of a code sequence. Depending on the context, a code sequence may be in the form of a function call, a small number of instructions, a series of program invocations, etc.
A race condition violates these properties, which are closely related:
Exclusivity - the code sequence is given exclusive access to the shared resource, i.e., no other code sequence can modify properties of the shared resource before the original sequence has completed execution.
Atomicity - the code sequence is behaviorally atomic, i.e., no other thread or process can concurrently execute the same sequence of instructions (or a subset) against the same resource.
A race condition exists when an "interfering code sequence" can still access the shared resource, violating exclusivity. Programmers may assume that certain code sequences execute too quickly to be affected by an interfering code sequence; when they are not, this violates atomicity. For example, the single "x++" statement may appear atomic at the code layer, but it is actually non-atomic at the instruction layer, since it involves a read (the original value of x), followed by a computation (x+1), followed by a write (save the result to x).
The interfering code sequence could be "trusted" or "untrusted." A trusted interfering code sequence occurs within the program; it cannot be modified by the attacker, and it can only be invoked indirectly. An untrusted interfering code sequence can be authored directly by the attacker, and typically it is external to the vulnerable program.
| https://cwe.mitre.org/data/definitions/362.html | 0 | Quentin Casasnovas | 2015-11-24 17:13:21-05:00 | RDS: fix race condition when sending a message on unbound socket
Sasha's found a NULL pointer dereference in the RDS connection code when
sending a message to an apparently unbound socket. The problem is caused
by the code checking if the socket is bound in rds_sendmsg(), which checks
the rs_bound_addr field without taking a lock on the socket. This opens a
race where rs_bound_addr is temporarily set but where the transport is not
in rds_bind(), leading to a NULL pointer dereference when trying to
dereference 'trans' in __rds_conn_create().
Vegard wrote a reproducer for this issue, so kindly ask him to share if
you're interested.
I cannot reproduce the NULL pointer dereference using Vegard's reproducer
with this patch, whereas I could without.
Complete earlier incomplete fix to CVE-2015-6937:
74e98eb08588 ("RDS: verify the underlying transport exists before creating a connection")
Cc: David S. Miller <[email protected]>
Cc: [email protected]
Reviewed-by: Vegard Nossum <[email protected]>
Reviewed-by: Sasha Levin <[email protected]>
Acked-by: Santosh Shilimkar <[email protected]>
Signed-off-by: Quentin Casasnovas <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 8c7188b23474cca017b3ef354c4a58456f68303a | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | rds_sendmsg | rds_sendmsg( struct socket * sock , struct msghdr * msg , size_t payload_len) | ['sock', 'msg', 'payload_len'] | int rds_sendmsg(struct socket *sock, struct msghdr *msg, size_t payload_len)
{
struct sock *sk = sock->sk;
struct rds_sock *rs = rds_sk_to_rs(sk);
DECLARE_SOCKADDR(struct sockaddr_in *, usin, msg->msg_name);
__be32 daddr;
__be16 dport;
struct rds_message *rm = NULL;
struct rds_connection *conn;
int ret = 0;
int queued = 0, allocated_mr = 0;
int nonblock = msg->msg_flags & MSG_DONTWAIT;
long timeo = sock_sndtimeo(sk, nonblock);
/* Mirror Linux UDP mirror of BSD error message compatibility */
/* XXX: Perhaps MSG_MORE someday */
if (msg->msg_flags & ~(MSG_DONTWAIT | MSG_CMSG_COMPAT)) {
ret = -EOPNOTSUPP;
goto out;
}
if (msg->msg_namelen) {
/* XXX fail non-unicast destination IPs? */
if (msg->msg_namelen < sizeof(*usin) || usin->sin_family != AF_INET) {
ret = -EINVAL;
goto out;
}
daddr = usin->sin_addr.s_addr;
dport = usin->sin_port;
} else {
/* We only care about consistency with ->connect() */
lock_sock(sk);
daddr = rs->rs_conn_addr;
dport = rs->rs_conn_port;
release_sock(sk);
}
/* racing with another thread binding seems ok here */
if (daddr == 0 || rs->rs_bound_addr == 0) {
ret = -ENOTCONN; /* XXX not a great errno */
goto out;
}
if (payload_len > rds_sk_sndbuf(rs)) {
ret = -EMSGSIZE;
goto out;
}
/* size of rm including all sgs */
ret = rds_rm_size(msg, payload_len);
if (ret < 0)
goto out;
rm = rds_message_alloc(ret, GFP_KERNEL);
if (!rm) {
ret = -ENOMEM;
goto out;
}
/* Attach data to the rm */
if (payload_len) {
rm->data.op_sg = rds_message_alloc_sgs(rm, ceil(payload_len, PAGE_SIZE));
if (!rm->data.op_sg) {
ret = -ENOMEM;
goto out;
}
ret = rds_message_copy_from_user(rm, &msg->msg_iter);
if (ret)
goto out;
}
rm->data.op_active = 1;
rm->m_daddr = daddr;
/* rds_conn_create has a spinlock that runs with IRQ off.
* Caching the conn in the socket helps a lot. */
if (rs->rs_conn && rs->rs_conn->c_faddr == daddr)
conn = rs->rs_conn;
else {
conn = rds_conn_create_outgoing(sock_net(sock->sk),
rs->rs_bound_addr, daddr,
rs->rs_transport,
sock->sk->sk_allocation);
if (IS_ERR(conn)) {
ret = PTR_ERR(conn);
goto out;
}
rs->rs_conn = conn;
}
/* Parse any control messages the user may have included. */
ret = rds_cmsg_send(rs, rm, msg, &allocated_mr);
if (ret)
goto out;
if (rm->rdma.op_active && !conn->c_trans->xmit_rdma) {
printk_ratelimited(KERN_NOTICE "rdma_op %p conn xmit_rdma %p\n",
&rm->rdma, conn->c_trans->xmit_rdma);
ret = -EOPNOTSUPP;
goto out;
}
if (rm->atomic.op_active && !conn->c_trans->xmit_atomic) {
printk_ratelimited(KERN_NOTICE "atomic_op %p conn xmit_atomic %p\n",
&rm->atomic, conn->c_trans->xmit_atomic);
ret = -EOPNOTSUPP;
goto out;
}
rds_conn_connect_if_down(conn);
ret = rds_cong_wait(conn->c_fcong, dport, nonblock, rs);
if (ret) {
rs->rs_seen_congestion = 1;
goto out;
}
while (!rds_send_queue_rm(rs, conn, rm, rs->rs_bound_port,
dport, &queued)) {
rds_stats_inc(s_send_queue_full);
if (nonblock) {
ret = -EAGAIN;
goto out;
}
timeo = wait_event_interruptible_timeout(*sk_sleep(sk),
rds_send_queue_rm(rs, conn, rm,
rs->rs_bound_port,
dport,
&queued),
timeo);
rdsdebug("sendmsg woke queued %d timeo %ld\n", queued, timeo);
if (timeo > 0 || timeo == MAX_SCHEDULE_TIMEOUT)
continue;
ret = timeo;
if (ret == 0)
ret = -ETIMEDOUT;
goto out;
}
/*
* By now we've committed to the send. We reuse rds_send_worker()
* to retry sends in the rds thread if the transport asks us to.
*/
rds_stats_inc(s_send_queued);
ret = rds_send_xmit(conn);
if (ret == -ENOMEM || ret == -EAGAIN)
queue_delayed_work(rds_wq, &conn->c_send_w, 1);
rds_message_put(rm);
return payload_len;
out:
/* If the user included a RDMA_MAP cmsg, we allocated a MR on the fly.
* If the sendmsg goes through, we keep the MR. If it fails with EAGAIN
* or in any other way, we need to destroy the MR again */
if (allocated_mr)
rds_rdma_unuse(rs, rds_rdma_cookie_key(rm->m_rdma_cookie), 1);
if (rm)
rds_message_put(rm);
return ret;
} | 760 | True | 1 |
|
CVE-2015-8539 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.8 | HIGH | 1.8 | 5.9 | nan | [{'url': 'http://www.openwall.com/lists/oss-security/2015/12/09/1', 'name': '[oss-security] 20151208 CVE request - Linux kernel - Fix handling of stored error in a negatively instantiated user key', 'refsource': 'MLIST', 'tags': ['Issue Tracking', 'Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/096fe9eaea40a17e125569f9e657e34cdb6d73bd', 'name': 'https://github.com/torvalds/linux/commit/096fe9eaea40a17e125569f9e657e34cdb6d73bd', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Vendor Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1284450', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1284450', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=096fe9eaea40a17e125569f9e657e34cdb6d73bd', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=096fe9eaea40a17e125569f9e657e34cdb6d73bd', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html', 'name': 'SUSE-SU-2016:1937', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html', 'name': 'SUSE-SU-2016:2074', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.html', 'name': 'SUSE-SU-2016:0911', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html', 'name': 'SUSE-SU-2016:1102', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00017.html', 'name': 'SUSE-SU-2016:0380', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00021.html', 'name': 'SUSE-SU-2016:0386', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00020.html', 'name': 'SUSE-SU-2016:0384', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00009.html', 'name': 'SUSE-SU-2016:0337', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00007.html', 'name': 'SUSE-SU-2016:0335', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00008.html', 'name': 'SUSE-SU-2016:0336', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00022.html', 'name': 'SUSE-SU-2016:0387', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00011.html', 'name': 'SUSE-SU-2016:0339', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00034.html', 'name': 'SUSE-SU-2016:0434', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00018.html', 'name': 'SUSE-SU-2016:0381', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00019.html', 'name': 'SUSE-SU-2016:0383', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'https://access.redhat.com/errata/RHSA-2018:0181', 'name': 'RHSA-2018:0181', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'https://access.redhat.com/errata/RHSA-2018:0152', 'name': 'RHSA-2018:0152', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'https://access.redhat.com/errata/RHSA-2018:0151', 'name': 'RHSA-2018:0151', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'https://usn.ubuntu.com/3798-2/', 'name': 'USN-3798-2', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'https://usn.ubuntu.com/3798-1/', 'name': 'USN-3798-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'CWE-269'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:linux_enterprise_real_time_extension:12:sp1:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.4:rc2:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.4:rc1:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndExcluding': '4.4', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The KEYS subsystem in the Linux kernel before 4.4 allows local users to gain privileges or cause a denial of service (BUG) via crafted keyctl commands that negatively instantiate a key, related to security/keys/encrypted-keys/encrypted.c, security/keys/trusted.c, and security/keys/user_defined.c.'}] | 2022-01-31T17:51Z | 2016-02-08T03:59Z | Improper Privilege Management | The software does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. | https://cwe.mitre.org/data/definitions/269.html | 0 | David Howells | 2015-11-24 21:36:31+00:00 | KEYS: Fix handling of stored error in a negatively instantiated user key
If a user key gets negatively instantiated, an error code is cached in the
payload area. A negatively instantiated key may be then be positively
instantiated by updating it with valid data. However, the ->update key
type method must be aware that the error code may be there.
The following may be used to trigger the bug in the user key type:
keyctl request2 user user "" @u
keyctl add user user "a" @u
which manifests itself as:
BUG: unable to handle kernel paging request at 00000000ffffff8a
IP: [<ffffffff810a376f>] __call_rcu.constprop.76+0x1f/0x280 kernel/rcu/tree.c:3046
PGD 7cc30067 PUD 0
Oops: 0002 [#1] SMP
Modules linked in:
CPU: 3 PID: 2644 Comm: a.out Not tainted 4.3.0+ #49
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
task: ffff88003ddea700 ti: ffff88003dd88000 task.ti: ffff88003dd88000
RIP: 0010:[<ffffffff810a376f>] [<ffffffff810a376f>] __call_rcu.constprop.76+0x1f/0x280
[<ffffffff810a376f>] __call_rcu.constprop.76+0x1f/0x280 kernel/rcu/tree.c:3046
RSP: 0018:ffff88003dd8bdb0 EFLAGS: 00010246
RAX: 00000000ffffff82 RBX: 0000000000000000 RCX: 0000000000000001
RDX: ffffffff81e3fe40 RSI: 0000000000000000 RDI: 00000000ffffff82
RBP: ffff88003dd8bde0 R08: ffff88007d2d2da0 R09: 0000000000000000
R10: 0000000000000000 R11: ffff88003e8073c0 R12: 00000000ffffff82
R13: ffff88003dd8be68 R14: ffff88007d027600 R15: ffff88003ddea700
FS: 0000000000b92880(0063) GS:ffff88007fd00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 00000000ffffff8a CR3: 000000007cc5f000 CR4: 00000000000006e0
Stack:
ffff88003dd8bdf0 ffffffff81160a8a 0000000000000000 00000000ffffff82
ffff88003dd8be68 ffff88007d027600 ffff88003dd8bdf0 ffffffff810a39e5
ffff88003dd8be20 ffffffff812a31ab ffff88007d027600 ffff88007d027620
Call Trace:
[<ffffffff810a39e5>] kfree_call_rcu+0x15/0x20 kernel/rcu/tree.c:3136
[<ffffffff812a31ab>] user_update+0x8b/0xb0 security/keys/user_defined.c:129
[< inline >] __key_update security/keys/key.c:730
[<ffffffff8129e5c1>] key_create_or_update+0x291/0x440 security/keys/key.c:908
[< inline >] SYSC_add_key security/keys/keyctl.c:125
[<ffffffff8129fc21>] SyS_add_key+0x101/0x1e0 security/keys/keyctl.c:60
[<ffffffff8185f617>] entry_SYSCALL_64_fastpath+0x12/0x6a arch/x86/entry/entry_64.S:185
Note the error code (-ENOKEY) in EDX.
A similar bug can be tripped by:
keyctl request2 trusted user "" @u
keyctl add trusted user "a" @u
This should also affect encrypted keys - but that has to be correctly
parameterised or it will fail with EINVAL before getting to the bit that
will crashes.
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: David Howells <[email protected]>
Acked-by: Mimi Zohar <[email protected]>
Signed-off-by: James Morris <[email protected]> | 096fe9eaea40a17e125569f9e657e34cdb6d73bd | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | trusted_update | trusted_update( struct key * key , struct key_preparsed_payload * prep) | ['key', 'prep'] | static int trusted_update(struct key *key, struct key_preparsed_payload *prep)
{
struct trusted_key_payload *p = key->payload.data[0];
struct trusted_key_payload *new_p;
struct trusted_key_options *new_o;
size_t datalen = prep->datalen;
char *datablob;
int ret = 0;
if (!p->migratable)
return -EPERM;
if (datalen <= 0 || datalen > 32767 || !prep->data)
return -EINVAL;
datablob = kmalloc(datalen + 1, GFP_KERNEL);
if (!datablob)
return -ENOMEM;
new_o = trusted_options_alloc();
if (!new_o) {
ret = -ENOMEM;
goto out;
}
new_p = trusted_payload_alloc(key);
if (!new_p) {
ret = -ENOMEM;
goto out;
}
memcpy(datablob, prep->data, datalen);
datablob[datalen] = '\0';
ret = datablob_parse(datablob, new_p, new_o);
if (ret != Opt_update) {
ret = -EINVAL;
kfree(new_p);
goto out;
}
if (!new_o->keyhandle) {
ret = -EINVAL;
kfree(new_p);
goto out;
}
/* copy old key values, and reseal with new pcrs */
new_p->migratable = p->migratable;
new_p->key_len = p->key_len;
memcpy(new_p->key, p->key, p->key_len);
dump_payload(p);
dump_payload(new_p);
ret = key_seal(new_p, new_o);
if (ret < 0) {
pr_info("trusted_key: key_seal failed (%d)\n", ret);
kfree(new_p);
goto out;
}
if (new_o->pcrlock) {
ret = pcrlock(new_o->pcrlock);
if (ret < 0) {
pr_info("trusted_key: pcrlock failed (%d)\n", ret);
kfree(new_p);
goto out;
}
}
rcu_assign_keypointer(key, new_p);
call_rcu(&p->rcu, trusted_rcu_free);
out:
kfree(datablob);
kfree(new_o);
return ret;
} | 364 | True | 1 |
||
CVE-2015-8539 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.8 | HIGH | 1.8 | 5.9 | nan | [{'url': 'http://www.openwall.com/lists/oss-security/2015/12/09/1', 'name': '[oss-security] 20151208 CVE request - Linux kernel - Fix handling of stored error in a negatively instantiated user key', 'refsource': 'MLIST', 'tags': ['Issue Tracking', 'Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/096fe9eaea40a17e125569f9e657e34cdb6d73bd', 'name': 'https://github.com/torvalds/linux/commit/096fe9eaea40a17e125569f9e657e34cdb6d73bd', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Vendor Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1284450', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1284450', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=096fe9eaea40a17e125569f9e657e34cdb6d73bd', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=096fe9eaea40a17e125569f9e657e34cdb6d73bd', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html', 'name': 'SUSE-SU-2016:1937', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html', 'name': 'SUSE-SU-2016:2074', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.html', 'name': 'SUSE-SU-2016:0911', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html', 'name': 'SUSE-SU-2016:1102', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00017.html', 'name': 'SUSE-SU-2016:0380', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00021.html', 'name': 'SUSE-SU-2016:0386', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00020.html', 'name': 'SUSE-SU-2016:0384', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00009.html', 'name': 'SUSE-SU-2016:0337', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00007.html', 'name': 'SUSE-SU-2016:0335', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00008.html', 'name': 'SUSE-SU-2016:0336', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00022.html', 'name': 'SUSE-SU-2016:0387', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00011.html', 'name': 'SUSE-SU-2016:0339', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00034.html', 'name': 'SUSE-SU-2016:0434', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00018.html', 'name': 'SUSE-SU-2016:0381', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00019.html', 'name': 'SUSE-SU-2016:0383', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'https://access.redhat.com/errata/RHSA-2018:0181', 'name': 'RHSA-2018:0181', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'https://access.redhat.com/errata/RHSA-2018:0152', 'name': 'RHSA-2018:0152', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'https://access.redhat.com/errata/RHSA-2018:0151', 'name': 'RHSA-2018:0151', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'https://usn.ubuntu.com/3798-2/', 'name': 'USN-3798-2', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'https://usn.ubuntu.com/3798-1/', 'name': 'USN-3798-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'CWE-269'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:linux_enterprise_real_time_extension:12:sp1:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.4:rc2:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.4:rc1:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndExcluding': '4.4', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The KEYS subsystem in the Linux kernel before 4.4 allows local users to gain privileges or cause a denial of service (BUG) via crafted keyctl commands that negatively instantiate a key, related to security/keys/encrypted-keys/encrypted.c, security/keys/trusted.c, and security/keys/user_defined.c.'}] | 2022-01-31T17:51Z | 2016-02-08T03:59Z | Improper Privilege Management | The software does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. | https://cwe.mitre.org/data/definitions/269.html | 0 | David Howells | 2015-11-24 21:36:31+00:00 | KEYS: Fix handling of stored error in a negatively instantiated user key
If a user key gets negatively instantiated, an error code is cached in the
payload area. A negatively instantiated key may be then be positively
instantiated by updating it with valid data. However, the ->update key
type method must be aware that the error code may be there.
The following may be used to trigger the bug in the user key type:
keyctl request2 user user "" @u
keyctl add user user "a" @u
which manifests itself as:
BUG: unable to handle kernel paging request at 00000000ffffff8a
IP: [<ffffffff810a376f>] __call_rcu.constprop.76+0x1f/0x280 kernel/rcu/tree.c:3046
PGD 7cc30067 PUD 0
Oops: 0002 [#1] SMP
Modules linked in:
CPU: 3 PID: 2644 Comm: a.out Not tainted 4.3.0+ #49
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
task: ffff88003ddea700 ti: ffff88003dd88000 task.ti: ffff88003dd88000
RIP: 0010:[<ffffffff810a376f>] [<ffffffff810a376f>] __call_rcu.constprop.76+0x1f/0x280
[<ffffffff810a376f>] __call_rcu.constprop.76+0x1f/0x280 kernel/rcu/tree.c:3046
RSP: 0018:ffff88003dd8bdb0 EFLAGS: 00010246
RAX: 00000000ffffff82 RBX: 0000000000000000 RCX: 0000000000000001
RDX: ffffffff81e3fe40 RSI: 0000000000000000 RDI: 00000000ffffff82
RBP: ffff88003dd8bde0 R08: ffff88007d2d2da0 R09: 0000000000000000
R10: 0000000000000000 R11: ffff88003e8073c0 R12: 00000000ffffff82
R13: ffff88003dd8be68 R14: ffff88007d027600 R15: ffff88003ddea700
FS: 0000000000b92880(0063) GS:ffff88007fd00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 00000000ffffff8a CR3: 000000007cc5f000 CR4: 00000000000006e0
Stack:
ffff88003dd8bdf0 ffffffff81160a8a 0000000000000000 00000000ffffff82
ffff88003dd8be68 ffff88007d027600 ffff88003dd8bdf0 ffffffff810a39e5
ffff88003dd8be20 ffffffff812a31ab ffff88007d027600 ffff88007d027620
Call Trace:
[<ffffffff810a39e5>] kfree_call_rcu+0x15/0x20 kernel/rcu/tree.c:3136
[<ffffffff812a31ab>] user_update+0x8b/0xb0 security/keys/user_defined.c:129
[< inline >] __key_update security/keys/key.c:730
[<ffffffff8129e5c1>] key_create_or_update+0x291/0x440 security/keys/key.c:908
[< inline >] SYSC_add_key security/keys/keyctl.c:125
[<ffffffff8129fc21>] SyS_add_key+0x101/0x1e0 security/keys/keyctl.c:60
[<ffffffff8185f617>] entry_SYSCALL_64_fastpath+0x12/0x6a arch/x86/entry/entry_64.S:185
Note the error code (-ENOKEY) in EDX.
A similar bug can be tripped by:
keyctl request2 trusted user "" @u
keyctl add trusted user "a" @u
This should also affect encrypted keys - but that has to be correctly
parameterised or it will fail with EINVAL before getting to the bit that
will crashes.
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: David Howells <[email protected]>
Acked-by: Mimi Zohar <[email protected]>
Signed-off-by: James Morris <[email protected]> | 096fe9eaea40a17e125569f9e657e34cdb6d73bd | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | user_update | user_update( struct key * key , struct key_preparsed_payload * prep) | ['key', 'prep'] | int user_update(struct key *key, struct key_preparsed_payload *prep)
{
struct user_key_payload *upayload, *zap;
size_t datalen = prep->datalen;
int ret;
ret = -EINVAL;
if (datalen <= 0 || datalen > 32767 || !prep->data)
goto error;
/* construct a replacement payload */
ret = -ENOMEM;
upayload = kmalloc(sizeof(*upayload) + datalen, GFP_KERNEL);
if (!upayload)
goto error;
upayload->datalen = datalen;
memcpy(upayload->data, prep->data, datalen);
/* check the quota and attach the new data */
zap = upayload;
ret = key_payload_reserve(key, datalen);
if (ret == 0) {
/* attach the new data, displacing the old */
zap = key->payload.data[0];
rcu_assign_keypointer(key, upayload);
key->expiry = 0;
}
if (zap)
kfree_rcu(zap, rcu);
error:
return ret;
} | 163 | True | 1 |
||
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | dccp_v6_connect | dccp_v6_connect( struct sock * sk , struct sockaddr * uaddr , int addr_len) | ['sk', 'uaddr', 'addr_len'] | static int dccp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
int addr_len)
{
struct sockaddr_in6 *usin = (struct sockaddr_in6 *)uaddr;
struct inet_connection_sock *icsk = inet_csk(sk);
struct inet_sock *inet = inet_sk(sk);
struct ipv6_pinfo *np = inet6_sk(sk);
struct dccp_sock *dp = dccp_sk(sk);
struct in6_addr *saddr = NULL, *final_p, final;
struct flowi6 fl6;
struct dst_entry *dst;
int addr_type;
int err;
dp->dccps_role = DCCP_ROLE_CLIENT;
if (addr_len < SIN6_LEN_RFC2133)
return -EINVAL;
if (usin->sin6_family != AF_INET6)
return -EAFNOSUPPORT;
memset(&fl6, 0, sizeof(fl6));
if (np->sndflow) {
fl6.flowlabel = usin->sin6_flowinfo & IPV6_FLOWINFO_MASK;
IP6_ECN_flow_init(fl6.flowlabel);
if (fl6.flowlabel & IPV6_FLOWLABEL_MASK) {
struct ip6_flowlabel *flowlabel;
flowlabel = fl6_sock_lookup(sk, fl6.flowlabel);
if (flowlabel == NULL)
return -EINVAL;
fl6_sock_release(flowlabel);
}
}
/*
* connect() to INADDR_ANY means loopback (BSD'ism).
*/
if (ipv6_addr_any(&usin->sin6_addr))
usin->sin6_addr.s6_addr[15] = 1;
addr_type = ipv6_addr_type(&usin->sin6_addr);
if (addr_type & IPV6_ADDR_MULTICAST)
return -ENETUNREACH;
if (addr_type & IPV6_ADDR_LINKLOCAL) {
if (addr_len >= sizeof(struct sockaddr_in6) &&
usin->sin6_scope_id) {
/* If interface is set while binding, indices
* must coincide.
*/
if (sk->sk_bound_dev_if &&
sk->sk_bound_dev_if != usin->sin6_scope_id)
return -EINVAL;
sk->sk_bound_dev_if = usin->sin6_scope_id;
}
/* Connect to link-local address requires an interface */
if (!sk->sk_bound_dev_if)
return -EINVAL;
}
sk->sk_v6_daddr = usin->sin6_addr;
np->flow_label = fl6.flowlabel;
/*
* DCCP over IPv4
*/
if (addr_type == IPV6_ADDR_MAPPED) {
u32 exthdrlen = icsk->icsk_ext_hdr_len;
struct sockaddr_in sin;
SOCK_DEBUG(sk, "connect: ipv4 mapped\n");
if (__ipv6_only_sock(sk))
return -ENETUNREACH;
sin.sin_family = AF_INET;
sin.sin_port = usin->sin6_port;
sin.sin_addr.s_addr = usin->sin6_addr.s6_addr32[3];
icsk->icsk_af_ops = &dccp_ipv6_mapped;
sk->sk_backlog_rcv = dccp_v4_do_rcv;
err = dccp_v4_connect(sk, (struct sockaddr *)&sin, sizeof(sin));
if (err) {
icsk->icsk_ext_hdr_len = exthdrlen;
icsk->icsk_af_ops = &dccp_ipv6_af_ops;
sk->sk_backlog_rcv = dccp_v6_do_rcv;
goto failure;
}
np->saddr = sk->sk_v6_rcv_saddr;
return err;
}
if (!ipv6_addr_any(&sk->sk_v6_rcv_saddr))
saddr = &sk->sk_v6_rcv_saddr;
fl6.flowi6_proto = IPPROTO_DCCP;
fl6.daddr = sk->sk_v6_daddr;
fl6.saddr = saddr ? *saddr : np->saddr;
fl6.flowi6_oif = sk->sk_bound_dev_if;
fl6.fl6_dport = usin->sin6_port;
fl6.fl6_sport = inet->inet_sport;
security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
final_p = fl6_update_dst(&fl6, np->opt, &final);
dst = ip6_dst_lookup_flow(sk, &fl6, final_p);
if (IS_ERR(dst)) {
err = PTR_ERR(dst);
goto failure;
}
if (saddr == NULL) {
saddr = &fl6.saddr;
sk->sk_v6_rcv_saddr = *saddr;
}
/* set the source address */
np->saddr = *saddr;
inet->inet_rcv_saddr = LOOPBACK4_IPV6;
__ip6_dst_store(sk, dst, NULL, NULL);
icsk->icsk_ext_hdr_len = 0;
if (np->opt != NULL)
icsk->icsk_ext_hdr_len = (np->opt->opt_flen +
np->opt->opt_nflen);
inet->inet_dport = usin->sin6_port;
dccp_set_state(sk, DCCP_REQUESTING);
err = inet6_hash_connect(&dccp_death_row, sk);
if (err)
goto late_failure;
dp->dccps_iss = secure_dccpv6_sequence_number(np->saddr.s6_addr32,
sk->sk_v6_daddr.s6_addr32,
inet->inet_sport,
inet->inet_dport);
err = dccp_connect(sk);
if (err)
goto late_failure;
return 0;
late_failure:
dccp_set_state(sk, DCCP_CLOSED);
__sk_dst_reset(sk);
failure:
inet->inet_dport = 0;
sk->sk_route_caps = 0;
return err;
} | 770 | True | 1 |
||
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Use After Free | Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. |
The use of previously-freed memory can have any number of adverse consequences, ranging from the corruption of valid data to the execution of arbitrary code, depending on the instantiation and timing of the flaw. The simplest way data corruption may occur involves the system's reuse of the freed memory. Use-after-free errors have two common and sometimes overlapping causes:
Error conditions and other exceptional circumstances.
Confusion over which part of the program is responsible for freeing the memory.
In this scenario, the memory in question is allocated to another pointer validly at some point after it has been freed. The original pointer to the freed memory is used again and points to somewhere within the new allocation. As the data is changed, it corrupts the validly used memory; this induces undefined behavior in the process.
If the newly allocated data chances to hold a class, in C++ for example, various function pointers may be scattered within the heap data. If one of these function pointers is overwritten with an address to valid shellcode, execution of arbitrary code can be achieved.
| https://cwe.mitre.org/data/definitions/416.html | 0 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | dccp_v6_connect | dccp_v6_connect( struct sock * sk , struct sockaddr * uaddr , int addr_len) | ['sk', 'uaddr', 'addr_len'] | static int dccp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
int addr_len)
{
struct sockaddr_in6 *usin = (struct sockaddr_in6 *)uaddr;
struct inet_connection_sock *icsk = inet_csk(sk);
struct inet_sock *inet = inet_sk(sk);
struct ipv6_pinfo *np = inet6_sk(sk);
struct dccp_sock *dp = dccp_sk(sk);
struct in6_addr *saddr = NULL, *final_p, final;
struct flowi6 fl6;
struct dst_entry *dst;
int addr_type;
int err;
dp->dccps_role = DCCP_ROLE_CLIENT;
if (addr_len < SIN6_LEN_RFC2133)
return -EINVAL;
if (usin->sin6_family != AF_INET6)
return -EAFNOSUPPORT;
memset(&fl6, 0, sizeof(fl6));
if (np->sndflow) {
fl6.flowlabel = usin->sin6_flowinfo & IPV6_FLOWINFO_MASK;
IP6_ECN_flow_init(fl6.flowlabel);
if (fl6.flowlabel & IPV6_FLOWLABEL_MASK) {
struct ip6_flowlabel *flowlabel;
flowlabel = fl6_sock_lookup(sk, fl6.flowlabel);
if (flowlabel == NULL)
return -EINVAL;
fl6_sock_release(flowlabel);
}
}
/*
* connect() to INADDR_ANY means loopback (BSD'ism).
*/
if (ipv6_addr_any(&usin->sin6_addr))
usin->sin6_addr.s6_addr[15] = 1;
addr_type = ipv6_addr_type(&usin->sin6_addr);
if (addr_type & IPV6_ADDR_MULTICAST)
return -ENETUNREACH;
if (addr_type & IPV6_ADDR_LINKLOCAL) {
if (addr_len >= sizeof(struct sockaddr_in6) &&
usin->sin6_scope_id) {
/* If interface is set while binding, indices
* must coincide.
*/
if (sk->sk_bound_dev_if &&
sk->sk_bound_dev_if != usin->sin6_scope_id)
return -EINVAL;
sk->sk_bound_dev_if = usin->sin6_scope_id;
}
/* Connect to link-local address requires an interface */
if (!sk->sk_bound_dev_if)
return -EINVAL;
}
sk->sk_v6_daddr = usin->sin6_addr;
np->flow_label = fl6.flowlabel;
/*
* DCCP over IPv4
*/
if (addr_type == IPV6_ADDR_MAPPED) {
u32 exthdrlen = icsk->icsk_ext_hdr_len;
struct sockaddr_in sin;
SOCK_DEBUG(sk, "connect: ipv4 mapped\n");
if (__ipv6_only_sock(sk))
return -ENETUNREACH;
sin.sin_family = AF_INET;
sin.sin_port = usin->sin6_port;
sin.sin_addr.s_addr = usin->sin6_addr.s6_addr32[3];
icsk->icsk_af_ops = &dccp_ipv6_mapped;
sk->sk_backlog_rcv = dccp_v4_do_rcv;
err = dccp_v4_connect(sk, (struct sockaddr *)&sin, sizeof(sin));
if (err) {
icsk->icsk_ext_hdr_len = exthdrlen;
icsk->icsk_af_ops = &dccp_ipv6_af_ops;
sk->sk_backlog_rcv = dccp_v6_do_rcv;
goto failure;
}
np->saddr = sk->sk_v6_rcv_saddr;
return err;
}
if (!ipv6_addr_any(&sk->sk_v6_rcv_saddr))
saddr = &sk->sk_v6_rcv_saddr;
fl6.flowi6_proto = IPPROTO_DCCP;
fl6.daddr = sk->sk_v6_daddr;
fl6.saddr = saddr ? *saddr : np->saddr;
fl6.flowi6_oif = sk->sk_bound_dev_if;
fl6.fl6_dport = usin->sin6_port;
fl6.fl6_sport = inet->inet_sport;
security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
final_p = fl6_update_dst(&fl6, np->opt, &final);
dst = ip6_dst_lookup_flow(sk, &fl6, final_p);
if (IS_ERR(dst)) {
err = PTR_ERR(dst);
goto failure;
}
if (saddr == NULL) {
saddr = &fl6.saddr;
sk->sk_v6_rcv_saddr = *saddr;
}
/* set the source address */
np->saddr = *saddr;
inet->inet_rcv_saddr = LOOPBACK4_IPV6;
__ip6_dst_store(sk, dst, NULL, NULL);
icsk->icsk_ext_hdr_len = 0;
if (np->opt != NULL)
icsk->icsk_ext_hdr_len = (np->opt->opt_flen +
np->opt->opt_nflen);
inet->inet_dport = usin->sin6_port;
dccp_set_state(sk, DCCP_REQUESTING);
err = inet6_hash_connect(&dccp_death_row, sk);
if (err)
goto late_failure;
dp->dccps_iss = secure_dccpv6_sequence_number(np->saddr.s6_addr32,
sk->sk_v6_daddr.s6_addr32,
inet->inet_sport,
inet->inet_dport);
err = dccp_connect(sk);
if (err)
goto late_failure;
return 0;
late_failure:
dccp_set_state(sk, DCCP_CLOSED);
__sk_dst_reset(sk);
failure:
inet->inet_dport = 0;
sk->sk_route_caps = 0;
return err;
} | 770 | True | 1 |
|
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | dccp_v6_request_recv_sock | dccp_v6_request_recv_sock( const struct sock * sk , struct sk_buff * skb , struct request_sock * req , struct dst_entry * dst , struct request_sock * req_unhash , bool * own_req) | ['sk', 'skb', 'req', 'dst', 'req_unhash', 'own_req'] | static struct sock *dccp_v6_request_recv_sock(const struct sock *sk,
struct sk_buff *skb,
struct request_sock *req,
struct dst_entry *dst,
struct request_sock *req_unhash,
bool *own_req)
{
struct inet_request_sock *ireq = inet_rsk(req);
struct ipv6_pinfo *newnp;
const struct ipv6_pinfo *np = inet6_sk(sk);
struct inet_sock *newinet;
struct dccp6_sock *newdp6;
struct sock *newsk;
if (skb->protocol == htons(ETH_P_IP)) {
/*
* v6 mapped
*/
newsk = dccp_v4_request_recv_sock(sk, skb, req, dst,
req_unhash, own_req);
if (newsk == NULL)
return NULL;
newdp6 = (struct dccp6_sock *)newsk;
newinet = inet_sk(newsk);
newinet->pinet6 = &newdp6->inet6;
newnp = inet6_sk(newsk);
memcpy(newnp, np, sizeof(struct ipv6_pinfo));
newnp->saddr = newsk->sk_v6_rcv_saddr;
inet_csk(newsk)->icsk_af_ops = &dccp_ipv6_mapped;
newsk->sk_backlog_rcv = dccp_v4_do_rcv;
newnp->pktoptions = NULL;
newnp->opt = NULL;
newnp->mcast_oif = inet6_iif(skb);
newnp->mcast_hops = ipv6_hdr(skb)->hop_limit;
/*
* No need to charge this sock to the relevant IPv6 refcnt debug socks count
* here, dccp_create_openreq_child now does this for us, see the comment in
* that function for the gory details. -acme
*/
/* It is tricky place. Until this moment IPv4 tcp
worked with IPv6 icsk.icsk_af_ops.
Sync it now.
*/
dccp_sync_mss(newsk, inet_csk(newsk)->icsk_pmtu_cookie);
return newsk;
}
if (sk_acceptq_is_full(sk))
goto out_overflow;
if (!dst) {
struct flowi6 fl6;
dst = inet6_csk_route_req(sk, &fl6, req, IPPROTO_DCCP);
if (!dst)
goto out;
}
newsk = dccp_create_openreq_child(sk, req, skb);
if (newsk == NULL)
goto out_nonewsk;
/*
* No need to charge this sock to the relevant IPv6 refcnt debug socks
* count here, dccp_create_openreq_child now does this for us, see the
* comment in that function for the gory details. -acme
*/
__ip6_dst_store(newsk, dst, NULL, NULL);
newsk->sk_route_caps = dst->dev->features & ~(NETIF_F_IP_CSUM |
NETIF_F_TSO);
newdp6 = (struct dccp6_sock *)newsk;
newinet = inet_sk(newsk);
newinet->pinet6 = &newdp6->inet6;
newnp = inet6_sk(newsk);
memcpy(newnp, np, sizeof(struct ipv6_pinfo));
newsk->sk_v6_daddr = ireq->ir_v6_rmt_addr;
newnp->saddr = ireq->ir_v6_loc_addr;
newsk->sk_v6_rcv_saddr = ireq->ir_v6_loc_addr;
newsk->sk_bound_dev_if = ireq->ir_iif;
/* Now IPv6 options...
First: no IPv4 options.
*/
newinet->inet_opt = NULL;
/* Clone RX bits */
newnp->rxopt.all = np->rxopt.all;
newnp->pktoptions = NULL;
newnp->opt = NULL;
newnp->mcast_oif = inet6_iif(skb);
newnp->mcast_hops = ipv6_hdr(skb)->hop_limit;
/*
* Clone native IPv6 options from listening socket (if any)
*
* Yes, keeping reference count would be much more clever, but we make
* one more one thing there: reattach optmem to newsk.
*/
if (np->opt != NULL)
newnp->opt = ipv6_dup_options(newsk, np->opt);
inet_csk(newsk)->icsk_ext_hdr_len = 0;
if (newnp->opt != NULL)
inet_csk(newsk)->icsk_ext_hdr_len = (newnp->opt->opt_nflen +
newnp->opt->opt_flen);
dccp_sync_mss(newsk, dst_mtu(dst));
newinet->inet_daddr = newinet->inet_saddr = LOOPBACK4_IPV6;
newinet->inet_rcv_saddr = LOOPBACK4_IPV6;
if (__inet_inherit_port(sk, newsk) < 0) {
inet_csk_prepare_forced_close(newsk);
dccp_done(newsk);
goto out;
}
*own_req = inet_ehash_nolisten(newsk, req_to_sk(req_unhash));
/* Clone pktoptions received with SYN, if we own the req */
if (*own_req && ireq->pktopts) {
newnp->pktoptions = skb_clone(ireq->pktopts, GFP_ATOMIC);
consume_skb(ireq->pktopts);
ireq->pktopts = NULL;
if (newnp->pktoptions)
skb_set_owner_r(newnp->pktoptions, newsk);
}
return newsk;
out_overflow:
NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_LISTENOVERFLOWS);
out_nonewsk:
dst_release(dst);
out:
NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_LISTENDROPS);
return NULL;
} | 660 | True | 1 |
||
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Use After Free | Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. |
The use of previously-freed memory can have any number of adverse consequences, ranging from the corruption of valid data to the execution of arbitrary code, depending on the instantiation and timing of the flaw. The simplest way data corruption may occur involves the system's reuse of the freed memory. Use-after-free errors have two common and sometimes overlapping causes:
Error conditions and other exceptional circumstances.
Confusion over which part of the program is responsible for freeing the memory.
In this scenario, the memory in question is allocated to another pointer validly at some point after it has been freed. The original pointer to the freed memory is used again and points to somewhere within the new allocation. As the data is changed, it corrupts the validly used memory; this induces undefined behavior in the process.
If the newly allocated data chances to hold a class, in C++ for example, various function pointers may be scattered within the heap data. If one of these function pointers is overwritten with an address to valid shellcode, execution of arbitrary code can be achieved.
| https://cwe.mitre.org/data/definitions/416.html | 0 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | dccp_v6_request_recv_sock | dccp_v6_request_recv_sock( const struct sock * sk , struct sk_buff * skb , struct request_sock * req , struct dst_entry * dst , struct request_sock * req_unhash , bool * own_req) | ['sk', 'skb', 'req', 'dst', 'req_unhash', 'own_req'] | static struct sock *dccp_v6_request_recv_sock(const struct sock *sk,
struct sk_buff *skb,
struct request_sock *req,
struct dst_entry *dst,
struct request_sock *req_unhash,
bool *own_req)
{
struct inet_request_sock *ireq = inet_rsk(req);
struct ipv6_pinfo *newnp;
const struct ipv6_pinfo *np = inet6_sk(sk);
struct inet_sock *newinet;
struct dccp6_sock *newdp6;
struct sock *newsk;
if (skb->protocol == htons(ETH_P_IP)) {
/*
* v6 mapped
*/
newsk = dccp_v4_request_recv_sock(sk, skb, req, dst,
req_unhash, own_req);
if (newsk == NULL)
return NULL;
newdp6 = (struct dccp6_sock *)newsk;
newinet = inet_sk(newsk);
newinet->pinet6 = &newdp6->inet6;
newnp = inet6_sk(newsk);
memcpy(newnp, np, sizeof(struct ipv6_pinfo));
newnp->saddr = newsk->sk_v6_rcv_saddr;
inet_csk(newsk)->icsk_af_ops = &dccp_ipv6_mapped;
newsk->sk_backlog_rcv = dccp_v4_do_rcv;
newnp->pktoptions = NULL;
newnp->opt = NULL;
newnp->mcast_oif = inet6_iif(skb);
newnp->mcast_hops = ipv6_hdr(skb)->hop_limit;
/*
* No need to charge this sock to the relevant IPv6 refcnt debug socks count
* here, dccp_create_openreq_child now does this for us, see the comment in
* that function for the gory details. -acme
*/
/* It is tricky place. Until this moment IPv4 tcp
worked with IPv6 icsk.icsk_af_ops.
Sync it now.
*/
dccp_sync_mss(newsk, inet_csk(newsk)->icsk_pmtu_cookie);
return newsk;
}
if (sk_acceptq_is_full(sk))
goto out_overflow;
if (!dst) {
struct flowi6 fl6;
dst = inet6_csk_route_req(sk, &fl6, req, IPPROTO_DCCP);
if (!dst)
goto out;
}
newsk = dccp_create_openreq_child(sk, req, skb);
if (newsk == NULL)
goto out_nonewsk;
/*
* No need to charge this sock to the relevant IPv6 refcnt debug socks
* count here, dccp_create_openreq_child now does this for us, see the
* comment in that function for the gory details. -acme
*/
__ip6_dst_store(newsk, dst, NULL, NULL);
newsk->sk_route_caps = dst->dev->features & ~(NETIF_F_IP_CSUM |
NETIF_F_TSO);
newdp6 = (struct dccp6_sock *)newsk;
newinet = inet_sk(newsk);
newinet->pinet6 = &newdp6->inet6;
newnp = inet6_sk(newsk);
memcpy(newnp, np, sizeof(struct ipv6_pinfo));
newsk->sk_v6_daddr = ireq->ir_v6_rmt_addr;
newnp->saddr = ireq->ir_v6_loc_addr;
newsk->sk_v6_rcv_saddr = ireq->ir_v6_loc_addr;
newsk->sk_bound_dev_if = ireq->ir_iif;
/* Now IPv6 options...
First: no IPv4 options.
*/
newinet->inet_opt = NULL;
/* Clone RX bits */
newnp->rxopt.all = np->rxopt.all;
newnp->pktoptions = NULL;
newnp->opt = NULL;
newnp->mcast_oif = inet6_iif(skb);
newnp->mcast_hops = ipv6_hdr(skb)->hop_limit;
/*
* Clone native IPv6 options from listening socket (if any)
*
* Yes, keeping reference count would be much more clever, but we make
* one more one thing there: reattach optmem to newsk.
*/
if (np->opt != NULL)
newnp->opt = ipv6_dup_options(newsk, np->opt);
inet_csk(newsk)->icsk_ext_hdr_len = 0;
if (newnp->opt != NULL)
inet_csk(newsk)->icsk_ext_hdr_len = (newnp->opt->opt_nflen +
newnp->opt->opt_flen);
dccp_sync_mss(newsk, dst_mtu(dst));
newinet->inet_daddr = newinet->inet_saddr = LOOPBACK4_IPV6;
newinet->inet_rcv_saddr = LOOPBACK4_IPV6;
if (__inet_inherit_port(sk, newsk) < 0) {
inet_csk_prepare_forced_close(newsk);
dccp_done(newsk);
goto out;
}
*own_req = inet_ehash_nolisten(newsk, req_to_sk(req_unhash));
/* Clone pktoptions received with SYN, if we own the req */
if (*own_req && ireq->pktopts) {
newnp->pktoptions = skb_clone(ireq->pktopts, GFP_ATOMIC);
consume_skb(ireq->pktopts);
ireq->pktopts = NULL;
if (newnp->pktoptions)
skb_set_owner_r(newnp->pktoptions, newsk);
}
return newsk;
out_overflow:
NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_LISTENOVERFLOWS);
out_nonewsk:
dst_release(dst);
out:
NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_LISTENDROPS);
return NULL;
} | 660 | True | 1 |
|
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | dccp_v6_send_response | dccp_v6_send_response( const struct sock * sk , struct request_sock * req) | ['sk', 'req'] | static int dccp_v6_send_response(const struct sock *sk, struct request_sock *req)
{
struct inet_request_sock *ireq = inet_rsk(req);
struct ipv6_pinfo *np = inet6_sk(sk);
struct sk_buff *skb;
struct in6_addr *final_p, final;
struct flowi6 fl6;
int err = -1;
struct dst_entry *dst;
memset(&fl6, 0, sizeof(fl6));
fl6.flowi6_proto = IPPROTO_DCCP;
fl6.daddr = ireq->ir_v6_rmt_addr;
fl6.saddr = ireq->ir_v6_loc_addr;
fl6.flowlabel = 0;
fl6.flowi6_oif = ireq->ir_iif;
fl6.fl6_dport = ireq->ir_rmt_port;
fl6.fl6_sport = htons(ireq->ir_num);
security_req_classify_flow(req, flowi6_to_flowi(&fl6));
final_p = fl6_update_dst(&fl6, np->opt, &final);
dst = ip6_dst_lookup_flow(sk, &fl6, final_p);
if (IS_ERR(dst)) {
err = PTR_ERR(dst);
dst = NULL;
goto done;
}
skb = dccp_make_response(sk, dst, req);
if (skb != NULL) {
struct dccp_hdr *dh = dccp_hdr(skb);
dh->dccph_checksum = dccp_v6_csum_finish(skb,
&ireq->ir_v6_loc_addr,
&ireq->ir_v6_rmt_addr);
fl6.daddr = ireq->ir_v6_rmt_addr;
err = ip6_xmit(sk, skb, &fl6, np->opt, np->tclass);
err = net_xmit_eval(err);
}
done:
dst_release(dst);
return err;
} | 284 | True | 1 |
||
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Use After Free | Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. |
The use of previously-freed memory can have any number of adverse consequences, ranging from the corruption of valid data to the execution of arbitrary code, depending on the instantiation and timing of the flaw. The simplest way data corruption may occur involves the system's reuse of the freed memory. Use-after-free errors have two common and sometimes overlapping causes:
Error conditions and other exceptional circumstances.
Confusion over which part of the program is responsible for freeing the memory.
In this scenario, the memory in question is allocated to another pointer validly at some point after it has been freed. The original pointer to the freed memory is used again and points to somewhere within the new allocation. As the data is changed, it corrupts the validly used memory; this induces undefined behavior in the process.
If the newly allocated data chances to hold a class, in C++ for example, various function pointers may be scattered within the heap data. If one of these function pointers is overwritten with an address to valid shellcode, execution of arbitrary code can be achieved.
| https://cwe.mitre.org/data/definitions/416.html | 0 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | dccp_v6_send_response | dccp_v6_send_response( const struct sock * sk , struct request_sock * req) | ['sk', 'req'] | static int dccp_v6_send_response(const struct sock *sk, struct request_sock *req)
{
struct inet_request_sock *ireq = inet_rsk(req);
struct ipv6_pinfo *np = inet6_sk(sk);
struct sk_buff *skb;
struct in6_addr *final_p, final;
struct flowi6 fl6;
int err = -1;
struct dst_entry *dst;
memset(&fl6, 0, sizeof(fl6));
fl6.flowi6_proto = IPPROTO_DCCP;
fl6.daddr = ireq->ir_v6_rmt_addr;
fl6.saddr = ireq->ir_v6_loc_addr;
fl6.flowlabel = 0;
fl6.flowi6_oif = ireq->ir_iif;
fl6.fl6_dport = ireq->ir_rmt_port;
fl6.fl6_sport = htons(ireq->ir_num);
security_req_classify_flow(req, flowi6_to_flowi(&fl6));
final_p = fl6_update_dst(&fl6, np->opt, &final);
dst = ip6_dst_lookup_flow(sk, &fl6, final_p);
if (IS_ERR(dst)) {
err = PTR_ERR(dst);
dst = NULL;
goto done;
}
skb = dccp_make_response(sk, dst, req);
if (skb != NULL) {
struct dccp_hdr *dh = dccp_hdr(skb);
dh->dccph_checksum = dccp_v6_csum_finish(skb,
&ireq->ir_v6_loc_addr,
&ireq->ir_v6_rmt_addr);
fl6.daddr = ireq->ir_v6_rmt_addr;
err = ip6_xmit(sk, skb, &fl6, np->opt, np->tclass);
err = net_xmit_eval(err);
}
done:
dst_release(dst);
return err;
} | 284 | True | 1 |
|
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | inet6_destroy_sock | inet6_destroy_sock( struct sock * sk) | ['sk'] | void inet6_destroy_sock(struct sock *sk)
{
struct ipv6_pinfo *np = inet6_sk(sk);
struct sk_buff *skb;
struct ipv6_txoptions *opt;
/* Release rx options */
skb = xchg(&np->pktoptions, NULL);
if (skb)
kfree_skb(skb);
skb = xchg(&np->rxpmtu, NULL);
if (skb)
kfree_skb(skb);
/* Free flowlabels */
fl6_free_socklist(sk);
/* Free tx options */
opt = xchg(&np->opt, NULL);
if (opt)
sock_kfree_s(sk, opt, opt->tot_len);
} | 103 | True | 1 |
||
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Use After Free | Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. |
The use of previously-freed memory can have any number of adverse consequences, ranging from the corruption of valid data to the execution of arbitrary code, depending on the instantiation and timing of the flaw. The simplest way data corruption may occur involves the system's reuse of the freed memory. Use-after-free errors have two common and sometimes overlapping causes:
Error conditions and other exceptional circumstances.
Confusion over which part of the program is responsible for freeing the memory.
In this scenario, the memory in question is allocated to another pointer validly at some point after it has been freed. The original pointer to the freed memory is used again and points to somewhere within the new allocation. As the data is changed, it corrupts the validly used memory; this induces undefined behavior in the process.
If the newly allocated data chances to hold a class, in C++ for example, various function pointers may be scattered within the heap data. If one of these function pointers is overwritten with an address to valid shellcode, execution of arbitrary code can be achieved.
| https://cwe.mitre.org/data/definitions/416.html | 0 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | inet6_destroy_sock | inet6_destroy_sock( struct sock * sk) | ['sk'] | void inet6_destroy_sock(struct sock *sk)
{
struct ipv6_pinfo *np = inet6_sk(sk);
struct sk_buff *skb;
struct ipv6_txoptions *opt;
/* Release rx options */
skb = xchg(&np->pktoptions, NULL);
if (skb)
kfree_skb(skb);
skb = xchg(&np->rxpmtu, NULL);
if (skb)
kfree_skb(skb);
/* Free flowlabels */
fl6_free_socklist(sk);
/* Free tx options */
opt = xchg(&np->opt, NULL);
if (opt)
sock_kfree_s(sk, opt, opt->tot_len);
} | 103 | True | 1 |
|
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | inet6_sk_rebuild_header | inet6_sk_rebuild_header( struct sock * sk) | ['sk'] | int inet6_sk_rebuild_header(struct sock *sk)
{
struct ipv6_pinfo *np = inet6_sk(sk);
struct dst_entry *dst;
dst = __sk_dst_check(sk, np->dst_cookie);
if (!dst) {
struct inet_sock *inet = inet_sk(sk);
struct in6_addr *final_p, final;
struct flowi6 fl6;
memset(&fl6, 0, sizeof(fl6));
fl6.flowi6_proto = sk->sk_protocol;
fl6.daddr = sk->sk_v6_daddr;
fl6.saddr = np->saddr;
fl6.flowlabel = np->flow_label;
fl6.flowi6_oif = sk->sk_bound_dev_if;
fl6.flowi6_mark = sk->sk_mark;
fl6.fl6_dport = inet->inet_dport;
fl6.fl6_sport = inet->inet_sport;
security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
final_p = fl6_update_dst(&fl6, np->opt, &final);
dst = ip6_dst_lookup_flow(sk, &fl6, final_p);
if (IS_ERR(dst)) {
sk->sk_route_caps = 0;
sk->sk_err_soft = -PTR_ERR(dst);
return PTR_ERR(dst);
}
__ip6_dst_store(sk, dst, NULL, NULL);
}
return 0;
} | 223 | True | 1 |
||
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Use After Free | Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. |
The use of previously-freed memory can have any number of adverse consequences, ranging from the corruption of valid data to the execution of arbitrary code, depending on the instantiation and timing of the flaw. The simplest way data corruption may occur involves the system's reuse of the freed memory. Use-after-free errors have two common and sometimes overlapping causes:
Error conditions and other exceptional circumstances.
Confusion over which part of the program is responsible for freeing the memory.
In this scenario, the memory in question is allocated to another pointer validly at some point after it has been freed. The original pointer to the freed memory is used again and points to somewhere within the new allocation. As the data is changed, it corrupts the validly used memory; this induces undefined behavior in the process.
If the newly allocated data chances to hold a class, in C++ for example, various function pointers may be scattered within the heap data. If one of these function pointers is overwritten with an address to valid shellcode, execution of arbitrary code can be achieved.
| https://cwe.mitre.org/data/definitions/416.html | 0 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | inet6_sk_rebuild_header | inet6_sk_rebuild_header( struct sock * sk) | ['sk'] | int inet6_sk_rebuild_header(struct sock *sk)
{
struct ipv6_pinfo *np = inet6_sk(sk);
struct dst_entry *dst;
dst = __sk_dst_check(sk, np->dst_cookie);
if (!dst) {
struct inet_sock *inet = inet_sk(sk);
struct in6_addr *final_p, final;
struct flowi6 fl6;
memset(&fl6, 0, sizeof(fl6));
fl6.flowi6_proto = sk->sk_protocol;
fl6.daddr = sk->sk_v6_daddr;
fl6.saddr = np->saddr;
fl6.flowlabel = np->flow_label;
fl6.flowi6_oif = sk->sk_bound_dev_if;
fl6.flowi6_mark = sk->sk_mark;
fl6.fl6_dport = inet->inet_dport;
fl6.fl6_sport = inet->inet_sport;
security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
final_p = fl6_update_dst(&fl6, np->opt, &final);
dst = ip6_dst_lookup_flow(sk, &fl6, final_p);
if (IS_ERR(dst)) {
sk->sk_route_caps = 0;
sk->sk_err_soft = -PTR_ERR(dst);
return PTR_ERR(dst);
}
__ip6_dst_store(sk, dst, NULL, NULL);
}
return 0;
} | 223 | True | 1 |
|
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | __ip6_datagram_connect | __ip6_datagram_connect( struct sock * sk , struct sockaddr * uaddr , int addr_len) | ['sk', 'uaddr', 'addr_len'] | static int __ip6_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
{
struct sockaddr_in6 *usin = (struct sockaddr_in6 *) uaddr;
struct inet_sock *inet = inet_sk(sk);
struct ipv6_pinfo *np = inet6_sk(sk);
struct in6_addr *daddr, *final_p, final;
struct dst_entry *dst;
struct flowi6 fl6;
struct ip6_flowlabel *flowlabel = NULL;
struct ipv6_txoptions *opt;
int addr_type;
int err;
if (usin->sin6_family == AF_INET) {
if (__ipv6_only_sock(sk))
return -EAFNOSUPPORT;
err = __ip4_datagram_connect(sk, uaddr, addr_len);
goto ipv4_connected;
}
if (addr_len < SIN6_LEN_RFC2133)
return -EINVAL;
if (usin->sin6_family != AF_INET6)
return -EAFNOSUPPORT;
memset(&fl6, 0, sizeof(fl6));
if (np->sndflow) {
fl6.flowlabel = usin->sin6_flowinfo&IPV6_FLOWINFO_MASK;
if (fl6.flowlabel&IPV6_FLOWLABEL_MASK) {
flowlabel = fl6_sock_lookup(sk, fl6.flowlabel);
if (!flowlabel)
return -EINVAL;
}
}
addr_type = ipv6_addr_type(&usin->sin6_addr);
if (addr_type == IPV6_ADDR_ANY) {
/*
* connect to self
*/
usin->sin6_addr.s6_addr[15] = 0x01;
}
daddr = &usin->sin6_addr;
if (addr_type == IPV6_ADDR_MAPPED) {
struct sockaddr_in sin;
if (__ipv6_only_sock(sk)) {
err = -ENETUNREACH;
goto out;
}
sin.sin_family = AF_INET;
sin.sin_addr.s_addr = daddr->s6_addr32[3];
sin.sin_port = usin->sin6_port;
err = __ip4_datagram_connect(sk,
(struct sockaddr *) &sin,
sizeof(sin));
ipv4_connected:
if (err)
goto out;
ipv6_addr_set_v4mapped(inet->inet_daddr, &sk->sk_v6_daddr);
if (ipv6_addr_any(&np->saddr) ||
ipv6_mapped_addr_any(&np->saddr))
ipv6_addr_set_v4mapped(inet->inet_saddr, &np->saddr);
if (ipv6_addr_any(&sk->sk_v6_rcv_saddr) ||
ipv6_mapped_addr_any(&sk->sk_v6_rcv_saddr)) {
ipv6_addr_set_v4mapped(inet->inet_rcv_saddr,
&sk->sk_v6_rcv_saddr);
if (sk->sk_prot->rehash)
sk->sk_prot->rehash(sk);
}
goto out;
}
if (__ipv6_addr_needs_scope_id(addr_type)) {
if (addr_len >= sizeof(struct sockaddr_in6) &&
usin->sin6_scope_id) {
if (sk->sk_bound_dev_if &&
sk->sk_bound_dev_if != usin->sin6_scope_id) {
err = -EINVAL;
goto out;
}
sk->sk_bound_dev_if = usin->sin6_scope_id;
}
if (!sk->sk_bound_dev_if && (addr_type & IPV6_ADDR_MULTICAST))
sk->sk_bound_dev_if = np->mcast_oif;
/* Connect to link-local address requires an interface */
if (!sk->sk_bound_dev_if) {
err = -EINVAL;
goto out;
}
}
sk->sk_v6_daddr = *daddr;
np->flow_label = fl6.flowlabel;
inet->inet_dport = usin->sin6_port;
/*
* Check for a route to destination an obtain the
* destination cache for it.
*/
fl6.flowi6_proto = sk->sk_protocol;
fl6.daddr = sk->sk_v6_daddr;
fl6.saddr = np->saddr;
fl6.flowi6_oif = sk->sk_bound_dev_if;
fl6.flowi6_mark = sk->sk_mark;
fl6.fl6_dport = inet->inet_dport;
fl6.fl6_sport = inet->inet_sport;
if (!fl6.flowi6_oif && (addr_type&IPV6_ADDR_MULTICAST))
fl6.flowi6_oif = np->mcast_oif;
security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
opt = flowlabel ? flowlabel->opt : np->opt;
final_p = fl6_update_dst(&fl6, opt, &final);
dst = ip6_dst_lookup_flow(sk, &fl6, final_p);
err = 0;
if (IS_ERR(dst)) {
err = PTR_ERR(dst);
goto out;
}
/* source address lookup done in ip6_dst_lookup */
if (ipv6_addr_any(&np->saddr))
np->saddr = fl6.saddr;
if (ipv6_addr_any(&sk->sk_v6_rcv_saddr)) {
sk->sk_v6_rcv_saddr = fl6.saddr;
inet->inet_rcv_saddr = LOOPBACK4_IPV6;
if (sk->sk_prot->rehash)
sk->sk_prot->rehash(sk);
}
ip6_dst_store(sk, dst,
ipv6_addr_equal(&fl6.daddr, &sk->sk_v6_daddr) ?
&sk->sk_v6_daddr : NULL,
#ifdef CONFIG_IPV6_SUBTREES
ipv6_addr_equal(&fl6.saddr, &np->saddr) ?
&np->saddr :
#endif
NULL);
sk->sk_state = TCP_ESTABLISHED;
sk_set_txhash(sk);
out:
fl6_sock_release(flowlabel);
return err;
} | 814 | True | 1 |
||
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Use After Free | Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. |
The use of previously-freed memory can have any number of adverse consequences, ranging from the corruption of valid data to the execution of arbitrary code, depending on the instantiation and timing of the flaw. The simplest way data corruption may occur involves the system's reuse of the freed memory. Use-after-free errors have two common and sometimes overlapping causes:
Error conditions and other exceptional circumstances.
Confusion over which part of the program is responsible for freeing the memory.
In this scenario, the memory in question is allocated to another pointer validly at some point after it has been freed. The original pointer to the freed memory is used again and points to somewhere within the new allocation. As the data is changed, it corrupts the validly used memory; this induces undefined behavior in the process.
If the newly allocated data chances to hold a class, in C++ for example, various function pointers may be scattered within the heap data. If one of these function pointers is overwritten with an address to valid shellcode, execution of arbitrary code can be achieved.
| https://cwe.mitre.org/data/definitions/416.html | 0 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | __ip6_datagram_connect | __ip6_datagram_connect( struct sock * sk , struct sockaddr * uaddr , int addr_len) | ['sk', 'uaddr', 'addr_len'] | static int __ip6_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
{
struct sockaddr_in6 *usin = (struct sockaddr_in6 *) uaddr;
struct inet_sock *inet = inet_sk(sk);
struct ipv6_pinfo *np = inet6_sk(sk);
struct in6_addr *daddr, *final_p, final;
struct dst_entry *dst;
struct flowi6 fl6;
struct ip6_flowlabel *flowlabel = NULL;
struct ipv6_txoptions *opt;
int addr_type;
int err;
if (usin->sin6_family == AF_INET) {
if (__ipv6_only_sock(sk))
return -EAFNOSUPPORT;
err = __ip4_datagram_connect(sk, uaddr, addr_len);
goto ipv4_connected;
}
if (addr_len < SIN6_LEN_RFC2133)
return -EINVAL;
if (usin->sin6_family != AF_INET6)
return -EAFNOSUPPORT;
memset(&fl6, 0, sizeof(fl6));
if (np->sndflow) {
fl6.flowlabel = usin->sin6_flowinfo&IPV6_FLOWINFO_MASK;
if (fl6.flowlabel&IPV6_FLOWLABEL_MASK) {
flowlabel = fl6_sock_lookup(sk, fl6.flowlabel);
if (!flowlabel)
return -EINVAL;
}
}
addr_type = ipv6_addr_type(&usin->sin6_addr);
if (addr_type == IPV6_ADDR_ANY) {
/*
* connect to self
*/
usin->sin6_addr.s6_addr[15] = 0x01;
}
daddr = &usin->sin6_addr;
if (addr_type == IPV6_ADDR_MAPPED) {
struct sockaddr_in sin;
if (__ipv6_only_sock(sk)) {
err = -ENETUNREACH;
goto out;
}
sin.sin_family = AF_INET;
sin.sin_addr.s_addr = daddr->s6_addr32[3];
sin.sin_port = usin->sin6_port;
err = __ip4_datagram_connect(sk,
(struct sockaddr *) &sin,
sizeof(sin));
ipv4_connected:
if (err)
goto out;
ipv6_addr_set_v4mapped(inet->inet_daddr, &sk->sk_v6_daddr);
if (ipv6_addr_any(&np->saddr) ||
ipv6_mapped_addr_any(&np->saddr))
ipv6_addr_set_v4mapped(inet->inet_saddr, &np->saddr);
if (ipv6_addr_any(&sk->sk_v6_rcv_saddr) ||
ipv6_mapped_addr_any(&sk->sk_v6_rcv_saddr)) {
ipv6_addr_set_v4mapped(inet->inet_rcv_saddr,
&sk->sk_v6_rcv_saddr);
if (sk->sk_prot->rehash)
sk->sk_prot->rehash(sk);
}
goto out;
}
if (__ipv6_addr_needs_scope_id(addr_type)) {
if (addr_len >= sizeof(struct sockaddr_in6) &&
usin->sin6_scope_id) {
if (sk->sk_bound_dev_if &&
sk->sk_bound_dev_if != usin->sin6_scope_id) {
err = -EINVAL;
goto out;
}
sk->sk_bound_dev_if = usin->sin6_scope_id;
}
if (!sk->sk_bound_dev_if && (addr_type & IPV6_ADDR_MULTICAST))
sk->sk_bound_dev_if = np->mcast_oif;
/* Connect to link-local address requires an interface */
if (!sk->sk_bound_dev_if) {
err = -EINVAL;
goto out;
}
}
sk->sk_v6_daddr = *daddr;
np->flow_label = fl6.flowlabel;
inet->inet_dport = usin->sin6_port;
/*
* Check for a route to destination an obtain the
* destination cache for it.
*/
fl6.flowi6_proto = sk->sk_protocol;
fl6.daddr = sk->sk_v6_daddr;
fl6.saddr = np->saddr;
fl6.flowi6_oif = sk->sk_bound_dev_if;
fl6.flowi6_mark = sk->sk_mark;
fl6.fl6_dport = inet->inet_dport;
fl6.fl6_sport = inet->inet_sport;
if (!fl6.flowi6_oif && (addr_type&IPV6_ADDR_MULTICAST))
fl6.flowi6_oif = np->mcast_oif;
security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
opt = flowlabel ? flowlabel->opt : np->opt;
final_p = fl6_update_dst(&fl6, opt, &final);
dst = ip6_dst_lookup_flow(sk, &fl6, final_p);
err = 0;
if (IS_ERR(dst)) {
err = PTR_ERR(dst);
goto out;
}
/* source address lookup done in ip6_dst_lookup */
if (ipv6_addr_any(&np->saddr))
np->saddr = fl6.saddr;
if (ipv6_addr_any(&sk->sk_v6_rcv_saddr)) {
sk->sk_v6_rcv_saddr = fl6.saddr;
inet->inet_rcv_saddr = LOOPBACK4_IPV6;
if (sk->sk_prot->rehash)
sk->sk_prot->rehash(sk);
}
ip6_dst_store(sk, dst,
ipv6_addr_equal(&fl6.daddr, &sk->sk_v6_daddr) ?
&sk->sk_v6_daddr : NULL,
#ifdef CONFIG_IPV6_SUBTREES
ipv6_addr_equal(&fl6.saddr, &np->saddr) ?
&np->saddr :
#endif
NULL);
sk->sk_state = TCP_ESTABLISHED;
sk_set_txhash(sk);
out:
fl6_sock_release(flowlabel);
return err;
} | 814 | True | 1 |
|
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | ipv6_renew_options | ipv6_renew_options( struct sock * sk , struct ipv6_txoptions * opt , int newtype , struct ipv6_opt_hdr __user * newopt , int newoptlen) | ['sk', 'opt', 'newtype', 'newopt', 'newoptlen'] | ipv6_renew_options(struct sock *sk, struct ipv6_txoptions *opt,
int newtype,
struct ipv6_opt_hdr __user *newopt, int newoptlen)
{
int tot_len = 0;
char *p;
struct ipv6_txoptions *opt2;
int err;
if (opt) {
if (newtype != IPV6_HOPOPTS && opt->hopopt)
tot_len += CMSG_ALIGN(ipv6_optlen(opt->hopopt));
if (newtype != IPV6_RTHDRDSTOPTS && opt->dst0opt)
tot_len += CMSG_ALIGN(ipv6_optlen(opt->dst0opt));
if (newtype != IPV6_RTHDR && opt->srcrt)
tot_len += CMSG_ALIGN(ipv6_optlen(opt->srcrt));
if (newtype != IPV6_DSTOPTS && opt->dst1opt)
tot_len += CMSG_ALIGN(ipv6_optlen(opt->dst1opt));
}
if (newopt && newoptlen)
tot_len += CMSG_ALIGN(newoptlen);
if (!tot_len)
return NULL;
tot_len += sizeof(*opt2);
opt2 = sock_kmalloc(sk, tot_len, GFP_ATOMIC);
if (!opt2)
return ERR_PTR(-ENOBUFS);
memset(opt2, 0, tot_len);
opt2->tot_len = tot_len;
p = (char *)(opt2 + 1);
err = ipv6_renew_option(opt ? opt->hopopt : NULL, newopt, newoptlen,
newtype != IPV6_HOPOPTS,
&opt2->hopopt, &p);
if (err)
goto out;
err = ipv6_renew_option(opt ? opt->dst0opt : NULL, newopt, newoptlen,
newtype != IPV6_RTHDRDSTOPTS,
&opt2->dst0opt, &p);
if (err)
goto out;
err = ipv6_renew_option(opt ? opt->srcrt : NULL, newopt, newoptlen,
newtype != IPV6_RTHDR,
(struct ipv6_opt_hdr **)&opt2->srcrt, &p);
if (err)
goto out;
err = ipv6_renew_option(opt ? opt->dst1opt : NULL, newopt, newoptlen,
newtype != IPV6_DSTOPTS,
&opt2->dst1opt, &p);
if (err)
goto out;
opt2->opt_nflen = (opt2->hopopt ? ipv6_optlen(opt2->hopopt) : 0) +
(opt2->dst0opt ? ipv6_optlen(opt2->dst0opt) : 0) +
(opt2->srcrt ? ipv6_optlen(opt2->srcrt) : 0);
opt2->opt_flen = (opt2->dst1opt ? ipv6_optlen(opt2->dst1opt) : 0);
return opt2;
out:
sock_kfree_s(sk, opt2, opt2->tot_len);
return ERR_PTR(err);
} | 455 | True | 1 |
||
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Use After Free | Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. |
The use of previously-freed memory can have any number of adverse consequences, ranging from the corruption of valid data to the execution of arbitrary code, depending on the instantiation and timing of the flaw. The simplest way data corruption may occur involves the system's reuse of the freed memory. Use-after-free errors have two common and sometimes overlapping causes:
Error conditions and other exceptional circumstances.
Confusion over which part of the program is responsible for freeing the memory.
In this scenario, the memory in question is allocated to another pointer validly at some point after it has been freed. The original pointer to the freed memory is used again and points to somewhere within the new allocation. As the data is changed, it corrupts the validly used memory; this induces undefined behavior in the process.
If the newly allocated data chances to hold a class, in C++ for example, various function pointers may be scattered within the heap data. If one of these function pointers is overwritten with an address to valid shellcode, execution of arbitrary code can be achieved.
| https://cwe.mitre.org/data/definitions/416.html | 0 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | ipv6_renew_options | ipv6_renew_options( struct sock * sk , struct ipv6_txoptions * opt , int newtype , struct ipv6_opt_hdr __user * newopt , int newoptlen) | ['sk', 'opt', 'newtype', 'newopt', 'newoptlen'] | ipv6_renew_options(struct sock *sk, struct ipv6_txoptions *opt,
int newtype,
struct ipv6_opt_hdr __user *newopt, int newoptlen)
{
int tot_len = 0;
char *p;
struct ipv6_txoptions *opt2;
int err;
if (opt) {
if (newtype != IPV6_HOPOPTS && opt->hopopt)
tot_len += CMSG_ALIGN(ipv6_optlen(opt->hopopt));
if (newtype != IPV6_RTHDRDSTOPTS && opt->dst0opt)
tot_len += CMSG_ALIGN(ipv6_optlen(opt->dst0opt));
if (newtype != IPV6_RTHDR && opt->srcrt)
tot_len += CMSG_ALIGN(ipv6_optlen(opt->srcrt));
if (newtype != IPV6_DSTOPTS && opt->dst1opt)
tot_len += CMSG_ALIGN(ipv6_optlen(opt->dst1opt));
}
if (newopt && newoptlen)
tot_len += CMSG_ALIGN(newoptlen);
if (!tot_len)
return NULL;
tot_len += sizeof(*opt2);
opt2 = sock_kmalloc(sk, tot_len, GFP_ATOMIC);
if (!opt2)
return ERR_PTR(-ENOBUFS);
memset(opt2, 0, tot_len);
opt2->tot_len = tot_len;
p = (char *)(opt2 + 1);
err = ipv6_renew_option(opt ? opt->hopopt : NULL, newopt, newoptlen,
newtype != IPV6_HOPOPTS,
&opt2->hopopt, &p);
if (err)
goto out;
err = ipv6_renew_option(opt ? opt->dst0opt : NULL, newopt, newoptlen,
newtype != IPV6_RTHDRDSTOPTS,
&opt2->dst0opt, &p);
if (err)
goto out;
err = ipv6_renew_option(opt ? opt->srcrt : NULL, newopt, newoptlen,
newtype != IPV6_RTHDR,
(struct ipv6_opt_hdr **)&opt2->srcrt, &p);
if (err)
goto out;
err = ipv6_renew_option(opt ? opt->dst1opt : NULL, newopt, newoptlen,
newtype != IPV6_DSTOPTS,
&opt2->dst1opt, &p);
if (err)
goto out;
opt2->opt_nflen = (opt2->hopopt ? ipv6_optlen(opt2->hopopt) : 0) +
(opt2->dst0opt ? ipv6_optlen(opt2->dst0opt) : 0) +
(opt2->srcrt ? ipv6_optlen(opt2->srcrt) : 0);
opt2->opt_flen = (opt2->dst1opt ? ipv6_optlen(opt2->dst1opt) : 0);
return opt2;
out:
sock_kfree_s(sk, opt2, opt2->tot_len);
return ERR_PTR(err);
} | 455 | True | 1 |
|
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | inet6_csk_route_req | inet6_csk_route_req( const struct sock * sk , struct flowi6 * fl6 , const struct request_sock * req , u8 proto) | ['sk', 'fl6', 'req', 'proto'] | struct dst_entry *inet6_csk_route_req(const struct sock *sk,
struct flowi6 *fl6,
const struct request_sock *req,
u8 proto)
{
struct inet_request_sock *ireq = inet_rsk(req);
const struct ipv6_pinfo *np = inet6_sk(sk);
struct in6_addr *final_p, final;
struct dst_entry *dst;
memset(fl6, 0, sizeof(*fl6));
fl6->flowi6_proto = proto;
fl6->daddr = ireq->ir_v6_rmt_addr;
final_p = fl6_update_dst(fl6, np->opt, &final);
fl6->saddr = ireq->ir_v6_loc_addr;
fl6->flowi6_oif = ireq->ir_iif;
fl6->flowi6_mark = ireq->ir_mark;
fl6->fl6_dport = ireq->ir_rmt_port;
fl6->fl6_sport = htons(ireq->ir_num);
security_req_classify_flow(req, flowi6_to_flowi(fl6));
dst = ip6_dst_lookup_flow(sk, fl6, final_p);
if (IS_ERR(dst))
return NULL;
return dst;
} | 175 | True | 1 |
||
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Use After Free | Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. |
The use of previously-freed memory can have any number of adverse consequences, ranging from the corruption of valid data to the execution of arbitrary code, depending on the instantiation and timing of the flaw. The simplest way data corruption may occur involves the system's reuse of the freed memory. Use-after-free errors have two common and sometimes overlapping causes:
Error conditions and other exceptional circumstances.
Confusion over which part of the program is responsible for freeing the memory.
In this scenario, the memory in question is allocated to another pointer validly at some point after it has been freed. The original pointer to the freed memory is used again and points to somewhere within the new allocation. As the data is changed, it corrupts the validly used memory; this induces undefined behavior in the process.
If the newly allocated data chances to hold a class, in C++ for example, various function pointers may be scattered within the heap data. If one of these function pointers is overwritten with an address to valid shellcode, execution of arbitrary code can be achieved.
| https://cwe.mitre.org/data/definitions/416.html | 0 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | inet6_csk_route_req | inet6_csk_route_req( const struct sock * sk , struct flowi6 * fl6 , const struct request_sock * req , u8 proto) | ['sk', 'fl6', 'req', 'proto'] | struct dst_entry *inet6_csk_route_req(const struct sock *sk,
struct flowi6 *fl6,
const struct request_sock *req,
u8 proto)
{
struct inet_request_sock *ireq = inet_rsk(req);
const struct ipv6_pinfo *np = inet6_sk(sk);
struct in6_addr *final_p, final;
struct dst_entry *dst;
memset(fl6, 0, sizeof(*fl6));
fl6->flowi6_proto = proto;
fl6->daddr = ireq->ir_v6_rmt_addr;
final_p = fl6_update_dst(fl6, np->opt, &final);
fl6->saddr = ireq->ir_v6_loc_addr;
fl6->flowi6_oif = ireq->ir_iif;
fl6->flowi6_mark = ireq->ir_mark;
fl6->fl6_dport = ireq->ir_rmt_port;
fl6->fl6_sport = htons(ireq->ir_num);
security_req_classify_flow(req, flowi6_to_flowi(fl6));
dst = ip6_dst_lookup_flow(sk, fl6, final_p);
if (IS_ERR(dst))
return NULL;
return dst;
} | 175 | True | 1 |
|
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | inet6_csk_route_socket | inet6_csk_route_socket( struct sock * sk , struct flowi6 * fl6) | ['sk', 'fl6'] | static struct dst_entry *inet6_csk_route_socket(struct sock *sk,
struct flowi6 *fl6)
{
struct inet_sock *inet = inet_sk(sk);
struct ipv6_pinfo *np = inet6_sk(sk);
struct in6_addr *final_p, final;
struct dst_entry *dst;
memset(fl6, 0, sizeof(*fl6));
fl6->flowi6_proto = sk->sk_protocol;
fl6->daddr = sk->sk_v6_daddr;
fl6->saddr = np->saddr;
fl6->flowlabel = np->flow_label;
IP6_ECN_flow_xmit(sk, fl6->flowlabel);
fl6->flowi6_oif = sk->sk_bound_dev_if;
fl6->flowi6_mark = sk->sk_mark;
fl6->fl6_sport = inet->inet_sport;
fl6->fl6_dport = inet->inet_dport;
security_sk_classify_flow(sk, flowi6_to_flowi(fl6));
final_p = fl6_update_dst(fl6, np->opt, &final);
dst = __inet6_csk_dst_check(sk, np->dst_cookie);
if (!dst) {
dst = ip6_dst_lookup_flow(sk, fl6, final_p);
if (!IS_ERR(dst))
__inet6_csk_dst_store(sk, dst, NULL, NULL);
}
return dst;
} | 207 | True | 1 |
||
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Use After Free | Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. |
The use of previously-freed memory can have any number of adverse consequences, ranging from the corruption of valid data to the execution of arbitrary code, depending on the instantiation and timing of the flaw. The simplest way data corruption may occur involves the system's reuse of the freed memory. Use-after-free errors have two common and sometimes overlapping causes:
Error conditions and other exceptional circumstances.
Confusion over which part of the program is responsible for freeing the memory.
In this scenario, the memory in question is allocated to another pointer validly at some point after it has been freed. The original pointer to the freed memory is used again and points to somewhere within the new allocation. As the data is changed, it corrupts the validly used memory; this induces undefined behavior in the process.
If the newly allocated data chances to hold a class, in C++ for example, various function pointers may be scattered within the heap data. If one of these function pointers is overwritten with an address to valid shellcode, execution of arbitrary code can be achieved.
| https://cwe.mitre.org/data/definitions/416.html | 0 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | inet6_csk_route_socket | inet6_csk_route_socket( struct sock * sk , struct flowi6 * fl6) | ['sk', 'fl6'] | static struct dst_entry *inet6_csk_route_socket(struct sock *sk,
struct flowi6 *fl6)
{
struct inet_sock *inet = inet_sk(sk);
struct ipv6_pinfo *np = inet6_sk(sk);
struct in6_addr *final_p, final;
struct dst_entry *dst;
memset(fl6, 0, sizeof(*fl6));
fl6->flowi6_proto = sk->sk_protocol;
fl6->daddr = sk->sk_v6_daddr;
fl6->saddr = np->saddr;
fl6->flowlabel = np->flow_label;
IP6_ECN_flow_xmit(sk, fl6->flowlabel);
fl6->flowi6_oif = sk->sk_bound_dev_if;
fl6->flowi6_mark = sk->sk_mark;
fl6->fl6_sport = inet->inet_sport;
fl6->fl6_dport = inet->inet_dport;
security_sk_classify_flow(sk, flowi6_to_flowi(fl6));
final_p = fl6_update_dst(fl6, np->opt, &final);
dst = __inet6_csk_dst_check(sk, np->dst_cookie);
if (!dst) {
dst = ip6_dst_lookup_flow(sk, fl6, final_p);
if (!IS_ERR(dst))
__inet6_csk_dst_store(sk, dst, NULL, NULL);
}
return dst;
} | 207 | True | 1 |
|
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | inet6_csk_xmit | inet6_csk_xmit( struct sock * sk , struct sk_buff * skb , struct flowi * fl_unused) | ['sk', 'skb', 'fl_unused'] | int inet6_csk_xmit(struct sock *sk, struct sk_buff *skb, struct flowi *fl_unused)
{
struct ipv6_pinfo *np = inet6_sk(sk);
struct flowi6 fl6;
struct dst_entry *dst;
int res;
dst = inet6_csk_route_socket(sk, &fl6);
if (IS_ERR(dst)) {
sk->sk_err_soft = -PTR_ERR(dst);
sk->sk_route_caps = 0;
kfree_skb(skb);
return PTR_ERR(dst);
}
rcu_read_lock();
skb_dst_set_noref(skb, dst);
/* Restore final destination back after routing done */
fl6.daddr = sk->sk_v6_daddr;
res = ip6_xmit(sk, skb, &fl6, np->opt, np->tclass);
rcu_read_unlock();
return res;
} | 133 | True | 1 |
||
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Use After Free | Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. |
The use of previously-freed memory can have any number of adverse consequences, ranging from the corruption of valid data to the execution of arbitrary code, depending on the instantiation and timing of the flaw. The simplest way data corruption may occur involves the system's reuse of the freed memory. Use-after-free errors have two common and sometimes overlapping causes:
Error conditions and other exceptional circumstances.
Confusion over which part of the program is responsible for freeing the memory.
In this scenario, the memory in question is allocated to another pointer validly at some point after it has been freed. The original pointer to the freed memory is used again and points to somewhere within the new allocation. As the data is changed, it corrupts the validly used memory; this induces undefined behavior in the process.
If the newly allocated data chances to hold a class, in C++ for example, various function pointers may be scattered within the heap data. If one of these function pointers is overwritten with an address to valid shellcode, execution of arbitrary code can be achieved.
| https://cwe.mitre.org/data/definitions/416.html | 0 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | inet6_csk_xmit | inet6_csk_xmit( struct sock * sk , struct sk_buff * skb , struct flowi * fl_unused) | ['sk', 'skb', 'fl_unused'] | int inet6_csk_xmit(struct sock *sk, struct sk_buff *skb, struct flowi *fl_unused)
{
struct ipv6_pinfo *np = inet6_sk(sk);
struct flowi6 fl6;
struct dst_entry *dst;
int res;
dst = inet6_csk_route_socket(sk, &fl6);
if (IS_ERR(dst)) {
sk->sk_err_soft = -PTR_ERR(dst);
sk->sk_route_caps = 0;
kfree_skb(skb);
return PTR_ERR(dst);
}
rcu_read_lock();
skb_dst_set_noref(skb, dst);
/* Restore final destination back after routing done */
fl6.daddr = sk->sk_v6_daddr;
res = ip6_xmit(sk, skb, &fl6, np->opt, np->tclass);
rcu_read_unlock();
return res;
} | 133 | True | 1 |
|
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | do_ipv6_getsockopt | do_ipv6_getsockopt( struct sock * sk , int level , int optname , char __user * optval , int __user * optlen , unsigned int flags) | ['sk', 'level', 'optname', 'optval', 'optlen', 'flags'] | static int do_ipv6_getsockopt(struct sock *sk, int level, int optname,
char __user *optval, int __user *optlen, unsigned int flags)
{
struct ipv6_pinfo *np = inet6_sk(sk);
int len;
int val;
if (ip6_mroute_opt(optname))
return ip6_mroute_getsockopt(sk, optname, optval, optlen);
if (get_user(len, optlen))
return -EFAULT;
switch (optname) {
case IPV6_ADDRFORM:
if (sk->sk_protocol != IPPROTO_UDP &&
sk->sk_protocol != IPPROTO_UDPLITE &&
sk->sk_protocol != IPPROTO_TCP)
return -ENOPROTOOPT;
if (sk->sk_state != TCP_ESTABLISHED)
return -ENOTCONN;
val = sk->sk_family;
break;
case MCAST_MSFILTER:
{
struct group_filter gsf;
int err;
if (len < GROUP_FILTER_SIZE(0))
return -EINVAL;
if (copy_from_user(&gsf, optval, GROUP_FILTER_SIZE(0)))
return -EFAULT;
if (gsf.gf_group.ss_family != AF_INET6)
return -EADDRNOTAVAIL;
lock_sock(sk);
err = ip6_mc_msfget(sk, &gsf,
(struct group_filter __user *)optval, optlen);
release_sock(sk);
return err;
}
case IPV6_2292PKTOPTIONS:
{
struct msghdr msg;
struct sk_buff *skb;
if (sk->sk_type != SOCK_STREAM)
return -ENOPROTOOPT;
msg.msg_control = optval;
msg.msg_controllen = len;
msg.msg_flags = flags;
lock_sock(sk);
skb = np->pktoptions;
if (skb)
ip6_datagram_recv_ctl(sk, &msg, skb);
release_sock(sk);
if (!skb) {
if (np->rxopt.bits.rxinfo) {
struct in6_pktinfo src_info;
src_info.ipi6_ifindex = np->mcast_oif ? np->mcast_oif :
np->sticky_pktinfo.ipi6_ifindex;
src_info.ipi6_addr = np->mcast_oif ? sk->sk_v6_daddr : np->sticky_pktinfo.ipi6_addr;
put_cmsg(&msg, SOL_IPV6, IPV6_PKTINFO, sizeof(src_info), &src_info);
}
if (np->rxopt.bits.rxhlim) {
int hlim = np->mcast_hops;
put_cmsg(&msg, SOL_IPV6, IPV6_HOPLIMIT, sizeof(hlim), &hlim);
}
if (np->rxopt.bits.rxtclass) {
int tclass = (int)ip6_tclass(np->rcv_flowinfo);
put_cmsg(&msg, SOL_IPV6, IPV6_TCLASS, sizeof(tclass), &tclass);
}
if (np->rxopt.bits.rxoinfo) {
struct in6_pktinfo src_info;
src_info.ipi6_ifindex = np->mcast_oif ? np->mcast_oif :
np->sticky_pktinfo.ipi6_ifindex;
src_info.ipi6_addr = np->mcast_oif ? sk->sk_v6_daddr :
np->sticky_pktinfo.ipi6_addr;
put_cmsg(&msg, SOL_IPV6, IPV6_2292PKTINFO, sizeof(src_info), &src_info);
}
if (np->rxopt.bits.rxohlim) {
int hlim = np->mcast_hops;
put_cmsg(&msg, SOL_IPV6, IPV6_2292HOPLIMIT, sizeof(hlim), &hlim);
}
if (np->rxopt.bits.rxflow) {
__be32 flowinfo = np->rcv_flowinfo;
put_cmsg(&msg, SOL_IPV6, IPV6_FLOWINFO, sizeof(flowinfo), &flowinfo);
}
}
len -= msg.msg_controllen;
return put_user(len, optlen);
}
case IPV6_MTU:
{
struct dst_entry *dst;
val = 0;
rcu_read_lock();
dst = __sk_dst_get(sk);
if (dst)
val = dst_mtu(dst);
rcu_read_unlock();
if (!val)
return -ENOTCONN;
break;
}
case IPV6_V6ONLY:
val = sk->sk_ipv6only;
break;
case IPV6_RECVPKTINFO:
val = np->rxopt.bits.rxinfo;
break;
case IPV6_2292PKTINFO:
val = np->rxopt.bits.rxoinfo;
break;
case IPV6_RECVHOPLIMIT:
val = np->rxopt.bits.rxhlim;
break;
case IPV6_2292HOPLIMIT:
val = np->rxopt.bits.rxohlim;
break;
case IPV6_RECVRTHDR:
val = np->rxopt.bits.srcrt;
break;
case IPV6_2292RTHDR:
val = np->rxopt.bits.osrcrt;
break;
case IPV6_HOPOPTS:
case IPV6_RTHDRDSTOPTS:
case IPV6_RTHDR:
case IPV6_DSTOPTS:
{
lock_sock(sk);
len = ipv6_getsockopt_sticky(sk, np->opt,
optname, optval, len);
release_sock(sk);
/* check if ipv6_getsockopt_sticky() returns err code */
if (len < 0)
return len;
return put_user(len, optlen);
}
case IPV6_RECVHOPOPTS:
val = np->rxopt.bits.hopopts;
break;
case IPV6_2292HOPOPTS:
val = np->rxopt.bits.ohopopts;
break;
case IPV6_RECVDSTOPTS:
val = np->rxopt.bits.dstopts;
break;
case IPV6_2292DSTOPTS:
val = np->rxopt.bits.odstopts;
break;
case IPV6_TCLASS:
val = np->tclass;
break;
case IPV6_RECVTCLASS:
val = np->rxopt.bits.rxtclass;
break;
case IPV6_FLOWINFO:
val = np->rxopt.bits.rxflow;
break;
case IPV6_RECVPATHMTU:
val = np->rxopt.bits.rxpmtu;
break;
case IPV6_PATHMTU:
{
struct dst_entry *dst;
struct ip6_mtuinfo mtuinfo;
if (len < sizeof(mtuinfo))
return -EINVAL;
len = sizeof(mtuinfo);
memset(&mtuinfo, 0, sizeof(mtuinfo));
rcu_read_lock();
dst = __sk_dst_get(sk);
if (dst)
mtuinfo.ip6m_mtu = dst_mtu(dst);
rcu_read_unlock();
if (!mtuinfo.ip6m_mtu)
return -ENOTCONN;
if (put_user(len, optlen))
return -EFAULT;
if (copy_to_user(optval, &mtuinfo, len))
return -EFAULT;
return 0;
}
case IPV6_TRANSPARENT:
val = inet_sk(sk)->transparent;
break;
case IPV6_RECVORIGDSTADDR:
val = np->rxopt.bits.rxorigdstaddr;
break;
case IPV6_UNICAST_HOPS:
case IPV6_MULTICAST_HOPS:
{
struct dst_entry *dst;
if (optname == IPV6_UNICAST_HOPS)
val = np->hop_limit;
else
val = np->mcast_hops;
if (val < 0) {
rcu_read_lock();
dst = __sk_dst_get(sk);
if (dst)
val = ip6_dst_hoplimit(dst);
rcu_read_unlock();
}
if (val < 0)
val = sock_net(sk)->ipv6.devconf_all->hop_limit;
break;
}
case IPV6_MULTICAST_LOOP:
val = np->mc_loop;
break;
case IPV6_MULTICAST_IF:
val = np->mcast_oif;
break;
case IPV6_UNICAST_IF:
val = (__force int)htonl((__u32) np->ucast_oif);
break;
case IPV6_MTU_DISCOVER:
val = np->pmtudisc;
break;
case IPV6_RECVERR:
val = np->recverr;
break;
case IPV6_FLOWINFO_SEND:
val = np->sndflow;
break;
case IPV6_FLOWLABEL_MGR:
{
struct in6_flowlabel_req freq;
int flags;
if (len < sizeof(freq))
return -EINVAL;
if (copy_from_user(&freq, optval, sizeof(freq)))
return -EFAULT;
if (freq.flr_action != IPV6_FL_A_GET)
return -EINVAL;
len = sizeof(freq);
flags = freq.flr_flags;
memset(&freq, 0, sizeof(freq));
val = ipv6_flowlabel_opt_get(sk, &freq, flags);
if (val < 0)
return val;
if (put_user(len, optlen))
return -EFAULT;
if (copy_to_user(optval, &freq, len))
return -EFAULT;
return 0;
}
case IPV6_ADDR_PREFERENCES:
val = 0;
if (np->srcprefs & IPV6_PREFER_SRC_TMP)
val |= IPV6_PREFER_SRC_TMP;
else if (np->srcprefs & IPV6_PREFER_SRC_PUBLIC)
val |= IPV6_PREFER_SRC_PUBLIC;
else {
/* XXX: should we return system default? */
val |= IPV6_PREFER_SRC_PUBTMP_DEFAULT;
}
if (np->srcprefs & IPV6_PREFER_SRC_COA)
val |= IPV6_PREFER_SRC_COA;
else
val |= IPV6_PREFER_SRC_HOME;
break;
case IPV6_MINHOPCOUNT:
val = np->min_hopcount;
break;
case IPV6_DONTFRAG:
val = np->dontfrag;
break;
case IPV6_AUTOFLOWLABEL:
val = np->autoflowlabel;
break;
default:
return -ENOPROTOOPT;
}
len = min_t(unsigned int, sizeof(int), len);
if (put_user(len, optlen))
return -EFAULT;
if (copy_to_user(optval, &val, len))
return -EFAULT;
return 0;
} | 1525 | True | 1 |
||
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Use After Free | Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. |
The use of previously-freed memory can have any number of adverse consequences, ranging from the corruption of valid data to the execution of arbitrary code, depending on the instantiation and timing of the flaw. The simplest way data corruption may occur involves the system's reuse of the freed memory. Use-after-free errors have two common and sometimes overlapping causes:
Error conditions and other exceptional circumstances.
Confusion over which part of the program is responsible for freeing the memory.
In this scenario, the memory in question is allocated to another pointer validly at some point after it has been freed. The original pointer to the freed memory is used again and points to somewhere within the new allocation. As the data is changed, it corrupts the validly used memory; this induces undefined behavior in the process.
If the newly allocated data chances to hold a class, in C++ for example, various function pointers may be scattered within the heap data. If one of these function pointers is overwritten with an address to valid shellcode, execution of arbitrary code can be achieved.
| https://cwe.mitre.org/data/definitions/416.html | 0 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | do_ipv6_getsockopt | do_ipv6_getsockopt( struct sock * sk , int level , int optname , char __user * optval , int __user * optlen , unsigned int flags) | ['sk', 'level', 'optname', 'optval', 'optlen', 'flags'] | static int do_ipv6_getsockopt(struct sock *sk, int level, int optname,
char __user *optval, int __user *optlen, unsigned int flags)
{
struct ipv6_pinfo *np = inet6_sk(sk);
int len;
int val;
if (ip6_mroute_opt(optname))
return ip6_mroute_getsockopt(sk, optname, optval, optlen);
if (get_user(len, optlen))
return -EFAULT;
switch (optname) {
case IPV6_ADDRFORM:
if (sk->sk_protocol != IPPROTO_UDP &&
sk->sk_protocol != IPPROTO_UDPLITE &&
sk->sk_protocol != IPPROTO_TCP)
return -ENOPROTOOPT;
if (sk->sk_state != TCP_ESTABLISHED)
return -ENOTCONN;
val = sk->sk_family;
break;
case MCAST_MSFILTER:
{
struct group_filter gsf;
int err;
if (len < GROUP_FILTER_SIZE(0))
return -EINVAL;
if (copy_from_user(&gsf, optval, GROUP_FILTER_SIZE(0)))
return -EFAULT;
if (gsf.gf_group.ss_family != AF_INET6)
return -EADDRNOTAVAIL;
lock_sock(sk);
err = ip6_mc_msfget(sk, &gsf,
(struct group_filter __user *)optval, optlen);
release_sock(sk);
return err;
}
case IPV6_2292PKTOPTIONS:
{
struct msghdr msg;
struct sk_buff *skb;
if (sk->sk_type != SOCK_STREAM)
return -ENOPROTOOPT;
msg.msg_control = optval;
msg.msg_controllen = len;
msg.msg_flags = flags;
lock_sock(sk);
skb = np->pktoptions;
if (skb)
ip6_datagram_recv_ctl(sk, &msg, skb);
release_sock(sk);
if (!skb) {
if (np->rxopt.bits.rxinfo) {
struct in6_pktinfo src_info;
src_info.ipi6_ifindex = np->mcast_oif ? np->mcast_oif :
np->sticky_pktinfo.ipi6_ifindex;
src_info.ipi6_addr = np->mcast_oif ? sk->sk_v6_daddr : np->sticky_pktinfo.ipi6_addr;
put_cmsg(&msg, SOL_IPV6, IPV6_PKTINFO, sizeof(src_info), &src_info);
}
if (np->rxopt.bits.rxhlim) {
int hlim = np->mcast_hops;
put_cmsg(&msg, SOL_IPV6, IPV6_HOPLIMIT, sizeof(hlim), &hlim);
}
if (np->rxopt.bits.rxtclass) {
int tclass = (int)ip6_tclass(np->rcv_flowinfo);
put_cmsg(&msg, SOL_IPV6, IPV6_TCLASS, sizeof(tclass), &tclass);
}
if (np->rxopt.bits.rxoinfo) {
struct in6_pktinfo src_info;
src_info.ipi6_ifindex = np->mcast_oif ? np->mcast_oif :
np->sticky_pktinfo.ipi6_ifindex;
src_info.ipi6_addr = np->mcast_oif ? sk->sk_v6_daddr :
np->sticky_pktinfo.ipi6_addr;
put_cmsg(&msg, SOL_IPV6, IPV6_2292PKTINFO, sizeof(src_info), &src_info);
}
if (np->rxopt.bits.rxohlim) {
int hlim = np->mcast_hops;
put_cmsg(&msg, SOL_IPV6, IPV6_2292HOPLIMIT, sizeof(hlim), &hlim);
}
if (np->rxopt.bits.rxflow) {
__be32 flowinfo = np->rcv_flowinfo;
put_cmsg(&msg, SOL_IPV6, IPV6_FLOWINFO, sizeof(flowinfo), &flowinfo);
}
}
len -= msg.msg_controllen;
return put_user(len, optlen);
}
case IPV6_MTU:
{
struct dst_entry *dst;
val = 0;
rcu_read_lock();
dst = __sk_dst_get(sk);
if (dst)
val = dst_mtu(dst);
rcu_read_unlock();
if (!val)
return -ENOTCONN;
break;
}
case IPV6_V6ONLY:
val = sk->sk_ipv6only;
break;
case IPV6_RECVPKTINFO:
val = np->rxopt.bits.rxinfo;
break;
case IPV6_2292PKTINFO:
val = np->rxopt.bits.rxoinfo;
break;
case IPV6_RECVHOPLIMIT:
val = np->rxopt.bits.rxhlim;
break;
case IPV6_2292HOPLIMIT:
val = np->rxopt.bits.rxohlim;
break;
case IPV6_RECVRTHDR:
val = np->rxopt.bits.srcrt;
break;
case IPV6_2292RTHDR:
val = np->rxopt.bits.osrcrt;
break;
case IPV6_HOPOPTS:
case IPV6_RTHDRDSTOPTS:
case IPV6_RTHDR:
case IPV6_DSTOPTS:
{
lock_sock(sk);
len = ipv6_getsockopt_sticky(sk, np->opt,
optname, optval, len);
release_sock(sk);
/* check if ipv6_getsockopt_sticky() returns err code */
if (len < 0)
return len;
return put_user(len, optlen);
}
case IPV6_RECVHOPOPTS:
val = np->rxopt.bits.hopopts;
break;
case IPV6_2292HOPOPTS:
val = np->rxopt.bits.ohopopts;
break;
case IPV6_RECVDSTOPTS:
val = np->rxopt.bits.dstopts;
break;
case IPV6_2292DSTOPTS:
val = np->rxopt.bits.odstopts;
break;
case IPV6_TCLASS:
val = np->tclass;
break;
case IPV6_RECVTCLASS:
val = np->rxopt.bits.rxtclass;
break;
case IPV6_FLOWINFO:
val = np->rxopt.bits.rxflow;
break;
case IPV6_RECVPATHMTU:
val = np->rxopt.bits.rxpmtu;
break;
case IPV6_PATHMTU:
{
struct dst_entry *dst;
struct ip6_mtuinfo mtuinfo;
if (len < sizeof(mtuinfo))
return -EINVAL;
len = sizeof(mtuinfo);
memset(&mtuinfo, 0, sizeof(mtuinfo));
rcu_read_lock();
dst = __sk_dst_get(sk);
if (dst)
mtuinfo.ip6m_mtu = dst_mtu(dst);
rcu_read_unlock();
if (!mtuinfo.ip6m_mtu)
return -ENOTCONN;
if (put_user(len, optlen))
return -EFAULT;
if (copy_to_user(optval, &mtuinfo, len))
return -EFAULT;
return 0;
}
case IPV6_TRANSPARENT:
val = inet_sk(sk)->transparent;
break;
case IPV6_RECVORIGDSTADDR:
val = np->rxopt.bits.rxorigdstaddr;
break;
case IPV6_UNICAST_HOPS:
case IPV6_MULTICAST_HOPS:
{
struct dst_entry *dst;
if (optname == IPV6_UNICAST_HOPS)
val = np->hop_limit;
else
val = np->mcast_hops;
if (val < 0) {
rcu_read_lock();
dst = __sk_dst_get(sk);
if (dst)
val = ip6_dst_hoplimit(dst);
rcu_read_unlock();
}
if (val < 0)
val = sock_net(sk)->ipv6.devconf_all->hop_limit;
break;
}
case IPV6_MULTICAST_LOOP:
val = np->mc_loop;
break;
case IPV6_MULTICAST_IF:
val = np->mcast_oif;
break;
case IPV6_UNICAST_IF:
val = (__force int)htonl((__u32) np->ucast_oif);
break;
case IPV6_MTU_DISCOVER:
val = np->pmtudisc;
break;
case IPV6_RECVERR:
val = np->recverr;
break;
case IPV6_FLOWINFO_SEND:
val = np->sndflow;
break;
case IPV6_FLOWLABEL_MGR:
{
struct in6_flowlabel_req freq;
int flags;
if (len < sizeof(freq))
return -EINVAL;
if (copy_from_user(&freq, optval, sizeof(freq)))
return -EFAULT;
if (freq.flr_action != IPV6_FL_A_GET)
return -EINVAL;
len = sizeof(freq);
flags = freq.flr_flags;
memset(&freq, 0, sizeof(freq));
val = ipv6_flowlabel_opt_get(sk, &freq, flags);
if (val < 0)
return val;
if (put_user(len, optlen))
return -EFAULT;
if (copy_to_user(optval, &freq, len))
return -EFAULT;
return 0;
}
case IPV6_ADDR_PREFERENCES:
val = 0;
if (np->srcprefs & IPV6_PREFER_SRC_TMP)
val |= IPV6_PREFER_SRC_TMP;
else if (np->srcprefs & IPV6_PREFER_SRC_PUBLIC)
val |= IPV6_PREFER_SRC_PUBLIC;
else {
/* XXX: should we return system default? */
val |= IPV6_PREFER_SRC_PUBTMP_DEFAULT;
}
if (np->srcprefs & IPV6_PREFER_SRC_COA)
val |= IPV6_PREFER_SRC_COA;
else
val |= IPV6_PREFER_SRC_HOME;
break;
case IPV6_MINHOPCOUNT:
val = np->min_hopcount;
break;
case IPV6_DONTFRAG:
val = np->dontfrag;
break;
case IPV6_AUTOFLOWLABEL:
val = np->autoflowlabel;
break;
default:
return -ENOPROTOOPT;
}
len = min_t(unsigned int, sizeof(int), len);
if (put_user(len, optlen))
return -EFAULT;
if (copy_to_user(optval, &val, len))
return -EFAULT;
return 0;
} | 1525 | True | 1 |
|
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | do_ipv6_setsockopt | do_ipv6_setsockopt( struct sock * sk , int level , int optname , char __user * optval , unsigned int optlen) | ['sk', 'level', 'optname', 'optval', 'optlen'] | static int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
char __user *optval, unsigned int optlen)
{
struct ipv6_pinfo *np = inet6_sk(sk);
struct net *net = sock_net(sk);
int val, valbool;
int retv = -ENOPROTOOPT;
bool needs_rtnl = setsockopt_needs_rtnl(optname);
if (!optval)
val = 0;
else {
if (optlen >= sizeof(int)) {
if (get_user(val, (int __user *) optval))
return -EFAULT;
} else
val = 0;
}
valbool = (val != 0);
if (ip6_mroute_opt(optname))
return ip6_mroute_setsockopt(sk, optname, optval, optlen);
if (needs_rtnl)
rtnl_lock();
lock_sock(sk);
switch (optname) {
case IPV6_ADDRFORM:
if (optlen < sizeof(int))
goto e_inval;
if (val == PF_INET) {
struct ipv6_txoptions *opt;
struct sk_buff *pktopt;
if (sk->sk_type == SOCK_RAW)
break;
if (sk->sk_protocol == IPPROTO_UDP ||
sk->sk_protocol == IPPROTO_UDPLITE) {
struct udp_sock *up = udp_sk(sk);
if (up->pending == AF_INET6) {
retv = -EBUSY;
break;
}
} else if (sk->sk_protocol != IPPROTO_TCP)
break;
if (sk->sk_state != TCP_ESTABLISHED) {
retv = -ENOTCONN;
break;
}
if (ipv6_only_sock(sk) ||
!ipv6_addr_v4mapped(&sk->sk_v6_daddr)) {
retv = -EADDRNOTAVAIL;
break;
}
fl6_free_socklist(sk);
ipv6_sock_mc_close(sk);
/*
* Sock is moving from IPv6 to IPv4 (sk_prot), so
* remove it from the refcnt debug socks count in the
* original family...
*/
sk_refcnt_debug_dec(sk);
if (sk->sk_protocol == IPPROTO_TCP) {
struct inet_connection_sock *icsk = inet_csk(sk);
local_bh_disable();
sock_prot_inuse_add(net, sk->sk_prot, -1);
sock_prot_inuse_add(net, &tcp_prot, 1);
local_bh_enable();
sk->sk_prot = &tcp_prot;
icsk->icsk_af_ops = &ipv4_specific;
sk->sk_socket->ops = &inet_stream_ops;
sk->sk_family = PF_INET;
tcp_sync_mss(sk, icsk->icsk_pmtu_cookie);
} else {
struct proto *prot = &udp_prot;
if (sk->sk_protocol == IPPROTO_UDPLITE)
prot = &udplite_prot;
local_bh_disable();
sock_prot_inuse_add(net, sk->sk_prot, -1);
sock_prot_inuse_add(net, prot, 1);
local_bh_enable();
sk->sk_prot = prot;
sk->sk_socket->ops = &inet_dgram_ops;
sk->sk_family = PF_INET;
}
opt = xchg(&np->opt, NULL);
if (opt)
sock_kfree_s(sk, opt, opt->tot_len);
pktopt = xchg(&np->pktoptions, NULL);
kfree_skb(pktopt);
sk->sk_destruct = inet_sock_destruct;
/*
* ... and add it to the refcnt debug socks count
* in the new family. -acme
*/
sk_refcnt_debug_inc(sk);
module_put(THIS_MODULE);
retv = 0;
break;
}
goto e_inval;
case IPV6_V6ONLY:
if (optlen < sizeof(int) ||
inet_sk(sk)->inet_num)
goto e_inval;
sk->sk_ipv6only = valbool;
retv = 0;
break;
case IPV6_RECVPKTINFO:
if (optlen < sizeof(int))
goto e_inval;
np->rxopt.bits.rxinfo = valbool;
retv = 0;
break;
case IPV6_2292PKTINFO:
if (optlen < sizeof(int))
goto e_inval;
np->rxopt.bits.rxoinfo = valbool;
retv = 0;
break;
case IPV6_RECVHOPLIMIT:
if (optlen < sizeof(int))
goto e_inval;
np->rxopt.bits.rxhlim = valbool;
retv = 0;
break;
case IPV6_2292HOPLIMIT:
if (optlen < sizeof(int))
goto e_inval;
np->rxopt.bits.rxohlim = valbool;
retv = 0;
break;
case IPV6_RECVRTHDR:
if (optlen < sizeof(int))
goto e_inval;
np->rxopt.bits.srcrt = valbool;
retv = 0;
break;
case IPV6_2292RTHDR:
if (optlen < sizeof(int))
goto e_inval;
np->rxopt.bits.osrcrt = valbool;
retv = 0;
break;
case IPV6_RECVHOPOPTS:
if (optlen < sizeof(int))
goto e_inval;
np->rxopt.bits.hopopts = valbool;
retv = 0;
break;
case IPV6_2292HOPOPTS:
if (optlen < sizeof(int))
goto e_inval;
np->rxopt.bits.ohopopts = valbool;
retv = 0;
break;
case IPV6_RECVDSTOPTS:
if (optlen < sizeof(int))
goto e_inval;
np->rxopt.bits.dstopts = valbool;
retv = 0;
break;
case IPV6_2292DSTOPTS:
if (optlen < sizeof(int))
goto e_inval;
np->rxopt.bits.odstopts = valbool;
retv = 0;
break;
case IPV6_TCLASS:
if (optlen < sizeof(int))
goto e_inval;
if (val < -1 || val > 0xff)
goto e_inval;
/* RFC 3542, 6.5: default traffic class of 0x0 */
if (val == -1)
val = 0;
np->tclass = val;
retv = 0;
break;
case IPV6_RECVTCLASS:
if (optlen < sizeof(int))
goto e_inval;
np->rxopt.bits.rxtclass = valbool;
retv = 0;
break;
case IPV6_FLOWINFO:
if (optlen < sizeof(int))
goto e_inval;
np->rxopt.bits.rxflow = valbool;
retv = 0;
break;
case IPV6_RECVPATHMTU:
if (optlen < sizeof(int))
goto e_inval;
np->rxopt.bits.rxpmtu = valbool;
retv = 0;
break;
case IPV6_TRANSPARENT:
if (valbool && !ns_capable(net->user_ns, CAP_NET_ADMIN) &&
!ns_capable(net->user_ns, CAP_NET_RAW)) {
retv = -EPERM;
break;
}
if (optlen < sizeof(int))
goto e_inval;
/* we don't have a separate transparent bit for IPV6 we use the one in the IPv4 socket */
inet_sk(sk)->transparent = valbool;
retv = 0;
break;
case IPV6_RECVORIGDSTADDR:
if (optlen < sizeof(int))
goto e_inval;
np->rxopt.bits.rxorigdstaddr = valbool;
retv = 0;
break;
case IPV6_HOPOPTS:
case IPV6_RTHDRDSTOPTS:
case IPV6_RTHDR:
case IPV6_DSTOPTS:
{
struct ipv6_txoptions *opt;
/* remove any sticky options header with a zero option
* length, per RFC3542.
*/
if (optlen == 0)
optval = NULL;
else if (!optval)
goto e_inval;
else if (optlen < sizeof(struct ipv6_opt_hdr) ||
optlen & 0x7 || optlen > 8 * 255)
goto e_inval;
/* hop-by-hop / destination options are privileged option */
retv = -EPERM;
if (optname != IPV6_RTHDR && !ns_capable(net->user_ns, CAP_NET_RAW))
break;
opt = ipv6_renew_options(sk, np->opt, optname,
(struct ipv6_opt_hdr __user *)optval,
optlen);
if (IS_ERR(opt)) {
retv = PTR_ERR(opt);
break;
}
/* routing header option needs extra check */
retv = -EINVAL;
if (optname == IPV6_RTHDR && opt && opt->srcrt) {
struct ipv6_rt_hdr *rthdr = opt->srcrt;
switch (rthdr->type) {
#if IS_ENABLED(CONFIG_IPV6_MIP6)
case IPV6_SRCRT_TYPE_2:
if (rthdr->hdrlen != 2 ||
rthdr->segments_left != 1)
goto sticky_done;
break;
#endif
default:
goto sticky_done;
}
}
retv = 0;
opt = ipv6_update_options(sk, opt);
sticky_done:
if (opt)
sock_kfree_s(sk, opt, opt->tot_len);
break;
}
case IPV6_PKTINFO:
{
struct in6_pktinfo pkt;
if (optlen == 0)
goto e_inval;
else if (optlen < sizeof(struct in6_pktinfo) || !optval)
goto e_inval;
if (copy_from_user(&pkt, optval, sizeof(struct in6_pktinfo))) {
retv = -EFAULT;
break;
}
if (sk->sk_bound_dev_if && pkt.ipi6_ifindex != sk->sk_bound_dev_if)
goto e_inval;
np->sticky_pktinfo.ipi6_ifindex = pkt.ipi6_ifindex;
np->sticky_pktinfo.ipi6_addr = pkt.ipi6_addr;
retv = 0;
break;
}
case IPV6_2292PKTOPTIONS:
{
struct ipv6_txoptions *opt = NULL;
struct msghdr msg;
struct flowi6 fl6;
int junk;
memset(&fl6, 0, sizeof(fl6));
fl6.flowi6_oif = sk->sk_bound_dev_if;
fl6.flowi6_mark = sk->sk_mark;
if (optlen == 0)
goto update;
/* 1K is probably excessive
* 1K is surely not enough, 2K per standard header is 16K.
*/
retv = -EINVAL;
if (optlen > 64*1024)
break;
opt = sock_kmalloc(sk, sizeof(*opt) + optlen, GFP_KERNEL);
retv = -ENOBUFS;
if (!opt)
break;
memset(opt, 0, sizeof(*opt));
opt->tot_len = sizeof(*opt) + optlen;
retv = -EFAULT;
if (copy_from_user(opt+1, optval, optlen))
goto done;
msg.msg_controllen = optlen;
msg.msg_control = (void *)(opt+1);
retv = ip6_datagram_send_ctl(net, sk, &msg, &fl6, opt, &junk,
&junk, &junk);
if (retv)
goto done;
update:
retv = 0;
opt = ipv6_update_options(sk, opt);
done:
if (opt)
sock_kfree_s(sk, opt, opt->tot_len);
break;
}
case IPV6_UNICAST_HOPS:
if (optlen < sizeof(int))
goto e_inval;
if (val > 255 || val < -1)
goto e_inval;
np->hop_limit = val;
retv = 0;
break;
case IPV6_MULTICAST_HOPS:
if (sk->sk_type == SOCK_STREAM)
break;
if (optlen < sizeof(int))
goto e_inval;
if (val > 255 || val < -1)
goto e_inval;
np->mcast_hops = (val == -1 ? IPV6_DEFAULT_MCASTHOPS : val);
retv = 0;
break;
case IPV6_MULTICAST_LOOP:
if (optlen < sizeof(int))
goto e_inval;
if (val != valbool)
goto e_inval;
np->mc_loop = valbool;
retv = 0;
break;
case IPV6_UNICAST_IF:
{
struct net_device *dev = NULL;
int ifindex;
if (optlen != sizeof(int))
goto e_inval;
ifindex = (__force int)ntohl((__force __be32)val);
if (ifindex == 0) {
np->ucast_oif = 0;
retv = 0;
break;
}
dev = dev_get_by_index(net, ifindex);
retv = -EADDRNOTAVAIL;
if (!dev)
break;
dev_put(dev);
retv = -EINVAL;
if (sk->sk_bound_dev_if)
break;
np->ucast_oif = ifindex;
retv = 0;
break;
}
case IPV6_MULTICAST_IF:
if (sk->sk_type == SOCK_STREAM)
break;
if (optlen < sizeof(int))
goto e_inval;
if (val) {
struct net_device *dev;
if (sk->sk_bound_dev_if && sk->sk_bound_dev_if != val)
goto e_inval;
dev = dev_get_by_index(net, val);
if (!dev) {
retv = -ENODEV;
break;
}
dev_put(dev);
}
np->mcast_oif = val;
retv = 0;
break;
case IPV6_ADD_MEMBERSHIP:
case IPV6_DROP_MEMBERSHIP:
{
struct ipv6_mreq mreq;
if (optlen < sizeof(struct ipv6_mreq))
goto e_inval;
retv = -EPROTO;
if (inet_sk(sk)->is_icsk)
break;
retv = -EFAULT;
if (copy_from_user(&mreq, optval, sizeof(struct ipv6_mreq)))
break;
if (optname == IPV6_ADD_MEMBERSHIP)
retv = ipv6_sock_mc_join(sk, mreq.ipv6mr_ifindex, &mreq.ipv6mr_multiaddr);
else
retv = ipv6_sock_mc_drop(sk, mreq.ipv6mr_ifindex, &mreq.ipv6mr_multiaddr);
break;
}
case IPV6_JOIN_ANYCAST:
case IPV6_LEAVE_ANYCAST:
{
struct ipv6_mreq mreq;
if (optlen < sizeof(struct ipv6_mreq))
goto e_inval;
retv = -EFAULT;
if (copy_from_user(&mreq, optval, sizeof(struct ipv6_mreq)))
break;
if (optname == IPV6_JOIN_ANYCAST)
retv = ipv6_sock_ac_join(sk, mreq.ipv6mr_ifindex, &mreq.ipv6mr_acaddr);
else
retv = ipv6_sock_ac_drop(sk, mreq.ipv6mr_ifindex, &mreq.ipv6mr_acaddr);
break;
}
case MCAST_JOIN_GROUP:
case MCAST_LEAVE_GROUP:
{
struct group_req greq;
struct sockaddr_in6 *psin6;
if (optlen < sizeof(struct group_req))
goto e_inval;
retv = -EFAULT;
if (copy_from_user(&greq, optval, sizeof(struct group_req)))
break;
if (greq.gr_group.ss_family != AF_INET6) {
retv = -EADDRNOTAVAIL;
break;
}
psin6 = (struct sockaddr_in6 *)&greq.gr_group;
if (optname == MCAST_JOIN_GROUP)
retv = ipv6_sock_mc_join(sk, greq.gr_interface,
&psin6->sin6_addr);
else
retv = ipv6_sock_mc_drop(sk, greq.gr_interface,
&psin6->sin6_addr);
break;
}
case MCAST_JOIN_SOURCE_GROUP:
case MCAST_LEAVE_SOURCE_GROUP:
case MCAST_BLOCK_SOURCE:
case MCAST_UNBLOCK_SOURCE:
{
struct group_source_req greqs;
int omode, add;
if (optlen < sizeof(struct group_source_req))
goto e_inval;
if (copy_from_user(&greqs, optval, sizeof(greqs))) {
retv = -EFAULT;
break;
}
if (greqs.gsr_group.ss_family != AF_INET6 ||
greqs.gsr_source.ss_family != AF_INET6) {
retv = -EADDRNOTAVAIL;
break;
}
if (optname == MCAST_BLOCK_SOURCE) {
omode = MCAST_EXCLUDE;
add = 1;
} else if (optname == MCAST_UNBLOCK_SOURCE) {
omode = MCAST_EXCLUDE;
add = 0;
} else if (optname == MCAST_JOIN_SOURCE_GROUP) {
struct sockaddr_in6 *psin6;
psin6 = (struct sockaddr_in6 *)&greqs.gsr_group;
retv = ipv6_sock_mc_join(sk, greqs.gsr_interface,
&psin6->sin6_addr);
/* prior join w/ different source is ok */
if (retv && retv != -EADDRINUSE)
break;
omode = MCAST_INCLUDE;
add = 1;
} else /* MCAST_LEAVE_SOURCE_GROUP */ {
omode = MCAST_INCLUDE;
add = 0;
}
retv = ip6_mc_source(add, omode, sk, &greqs);
break;
}
case MCAST_MSFILTER:
{
struct group_filter *gsf;
if (optlen < GROUP_FILTER_SIZE(0))
goto e_inval;
if (optlen > sysctl_optmem_max) {
retv = -ENOBUFS;
break;
}
gsf = kmalloc(optlen, GFP_KERNEL);
if (!gsf) {
retv = -ENOBUFS;
break;
}
retv = -EFAULT;
if (copy_from_user(gsf, optval, optlen)) {
kfree(gsf);
break;
}
/* numsrc >= (4G-140)/128 overflow in 32 bits */
if (gsf->gf_numsrc >= 0x1ffffffU ||
gsf->gf_numsrc > sysctl_mld_max_msf) {
kfree(gsf);
retv = -ENOBUFS;
break;
}
if (GROUP_FILTER_SIZE(gsf->gf_numsrc) > optlen) {
kfree(gsf);
retv = -EINVAL;
break;
}
retv = ip6_mc_msfilter(sk, gsf);
kfree(gsf);
break;
}
case IPV6_ROUTER_ALERT:
if (optlen < sizeof(int))
goto e_inval;
retv = ip6_ra_control(sk, val);
break;
case IPV6_MTU_DISCOVER:
if (optlen < sizeof(int))
goto e_inval;
if (val < IPV6_PMTUDISC_DONT || val > IPV6_PMTUDISC_OMIT)
goto e_inval;
np->pmtudisc = val;
retv = 0;
break;
case IPV6_MTU:
if (optlen < sizeof(int))
goto e_inval;
if (val && val < IPV6_MIN_MTU)
goto e_inval;
np->frag_size = val;
retv = 0;
break;
case IPV6_RECVERR:
if (optlen < sizeof(int))
goto e_inval;
np->recverr = valbool;
if (!val)
skb_queue_purge(&sk->sk_error_queue);
retv = 0;
break;
case IPV6_FLOWINFO_SEND:
if (optlen < sizeof(int))
goto e_inval;
np->sndflow = valbool;
retv = 0;
break;
case IPV6_FLOWLABEL_MGR:
retv = ipv6_flowlabel_opt(sk, optval, optlen);
break;
case IPV6_IPSEC_POLICY:
case IPV6_XFRM_POLICY:
retv = -EPERM;
if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
break;
retv = xfrm_user_policy(sk, optname, optval, optlen);
break;
case IPV6_ADDR_PREFERENCES:
{
unsigned int pref = 0;
unsigned int prefmask = ~0;
if (optlen < sizeof(int))
goto e_inval;
retv = -EINVAL;
/* check PUBLIC/TMP/PUBTMP_DEFAULT conflicts */
switch (val & (IPV6_PREFER_SRC_PUBLIC|
IPV6_PREFER_SRC_TMP|
IPV6_PREFER_SRC_PUBTMP_DEFAULT)) {
case IPV6_PREFER_SRC_PUBLIC:
pref |= IPV6_PREFER_SRC_PUBLIC;
break;
case IPV6_PREFER_SRC_TMP:
pref |= IPV6_PREFER_SRC_TMP;
break;
case IPV6_PREFER_SRC_PUBTMP_DEFAULT:
break;
case 0:
goto pref_skip_pubtmp;
default:
goto e_inval;
}
prefmask &= ~(IPV6_PREFER_SRC_PUBLIC|
IPV6_PREFER_SRC_TMP);
pref_skip_pubtmp:
/* check HOME/COA conflicts */
switch (val & (IPV6_PREFER_SRC_HOME|IPV6_PREFER_SRC_COA)) {
case IPV6_PREFER_SRC_HOME:
break;
case IPV6_PREFER_SRC_COA:
pref |= IPV6_PREFER_SRC_COA;
case 0:
goto pref_skip_coa;
default:
goto e_inval;
}
prefmask &= ~IPV6_PREFER_SRC_COA;
pref_skip_coa:
/* check CGA/NONCGA conflicts */
switch (val & (IPV6_PREFER_SRC_CGA|IPV6_PREFER_SRC_NONCGA)) {
case IPV6_PREFER_SRC_CGA:
case IPV6_PREFER_SRC_NONCGA:
case 0:
break;
default:
goto e_inval;
}
np->srcprefs = (np->srcprefs & prefmask) | pref;
retv = 0;
break;
}
case IPV6_MINHOPCOUNT:
if (optlen < sizeof(int))
goto e_inval;
if (val < 0 || val > 255)
goto e_inval;
np->min_hopcount = val;
retv = 0;
break;
case IPV6_DONTFRAG:
np->dontfrag = valbool;
retv = 0;
break;
case IPV6_AUTOFLOWLABEL:
np->autoflowlabel = valbool;
retv = 0;
break;
}
release_sock(sk);
if (needs_rtnl)
rtnl_unlock();
return retv;
e_inval:
release_sock(sk);
if (needs_rtnl)
rtnl_unlock();
return -EINVAL;
} | 3220 | True | 1 |
||
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Use After Free | Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. |
The use of previously-freed memory can have any number of adverse consequences, ranging from the corruption of valid data to the execution of arbitrary code, depending on the instantiation and timing of the flaw. The simplest way data corruption may occur involves the system's reuse of the freed memory. Use-after-free errors have two common and sometimes overlapping causes:
Error conditions and other exceptional circumstances.
Confusion over which part of the program is responsible for freeing the memory.
In this scenario, the memory in question is allocated to another pointer validly at some point after it has been freed. The original pointer to the freed memory is used again and points to somewhere within the new allocation. As the data is changed, it corrupts the validly used memory; this induces undefined behavior in the process.
If the newly allocated data chances to hold a class, in C++ for example, various function pointers may be scattered within the heap data. If one of these function pointers is overwritten with an address to valid shellcode, execution of arbitrary code can be achieved.
| https://cwe.mitre.org/data/definitions/416.html | 0 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | do_ipv6_setsockopt | do_ipv6_setsockopt( struct sock * sk , int level , int optname , char __user * optval , unsigned int optlen) | ['sk', 'level', 'optname', 'optval', 'optlen'] | static int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
char __user *optval, unsigned int optlen)
{
struct ipv6_pinfo *np = inet6_sk(sk);
struct net *net = sock_net(sk);
int val, valbool;
int retv = -ENOPROTOOPT;
bool needs_rtnl = setsockopt_needs_rtnl(optname);
if (!optval)
val = 0;
else {
if (optlen >= sizeof(int)) {
if (get_user(val, (int __user *) optval))
return -EFAULT;
} else
val = 0;
}
valbool = (val != 0);
if (ip6_mroute_opt(optname))
return ip6_mroute_setsockopt(sk, optname, optval, optlen);
if (needs_rtnl)
rtnl_lock();
lock_sock(sk);
switch (optname) {
case IPV6_ADDRFORM:
if (optlen < sizeof(int))
goto e_inval;
if (val == PF_INET) {
struct ipv6_txoptions *opt;
struct sk_buff *pktopt;
if (sk->sk_type == SOCK_RAW)
break;
if (sk->sk_protocol == IPPROTO_UDP ||
sk->sk_protocol == IPPROTO_UDPLITE) {
struct udp_sock *up = udp_sk(sk);
if (up->pending == AF_INET6) {
retv = -EBUSY;
break;
}
} else if (sk->sk_protocol != IPPROTO_TCP)
break;
if (sk->sk_state != TCP_ESTABLISHED) {
retv = -ENOTCONN;
break;
}
if (ipv6_only_sock(sk) ||
!ipv6_addr_v4mapped(&sk->sk_v6_daddr)) {
retv = -EADDRNOTAVAIL;
break;
}
fl6_free_socklist(sk);
ipv6_sock_mc_close(sk);
/*
* Sock is moving from IPv6 to IPv4 (sk_prot), so
* remove it from the refcnt debug socks count in the
* original family...
*/
sk_refcnt_debug_dec(sk);
if (sk->sk_protocol == IPPROTO_TCP) {
struct inet_connection_sock *icsk = inet_csk(sk);
local_bh_disable();
sock_prot_inuse_add(net, sk->sk_prot, -1);
sock_prot_inuse_add(net, &tcp_prot, 1);
local_bh_enable();
sk->sk_prot = &tcp_prot;
icsk->icsk_af_ops = &ipv4_specific;
sk->sk_socket->ops = &inet_stream_ops;
sk->sk_family = PF_INET;
tcp_sync_mss(sk, icsk->icsk_pmtu_cookie);
} else {
struct proto *prot = &udp_prot;
if (sk->sk_protocol == IPPROTO_UDPLITE)
prot = &udplite_prot;
local_bh_disable();
sock_prot_inuse_add(net, sk->sk_prot, -1);
sock_prot_inuse_add(net, prot, 1);
local_bh_enable();
sk->sk_prot = prot;
sk->sk_socket->ops = &inet_dgram_ops;
sk->sk_family = PF_INET;
}
opt = xchg(&np->opt, NULL);
if (opt)
sock_kfree_s(sk, opt, opt->tot_len);
pktopt = xchg(&np->pktoptions, NULL);
kfree_skb(pktopt);
sk->sk_destruct = inet_sock_destruct;
/*
* ... and add it to the refcnt debug socks count
* in the new family. -acme
*/
sk_refcnt_debug_inc(sk);
module_put(THIS_MODULE);
retv = 0;
break;
}
goto e_inval;
case IPV6_V6ONLY:
if (optlen < sizeof(int) ||
inet_sk(sk)->inet_num)
goto e_inval;
sk->sk_ipv6only = valbool;
retv = 0;
break;
case IPV6_RECVPKTINFO:
if (optlen < sizeof(int))
goto e_inval;
np->rxopt.bits.rxinfo = valbool;
retv = 0;
break;
case IPV6_2292PKTINFO:
if (optlen < sizeof(int))
goto e_inval;
np->rxopt.bits.rxoinfo = valbool;
retv = 0;
break;
case IPV6_RECVHOPLIMIT:
if (optlen < sizeof(int))
goto e_inval;
np->rxopt.bits.rxhlim = valbool;
retv = 0;
break;
case IPV6_2292HOPLIMIT:
if (optlen < sizeof(int))
goto e_inval;
np->rxopt.bits.rxohlim = valbool;
retv = 0;
break;
case IPV6_RECVRTHDR:
if (optlen < sizeof(int))
goto e_inval;
np->rxopt.bits.srcrt = valbool;
retv = 0;
break;
case IPV6_2292RTHDR:
if (optlen < sizeof(int))
goto e_inval;
np->rxopt.bits.osrcrt = valbool;
retv = 0;
break;
case IPV6_RECVHOPOPTS:
if (optlen < sizeof(int))
goto e_inval;
np->rxopt.bits.hopopts = valbool;
retv = 0;
break;
case IPV6_2292HOPOPTS:
if (optlen < sizeof(int))
goto e_inval;
np->rxopt.bits.ohopopts = valbool;
retv = 0;
break;
case IPV6_RECVDSTOPTS:
if (optlen < sizeof(int))
goto e_inval;
np->rxopt.bits.dstopts = valbool;
retv = 0;
break;
case IPV6_2292DSTOPTS:
if (optlen < sizeof(int))
goto e_inval;
np->rxopt.bits.odstopts = valbool;
retv = 0;
break;
case IPV6_TCLASS:
if (optlen < sizeof(int))
goto e_inval;
if (val < -1 || val > 0xff)
goto e_inval;
/* RFC 3542, 6.5: default traffic class of 0x0 */
if (val == -1)
val = 0;
np->tclass = val;
retv = 0;
break;
case IPV6_RECVTCLASS:
if (optlen < sizeof(int))
goto e_inval;
np->rxopt.bits.rxtclass = valbool;
retv = 0;
break;
case IPV6_FLOWINFO:
if (optlen < sizeof(int))
goto e_inval;
np->rxopt.bits.rxflow = valbool;
retv = 0;
break;
case IPV6_RECVPATHMTU:
if (optlen < sizeof(int))
goto e_inval;
np->rxopt.bits.rxpmtu = valbool;
retv = 0;
break;
case IPV6_TRANSPARENT:
if (valbool && !ns_capable(net->user_ns, CAP_NET_ADMIN) &&
!ns_capable(net->user_ns, CAP_NET_RAW)) {
retv = -EPERM;
break;
}
if (optlen < sizeof(int))
goto e_inval;
/* we don't have a separate transparent bit for IPV6 we use the one in the IPv4 socket */
inet_sk(sk)->transparent = valbool;
retv = 0;
break;
case IPV6_RECVORIGDSTADDR:
if (optlen < sizeof(int))
goto e_inval;
np->rxopt.bits.rxorigdstaddr = valbool;
retv = 0;
break;
case IPV6_HOPOPTS:
case IPV6_RTHDRDSTOPTS:
case IPV6_RTHDR:
case IPV6_DSTOPTS:
{
struct ipv6_txoptions *opt;
/* remove any sticky options header with a zero option
* length, per RFC3542.
*/
if (optlen == 0)
optval = NULL;
else if (!optval)
goto e_inval;
else if (optlen < sizeof(struct ipv6_opt_hdr) ||
optlen & 0x7 || optlen > 8 * 255)
goto e_inval;
/* hop-by-hop / destination options are privileged option */
retv = -EPERM;
if (optname != IPV6_RTHDR && !ns_capable(net->user_ns, CAP_NET_RAW))
break;
opt = ipv6_renew_options(sk, np->opt, optname,
(struct ipv6_opt_hdr __user *)optval,
optlen);
if (IS_ERR(opt)) {
retv = PTR_ERR(opt);
break;
}
/* routing header option needs extra check */
retv = -EINVAL;
if (optname == IPV6_RTHDR && opt && opt->srcrt) {
struct ipv6_rt_hdr *rthdr = opt->srcrt;
switch (rthdr->type) {
#if IS_ENABLED(CONFIG_IPV6_MIP6)
case IPV6_SRCRT_TYPE_2:
if (rthdr->hdrlen != 2 ||
rthdr->segments_left != 1)
goto sticky_done;
break;
#endif
default:
goto sticky_done;
}
}
retv = 0;
opt = ipv6_update_options(sk, opt);
sticky_done:
if (opt)
sock_kfree_s(sk, opt, opt->tot_len);
break;
}
case IPV6_PKTINFO:
{
struct in6_pktinfo pkt;
if (optlen == 0)
goto e_inval;
else if (optlen < sizeof(struct in6_pktinfo) || !optval)
goto e_inval;
if (copy_from_user(&pkt, optval, sizeof(struct in6_pktinfo))) {
retv = -EFAULT;
break;
}
if (sk->sk_bound_dev_if && pkt.ipi6_ifindex != sk->sk_bound_dev_if)
goto e_inval;
np->sticky_pktinfo.ipi6_ifindex = pkt.ipi6_ifindex;
np->sticky_pktinfo.ipi6_addr = pkt.ipi6_addr;
retv = 0;
break;
}
case IPV6_2292PKTOPTIONS:
{
struct ipv6_txoptions *opt = NULL;
struct msghdr msg;
struct flowi6 fl6;
int junk;
memset(&fl6, 0, sizeof(fl6));
fl6.flowi6_oif = sk->sk_bound_dev_if;
fl6.flowi6_mark = sk->sk_mark;
if (optlen == 0)
goto update;
/* 1K is probably excessive
* 1K is surely not enough, 2K per standard header is 16K.
*/
retv = -EINVAL;
if (optlen > 64*1024)
break;
opt = sock_kmalloc(sk, sizeof(*opt) + optlen, GFP_KERNEL);
retv = -ENOBUFS;
if (!opt)
break;
memset(opt, 0, sizeof(*opt));
opt->tot_len = sizeof(*opt) + optlen;
retv = -EFAULT;
if (copy_from_user(opt+1, optval, optlen))
goto done;
msg.msg_controllen = optlen;
msg.msg_control = (void *)(opt+1);
retv = ip6_datagram_send_ctl(net, sk, &msg, &fl6, opt, &junk,
&junk, &junk);
if (retv)
goto done;
update:
retv = 0;
opt = ipv6_update_options(sk, opt);
done:
if (opt)
sock_kfree_s(sk, opt, opt->tot_len);
break;
}
case IPV6_UNICAST_HOPS:
if (optlen < sizeof(int))
goto e_inval;
if (val > 255 || val < -1)
goto e_inval;
np->hop_limit = val;
retv = 0;
break;
case IPV6_MULTICAST_HOPS:
if (sk->sk_type == SOCK_STREAM)
break;
if (optlen < sizeof(int))
goto e_inval;
if (val > 255 || val < -1)
goto e_inval;
np->mcast_hops = (val == -1 ? IPV6_DEFAULT_MCASTHOPS : val);
retv = 0;
break;
case IPV6_MULTICAST_LOOP:
if (optlen < sizeof(int))
goto e_inval;
if (val != valbool)
goto e_inval;
np->mc_loop = valbool;
retv = 0;
break;
case IPV6_UNICAST_IF:
{
struct net_device *dev = NULL;
int ifindex;
if (optlen != sizeof(int))
goto e_inval;
ifindex = (__force int)ntohl((__force __be32)val);
if (ifindex == 0) {
np->ucast_oif = 0;
retv = 0;
break;
}
dev = dev_get_by_index(net, ifindex);
retv = -EADDRNOTAVAIL;
if (!dev)
break;
dev_put(dev);
retv = -EINVAL;
if (sk->sk_bound_dev_if)
break;
np->ucast_oif = ifindex;
retv = 0;
break;
}
case IPV6_MULTICAST_IF:
if (sk->sk_type == SOCK_STREAM)
break;
if (optlen < sizeof(int))
goto e_inval;
if (val) {
struct net_device *dev;
if (sk->sk_bound_dev_if && sk->sk_bound_dev_if != val)
goto e_inval;
dev = dev_get_by_index(net, val);
if (!dev) {
retv = -ENODEV;
break;
}
dev_put(dev);
}
np->mcast_oif = val;
retv = 0;
break;
case IPV6_ADD_MEMBERSHIP:
case IPV6_DROP_MEMBERSHIP:
{
struct ipv6_mreq mreq;
if (optlen < sizeof(struct ipv6_mreq))
goto e_inval;
retv = -EPROTO;
if (inet_sk(sk)->is_icsk)
break;
retv = -EFAULT;
if (copy_from_user(&mreq, optval, sizeof(struct ipv6_mreq)))
break;
if (optname == IPV6_ADD_MEMBERSHIP)
retv = ipv6_sock_mc_join(sk, mreq.ipv6mr_ifindex, &mreq.ipv6mr_multiaddr);
else
retv = ipv6_sock_mc_drop(sk, mreq.ipv6mr_ifindex, &mreq.ipv6mr_multiaddr);
break;
}
case IPV6_JOIN_ANYCAST:
case IPV6_LEAVE_ANYCAST:
{
struct ipv6_mreq mreq;
if (optlen < sizeof(struct ipv6_mreq))
goto e_inval;
retv = -EFAULT;
if (copy_from_user(&mreq, optval, sizeof(struct ipv6_mreq)))
break;
if (optname == IPV6_JOIN_ANYCAST)
retv = ipv6_sock_ac_join(sk, mreq.ipv6mr_ifindex, &mreq.ipv6mr_acaddr);
else
retv = ipv6_sock_ac_drop(sk, mreq.ipv6mr_ifindex, &mreq.ipv6mr_acaddr);
break;
}
case MCAST_JOIN_GROUP:
case MCAST_LEAVE_GROUP:
{
struct group_req greq;
struct sockaddr_in6 *psin6;
if (optlen < sizeof(struct group_req))
goto e_inval;
retv = -EFAULT;
if (copy_from_user(&greq, optval, sizeof(struct group_req)))
break;
if (greq.gr_group.ss_family != AF_INET6) {
retv = -EADDRNOTAVAIL;
break;
}
psin6 = (struct sockaddr_in6 *)&greq.gr_group;
if (optname == MCAST_JOIN_GROUP)
retv = ipv6_sock_mc_join(sk, greq.gr_interface,
&psin6->sin6_addr);
else
retv = ipv6_sock_mc_drop(sk, greq.gr_interface,
&psin6->sin6_addr);
break;
}
case MCAST_JOIN_SOURCE_GROUP:
case MCAST_LEAVE_SOURCE_GROUP:
case MCAST_BLOCK_SOURCE:
case MCAST_UNBLOCK_SOURCE:
{
struct group_source_req greqs;
int omode, add;
if (optlen < sizeof(struct group_source_req))
goto e_inval;
if (copy_from_user(&greqs, optval, sizeof(greqs))) {
retv = -EFAULT;
break;
}
if (greqs.gsr_group.ss_family != AF_INET6 ||
greqs.gsr_source.ss_family != AF_INET6) {
retv = -EADDRNOTAVAIL;
break;
}
if (optname == MCAST_BLOCK_SOURCE) {
omode = MCAST_EXCLUDE;
add = 1;
} else if (optname == MCAST_UNBLOCK_SOURCE) {
omode = MCAST_EXCLUDE;
add = 0;
} else if (optname == MCAST_JOIN_SOURCE_GROUP) {
struct sockaddr_in6 *psin6;
psin6 = (struct sockaddr_in6 *)&greqs.gsr_group;
retv = ipv6_sock_mc_join(sk, greqs.gsr_interface,
&psin6->sin6_addr);
/* prior join w/ different source is ok */
if (retv && retv != -EADDRINUSE)
break;
omode = MCAST_INCLUDE;
add = 1;
} else /* MCAST_LEAVE_SOURCE_GROUP */ {
omode = MCAST_INCLUDE;
add = 0;
}
retv = ip6_mc_source(add, omode, sk, &greqs);
break;
}
case MCAST_MSFILTER:
{
struct group_filter *gsf;
if (optlen < GROUP_FILTER_SIZE(0))
goto e_inval;
if (optlen > sysctl_optmem_max) {
retv = -ENOBUFS;
break;
}
gsf = kmalloc(optlen, GFP_KERNEL);
if (!gsf) {
retv = -ENOBUFS;
break;
}
retv = -EFAULT;
if (copy_from_user(gsf, optval, optlen)) {
kfree(gsf);
break;
}
/* numsrc >= (4G-140)/128 overflow in 32 bits */
if (gsf->gf_numsrc >= 0x1ffffffU ||
gsf->gf_numsrc > sysctl_mld_max_msf) {
kfree(gsf);
retv = -ENOBUFS;
break;
}
if (GROUP_FILTER_SIZE(gsf->gf_numsrc) > optlen) {
kfree(gsf);
retv = -EINVAL;
break;
}
retv = ip6_mc_msfilter(sk, gsf);
kfree(gsf);
break;
}
case IPV6_ROUTER_ALERT:
if (optlen < sizeof(int))
goto e_inval;
retv = ip6_ra_control(sk, val);
break;
case IPV6_MTU_DISCOVER:
if (optlen < sizeof(int))
goto e_inval;
if (val < IPV6_PMTUDISC_DONT || val > IPV6_PMTUDISC_OMIT)
goto e_inval;
np->pmtudisc = val;
retv = 0;
break;
case IPV6_MTU:
if (optlen < sizeof(int))
goto e_inval;
if (val && val < IPV6_MIN_MTU)
goto e_inval;
np->frag_size = val;
retv = 0;
break;
case IPV6_RECVERR:
if (optlen < sizeof(int))
goto e_inval;
np->recverr = valbool;
if (!val)
skb_queue_purge(&sk->sk_error_queue);
retv = 0;
break;
case IPV6_FLOWINFO_SEND:
if (optlen < sizeof(int))
goto e_inval;
np->sndflow = valbool;
retv = 0;
break;
case IPV6_FLOWLABEL_MGR:
retv = ipv6_flowlabel_opt(sk, optval, optlen);
break;
case IPV6_IPSEC_POLICY:
case IPV6_XFRM_POLICY:
retv = -EPERM;
if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
break;
retv = xfrm_user_policy(sk, optname, optval, optlen);
break;
case IPV6_ADDR_PREFERENCES:
{
unsigned int pref = 0;
unsigned int prefmask = ~0;
if (optlen < sizeof(int))
goto e_inval;
retv = -EINVAL;
/* check PUBLIC/TMP/PUBTMP_DEFAULT conflicts */
switch (val & (IPV6_PREFER_SRC_PUBLIC|
IPV6_PREFER_SRC_TMP|
IPV6_PREFER_SRC_PUBTMP_DEFAULT)) {
case IPV6_PREFER_SRC_PUBLIC:
pref |= IPV6_PREFER_SRC_PUBLIC;
break;
case IPV6_PREFER_SRC_TMP:
pref |= IPV6_PREFER_SRC_TMP;
break;
case IPV6_PREFER_SRC_PUBTMP_DEFAULT:
break;
case 0:
goto pref_skip_pubtmp;
default:
goto e_inval;
}
prefmask &= ~(IPV6_PREFER_SRC_PUBLIC|
IPV6_PREFER_SRC_TMP);
pref_skip_pubtmp:
/* check HOME/COA conflicts */
switch (val & (IPV6_PREFER_SRC_HOME|IPV6_PREFER_SRC_COA)) {
case IPV6_PREFER_SRC_HOME:
break;
case IPV6_PREFER_SRC_COA:
pref |= IPV6_PREFER_SRC_COA;
case 0:
goto pref_skip_coa;
default:
goto e_inval;
}
prefmask &= ~IPV6_PREFER_SRC_COA;
pref_skip_coa:
/* check CGA/NONCGA conflicts */
switch (val & (IPV6_PREFER_SRC_CGA|IPV6_PREFER_SRC_NONCGA)) {
case IPV6_PREFER_SRC_CGA:
case IPV6_PREFER_SRC_NONCGA:
case 0:
break;
default:
goto e_inval;
}
np->srcprefs = (np->srcprefs & prefmask) | pref;
retv = 0;
break;
}
case IPV6_MINHOPCOUNT:
if (optlen < sizeof(int))
goto e_inval;
if (val < 0 || val > 255)
goto e_inval;
np->min_hopcount = val;
retv = 0;
break;
case IPV6_DONTFRAG:
np->dontfrag = valbool;
retv = 0;
break;
case IPV6_AUTOFLOWLABEL:
np->autoflowlabel = valbool;
retv = 0;
break;
}
release_sock(sk);
if (needs_rtnl)
rtnl_unlock();
return retv;
e_inval:
release_sock(sk);
if (needs_rtnl)
rtnl_unlock();
return -EINVAL;
} | 3220 | True | 1 |
|
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | ipv6_update_options | ipv6_update_options( struct sock * sk , struct ipv6_txoptions * opt) | ['sk', 'opt'] | struct ipv6_txoptions *ipv6_update_options(struct sock *sk,
struct ipv6_txoptions *opt)
{
if (inet_sk(sk)->is_icsk) {
if (opt &&
!((1 << sk->sk_state) & (TCPF_LISTEN | TCPF_CLOSE)) &&
inet_sk(sk)->inet_daddr != LOOPBACK4_IPV6) {
struct inet_connection_sock *icsk = inet_csk(sk);
icsk->icsk_ext_hdr_len = opt->opt_flen + opt->opt_nflen;
icsk->icsk_sync_mss(sk, icsk->icsk_pmtu_cookie);
}
}
opt = xchg(&inet6_sk(sk)->opt, opt);
sk_dst_reset(sk);
return opt;
} | 114 | True | 1 |
||
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Use After Free | Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. |
The use of previously-freed memory can have any number of adverse consequences, ranging from the corruption of valid data to the execution of arbitrary code, depending on the instantiation and timing of the flaw. The simplest way data corruption may occur involves the system's reuse of the freed memory. Use-after-free errors have two common and sometimes overlapping causes:
Error conditions and other exceptional circumstances.
Confusion over which part of the program is responsible for freeing the memory.
In this scenario, the memory in question is allocated to another pointer validly at some point after it has been freed. The original pointer to the freed memory is used again and points to somewhere within the new allocation. As the data is changed, it corrupts the validly used memory; this induces undefined behavior in the process.
If the newly allocated data chances to hold a class, in C++ for example, various function pointers may be scattered within the heap data. If one of these function pointers is overwritten with an address to valid shellcode, execution of arbitrary code can be achieved.
| https://cwe.mitre.org/data/definitions/416.html | 0 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | ipv6_update_options | ipv6_update_options( struct sock * sk , struct ipv6_txoptions * opt) | ['sk', 'opt'] | struct ipv6_txoptions *ipv6_update_options(struct sock *sk,
struct ipv6_txoptions *opt)
{
if (inet_sk(sk)->is_icsk) {
if (opt &&
!((1 << sk->sk_state) & (TCPF_LISTEN | TCPF_CLOSE)) &&
inet_sk(sk)->inet_daddr != LOOPBACK4_IPV6) {
struct inet_connection_sock *icsk = inet_csk(sk);
icsk->icsk_ext_hdr_len = opt->opt_flen + opt->opt_nflen;
icsk->icsk_sync_mss(sk, icsk->icsk_pmtu_cookie);
}
}
opt = xchg(&inet6_sk(sk)->opt, opt);
sk_dst_reset(sk);
return opt;
} | 114 | True | 1 |
|
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | rawv6_sendmsg | rawv6_sendmsg( struct sock * sk , struct msghdr * msg , size_t len) | ['sk', 'msg', 'len'] | static int rawv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
{
struct ipv6_txoptions opt_space;
DECLARE_SOCKADDR(struct sockaddr_in6 *, sin6, msg->msg_name);
struct in6_addr *daddr, *final_p, final;
struct inet_sock *inet = inet_sk(sk);
struct ipv6_pinfo *np = inet6_sk(sk);
struct raw6_sock *rp = raw6_sk(sk);
struct ipv6_txoptions *opt = NULL;
struct ip6_flowlabel *flowlabel = NULL;
struct dst_entry *dst = NULL;
struct raw6_frag_vec rfv;
struct flowi6 fl6;
int addr_len = msg->msg_namelen;
int hlimit = -1;
int tclass = -1;
int dontfrag = -1;
u16 proto;
int err;
/* Rough check on arithmetic overflow,
better check is made in ip6_append_data().
*/
if (len > INT_MAX)
return -EMSGSIZE;
/* Mirror BSD error message compatibility */
if (msg->msg_flags & MSG_OOB)
return -EOPNOTSUPP;
/*
* Get and verify the address.
*/
memset(&fl6, 0, sizeof(fl6));
fl6.flowi6_mark = sk->sk_mark;
if (sin6) {
if (addr_len < SIN6_LEN_RFC2133)
return -EINVAL;
if (sin6->sin6_family && sin6->sin6_family != AF_INET6)
return -EAFNOSUPPORT;
/* port is the proto value [0..255] carried in nexthdr */
proto = ntohs(sin6->sin6_port);
if (!proto)
proto = inet->inet_num;
else if (proto != inet->inet_num)
return -EINVAL;
if (proto > 255)
return -EINVAL;
daddr = &sin6->sin6_addr;
if (np->sndflow) {
fl6.flowlabel = sin6->sin6_flowinfo&IPV6_FLOWINFO_MASK;
if (fl6.flowlabel&IPV6_FLOWLABEL_MASK) {
flowlabel = fl6_sock_lookup(sk, fl6.flowlabel);
if (!flowlabel)
return -EINVAL;
}
}
/*
* Otherwise it will be difficult to maintain
* sk->sk_dst_cache.
*/
if (sk->sk_state == TCP_ESTABLISHED &&
ipv6_addr_equal(daddr, &sk->sk_v6_daddr))
daddr = &sk->sk_v6_daddr;
if (addr_len >= sizeof(struct sockaddr_in6) &&
sin6->sin6_scope_id &&
__ipv6_addr_needs_scope_id(__ipv6_addr_type(daddr)))
fl6.flowi6_oif = sin6->sin6_scope_id;
} else {
if (sk->sk_state != TCP_ESTABLISHED)
return -EDESTADDRREQ;
proto = inet->inet_num;
daddr = &sk->sk_v6_daddr;
fl6.flowlabel = np->flow_label;
}
if (fl6.flowi6_oif == 0)
fl6.flowi6_oif = sk->sk_bound_dev_if;
if (msg->msg_controllen) {
opt = &opt_space;
memset(opt, 0, sizeof(struct ipv6_txoptions));
opt->tot_len = sizeof(struct ipv6_txoptions);
err = ip6_datagram_send_ctl(sock_net(sk), sk, msg, &fl6, opt,
&hlimit, &tclass, &dontfrag);
if (err < 0) {
fl6_sock_release(flowlabel);
return err;
}
if ((fl6.flowlabel&IPV6_FLOWLABEL_MASK) && !flowlabel) {
flowlabel = fl6_sock_lookup(sk, fl6.flowlabel);
if (!flowlabel)
return -EINVAL;
}
if (!(opt->opt_nflen|opt->opt_flen))
opt = NULL;
}
if (!opt)
opt = np->opt;
if (flowlabel)
opt = fl6_merge_options(&opt_space, flowlabel, opt);
opt = ipv6_fixup_options(&opt_space, opt);
fl6.flowi6_proto = proto;
rfv.msg = msg;
rfv.hlen = 0;
err = rawv6_probe_proto_opt(&rfv, &fl6);
if (err)
goto out;
if (!ipv6_addr_any(daddr))
fl6.daddr = *daddr;
else
fl6.daddr.s6_addr[15] = 0x1; /* :: means loopback (BSD'ism) */
if (ipv6_addr_any(&fl6.saddr) && !ipv6_addr_any(&np->saddr))
fl6.saddr = np->saddr;
final_p = fl6_update_dst(&fl6, opt, &final);
if (!fl6.flowi6_oif && ipv6_addr_is_multicast(&fl6.daddr))
fl6.flowi6_oif = np->mcast_oif;
else if (!fl6.flowi6_oif)
fl6.flowi6_oif = np->ucast_oif;
security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
if (inet->hdrincl)
fl6.flowi6_flags |= FLOWI_FLAG_KNOWN_NH;
dst = ip6_dst_lookup_flow(sk, &fl6, final_p);
if (IS_ERR(dst)) {
err = PTR_ERR(dst);
goto out;
}
if (hlimit < 0)
hlimit = ip6_sk_dst_hoplimit(np, &fl6, dst);
if (tclass < 0)
tclass = np->tclass;
if (dontfrag < 0)
dontfrag = np->dontfrag;
if (msg->msg_flags&MSG_CONFIRM)
goto do_confirm;
back_from_confirm:
if (inet->hdrincl)
err = rawv6_send_hdrinc(sk, msg, len, &fl6, &dst, msg->msg_flags);
else {
lock_sock(sk);
err = ip6_append_data(sk, raw6_getfrag, &rfv,
len, 0, hlimit, tclass, opt, &fl6, (struct rt6_info *)dst,
msg->msg_flags, dontfrag);
if (err)
ip6_flush_pending_frames(sk);
else if (!(msg->msg_flags & MSG_MORE))
err = rawv6_push_pending_frames(sk, &fl6, rp);
release_sock(sk);
}
done:
dst_release(dst);
out:
fl6_sock_release(flowlabel);
return err < 0 ? err : len;
do_confirm:
dst_confirm(dst);
if (!(msg->msg_flags & MSG_PROBE) || len)
goto back_from_confirm;
err = 0;
goto done;
} | 998 | True | 1 |
||
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Use After Free | Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. |
The use of previously-freed memory can have any number of adverse consequences, ranging from the corruption of valid data to the execution of arbitrary code, depending on the instantiation and timing of the flaw. The simplest way data corruption may occur involves the system's reuse of the freed memory. Use-after-free errors have two common and sometimes overlapping causes:
Error conditions and other exceptional circumstances.
Confusion over which part of the program is responsible for freeing the memory.
In this scenario, the memory in question is allocated to another pointer validly at some point after it has been freed. The original pointer to the freed memory is used again and points to somewhere within the new allocation. As the data is changed, it corrupts the validly used memory; this induces undefined behavior in the process.
If the newly allocated data chances to hold a class, in C++ for example, various function pointers may be scattered within the heap data. If one of these function pointers is overwritten with an address to valid shellcode, execution of arbitrary code can be achieved.
| https://cwe.mitre.org/data/definitions/416.html | 0 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | rawv6_sendmsg | rawv6_sendmsg( struct sock * sk , struct msghdr * msg , size_t len) | ['sk', 'msg', 'len'] | static int rawv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
{
struct ipv6_txoptions opt_space;
DECLARE_SOCKADDR(struct sockaddr_in6 *, sin6, msg->msg_name);
struct in6_addr *daddr, *final_p, final;
struct inet_sock *inet = inet_sk(sk);
struct ipv6_pinfo *np = inet6_sk(sk);
struct raw6_sock *rp = raw6_sk(sk);
struct ipv6_txoptions *opt = NULL;
struct ip6_flowlabel *flowlabel = NULL;
struct dst_entry *dst = NULL;
struct raw6_frag_vec rfv;
struct flowi6 fl6;
int addr_len = msg->msg_namelen;
int hlimit = -1;
int tclass = -1;
int dontfrag = -1;
u16 proto;
int err;
/* Rough check on arithmetic overflow,
better check is made in ip6_append_data().
*/
if (len > INT_MAX)
return -EMSGSIZE;
/* Mirror BSD error message compatibility */
if (msg->msg_flags & MSG_OOB)
return -EOPNOTSUPP;
/*
* Get and verify the address.
*/
memset(&fl6, 0, sizeof(fl6));
fl6.flowi6_mark = sk->sk_mark;
if (sin6) {
if (addr_len < SIN6_LEN_RFC2133)
return -EINVAL;
if (sin6->sin6_family && sin6->sin6_family != AF_INET6)
return -EAFNOSUPPORT;
/* port is the proto value [0..255] carried in nexthdr */
proto = ntohs(sin6->sin6_port);
if (!proto)
proto = inet->inet_num;
else if (proto != inet->inet_num)
return -EINVAL;
if (proto > 255)
return -EINVAL;
daddr = &sin6->sin6_addr;
if (np->sndflow) {
fl6.flowlabel = sin6->sin6_flowinfo&IPV6_FLOWINFO_MASK;
if (fl6.flowlabel&IPV6_FLOWLABEL_MASK) {
flowlabel = fl6_sock_lookup(sk, fl6.flowlabel);
if (!flowlabel)
return -EINVAL;
}
}
/*
* Otherwise it will be difficult to maintain
* sk->sk_dst_cache.
*/
if (sk->sk_state == TCP_ESTABLISHED &&
ipv6_addr_equal(daddr, &sk->sk_v6_daddr))
daddr = &sk->sk_v6_daddr;
if (addr_len >= sizeof(struct sockaddr_in6) &&
sin6->sin6_scope_id &&
__ipv6_addr_needs_scope_id(__ipv6_addr_type(daddr)))
fl6.flowi6_oif = sin6->sin6_scope_id;
} else {
if (sk->sk_state != TCP_ESTABLISHED)
return -EDESTADDRREQ;
proto = inet->inet_num;
daddr = &sk->sk_v6_daddr;
fl6.flowlabel = np->flow_label;
}
if (fl6.flowi6_oif == 0)
fl6.flowi6_oif = sk->sk_bound_dev_if;
if (msg->msg_controllen) {
opt = &opt_space;
memset(opt, 0, sizeof(struct ipv6_txoptions));
opt->tot_len = sizeof(struct ipv6_txoptions);
err = ip6_datagram_send_ctl(sock_net(sk), sk, msg, &fl6, opt,
&hlimit, &tclass, &dontfrag);
if (err < 0) {
fl6_sock_release(flowlabel);
return err;
}
if ((fl6.flowlabel&IPV6_FLOWLABEL_MASK) && !flowlabel) {
flowlabel = fl6_sock_lookup(sk, fl6.flowlabel);
if (!flowlabel)
return -EINVAL;
}
if (!(opt->opt_nflen|opt->opt_flen))
opt = NULL;
}
if (!opt)
opt = np->opt;
if (flowlabel)
opt = fl6_merge_options(&opt_space, flowlabel, opt);
opt = ipv6_fixup_options(&opt_space, opt);
fl6.flowi6_proto = proto;
rfv.msg = msg;
rfv.hlen = 0;
err = rawv6_probe_proto_opt(&rfv, &fl6);
if (err)
goto out;
if (!ipv6_addr_any(daddr))
fl6.daddr = *daddr;
else
fl6.daddr.s6_addr[15] = 0x1; /* :: means loopback (BSD'ism) */
if (ipv6_addr_any(&fl6.saddr) && !ipv6_addr_any(&np->saddr))
fl6.saddr = np->saddr;
final_p = fl6_update_dst(&fl6, opt, &final);
if (!fl6.flowi6_oif && ipv6_addr_is_multicast(&fl6.daddr))
fl6.flowi6_oif = np->mcast_oif;
else if (!fl6.flowi6_oif)
fl6.flowi6_oif = np->ucast_oif;
security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
if (inet->hdrincl)
fl6.flowi6_flags |= FLOWI_FLAG_KNOWN_NH;
dst = ip6_dst_lookup_flow(sk, &fl6, final_p);
if (IS_ERR(dst)) {
err = PTR_ERR(dst);
goto out;
}
if (hlimit < 0)
hlimit = ip6_sk_dst_hoplimit(np, &fl6, dst);
if (tclass < 0)
tclass = np->tclass;
if (dontfrag < 0)
dontfrag = np->dontfrag;
if (msg->msg_flags&MSG_CONFIRM)
goto do_confirm;
back_from_confirm:
if (inet->hdrincl)
err = rawv6_send_hdrinc(sk, msg, len, &fl6, &dst, msg->msg_flags);
else {
lock_sock(sk);
err = ip6_append_data(sk, raw6_getfrag, &rfv,
len, 0, hlimit, tclass, opt, &fl6, (struct rt6_info *)dst,
msg->msg_flags, dontfrag);
if (err)
ip6_flush_pending_frames(sk);
else if (!(msg->msg_flags & MSG_MORE))
err = rawv6_push_pending_frames(sk, &fl6, rp);
release_sock(sk);
}
done:
dst_release(dst);
out:
fl6_sock_release(flowlabel);
return err < 0 ? err : len;
do_confirm:
dst_confirm(dst);
if (!(msg->msg_flags & MSG_PROBE) || len)
goto back_from_confirm;
err = 0;
goto done;
} | 998 | True | 1 |
|
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | cookie_v6_check | cookie_v6_check( struct sock * sk , struct sk_buff * skb) | ['sk', 'skb'] | struct sock *cookie_v6_check(struct sock *sk, struct sk_buff *skb)
{
struct tcp_options_received tcp_opt;
struct inet_request_sock *ireq;
struct tcp_request_sock *treq;
struct ipv6_pinfo *np = inet6_sk(sk);
struct tcp_sock *tp = tcp_sk(sk);
const struct tcphdr *th = tcp_hdr(skb);
__u32 cookie = ntohl(th->ack_seq) - 1;
struct sock *ret = sk;
struct request_sock *req;
int mss;
struct dst_entry *dst;
__u8 rcv_wscale;
if (!sysctl_tcp_syncookies || !th->ack || th->rst)
goto out;
if (tcp_synq_no_recent_overflow(sk))
goto out;
mss = __cookie_v6_check(ipv6_hdr(skb), th, cookie);
if (mss == 0) {
NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_SYNCOOKIESFAILED);
goto out;
}
NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_SYNCOOKIESRECV);
/* check for timestamp cookie support */
memset(&tcp_opt, 0, sizeof(tcp_opt));
tcp_parse_options(skb, &tcp_opt, 0, NULL);
if (!cookie_timestamp_decode(&tcp_opt))
goto out;
ret = NULL;
req = inet_reqsk_alloc(&tcp6_request_sock_ops, sk, false);
if (!req)
goto out;
ireq = inet_rsk(req);
treq = tcp_rsk(req);
treq->tfo_listener = false;
if (security_inet_conn_request(sk, skb, req))
goto out_free;
req->mss = mss;
ireq->ir_rmt_port = th->source;
ireq->ir_num = ntohs(th->dest);
ireq->ir_v6_rmt_addr = ipv6_hdr(skb)->saddr;
ireq->ir_v6_loc_addr = ipv6_hdr(skb)->daddr;
if (ipv6_opt_accepted(sk, skb, &TCP_SKB_CB(skb)->header.h6) ||
np->rxopt.bits.rxinfo || np->rxopt.bits.rxoinfo ||
np->rxopt.bits.rxhlim || np->rxopt.bits.rxohlim) {
atomic_inc(&skb->users);
ireq->pktopts = skb;
}
ireq->ir_iif = sk->sk_bound_dev_if;
/* So that link locals have meaning */
if (!sk->sk_bound_dev_if &&
ipv6_addr_type(&ireq->ir_v6_rmt_addr) & IPV6_ADDR_LINKLOCAL)
ireq->ir_iif = tcp_v6_iif(skb);
ireq->ir_mark = inet_request_mark(sk, skb);
req->num_retrans = 0;
ireq->snd_wscale = tcp_opt.snd_wscale;
ireq->sack_ok = tcp_opt.sack_ok;
ireq->wscale_ok = tcp_opt.wscale_ok;
ireq->tstamp_ok = tcp_opt.saw_tstamp;
req->ts_recent = tcp_opt.saw_tstamp ? tcp_opt.rcv_tsval : 0;
treq->snt_synack.v64 = 0;
treq->rcv_isn = ntohl(th->seq) - 1;
treq->snt_isn = cookie;
/*
* We need to lookup the dst_entry to get the correct window size.
* This is taken from tcp_v6_syn_recv_sock. Somebody please enlighten
* me if there is a preferred way.
*/
{
struct in6_addr *final_p, final;
struct flowi6 fl6;
memset(&fl6, 0, sizeof(fl6));
fl6.flowi6_proto = IPPROTO_TCP;
fl6.daddr = ireq->ir_v6_rmt_addr;
final_p = fl6_update_dst(&fl6, np->opt, &final);
fl6.saddr = ireq->ir_v6_loc_addr;
fl6.flowi6_oif = sk->sk_bound_dev_if;
fl6.flowi6_mark = ireq->ir_mark;
fl6.fl6_dport = ireq->ir_rmt_port;
fl6.fl6_sport = inet_sk(sk)->inet_sport;
security_req_classify_flow(req, flowi6_to_flowi(&fl6));
dst = ip6_dst_lookup_flow(sk, &fl6, final_p);
if (IS_ERR(dst))
goto out_free;
}
req->rsk_window_clamp = tp->window_clamp ? :dst_metric(dst, RTAX_WINDOW);
tcp_select_initial_window(tcp_full_space(sk), req->mss,
&req->rsk_rcv_wnd, &req->rsk_window_clamp,
ireq->wscale_ok, &rcv_wscale,
dst_metric(dst, RTAX_INITRWND));
ireq->rcv_wscale = rcv_wscale;
ireq->ecn_ok = cookie_ecn_ok(&tcp_opt, sock_net(sk), dst);
ret = tcp_get_cookie_sock(sk, skb, req, dst);
out:
return ret;
out_free:
reqsk_free(req);
return NULL;
} | 733 | True | 1 |
||
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Use After Free | Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. |
The use of previously-freed memory can have any number of adverse consequences, ranging from the corruption of valid data to the execution of arbitrary code, depending on the instantiation and timing of the flaw. The simplest way data corruption may occur involves the system's reuse of the freed memory. Use-after-free errors have two common and sometimes overlapping causes:
Error conditions and other exceptional circumstances.
Confusion over which part of the program is responsible for freeing the memory.
In this scenario, the memory in question is allocated to another pointer validly at some point after it has been freed. The original pointer to the freed memory is used again and points to somewhere within the new allocation. As the data is changed, it corrupts the validly used memory; this induces undefined behavior in the process.
If the newly allocated data chances to hold a class, in C++ for example, various function pointers may be scattered within the heap data. If one of these function pointers is overwritten with an address to valid shellcode, execution of arbitrary code can be achieved.
| https://cwe.mitre.org/data/definitions/416.html | 0 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | cookie_v6_check | cookie_v6_check( struct sock * sk , struct sk_buff * skb) | ['sk', 'skb'] | struct sock *cookie_v6_check(struct sock *sk, struct sk_buff *skb)
{
struct tcp_options_received tcp_opt;
struct inet_request_sock *ireq;
struct tcp_request_sock *treq;
struct ipv6_pinfo *np = inet6_sk(sk);
struct tcp_sock *tp = tcp_sk(sk);
const struct tcphdr *th = tcp_hdr(skb);
__u32 cookie = ntohl(th->ack_seq) - 1;
struct sock *ret = sk;
struct request_sock *req;
int mss;
struct dst_entry *dst;
__u8 rcv_wscale;
if (!sysctl_tcp_syncookies || !th->ack || th->rst)
goto out;
if (tcp_synq_no_recent_overflow(sk))
goto out;
mss = __cookie_v6_check(ipv6_hdr(skb), th, cookie);
if (mss == 0) {
NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_SYNCOOKIESFAILED);
goto out;
}
NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_SYNCOOKIESRECV);
/* check for timestamp cookie support */
memset(&tcp_opt, 0, sizeof(tcp_opt));
tcp_parse_options(skb, &tcp_opt, 0, NULL);
if (!cookie_timestamp_decode(&tcp_opt))
goto out;
ret = NULL;
req = inet_reqsk_alloc(&tcp6_request_sock_ops, sk, false);
if (!req)
goto out;
ireq = inet_rsk(req);
treq = tcp_rsk(req);
treq->tfo_listener = false;
if (security_inet_conn_request(sk, skb, req))
goto out_free;
req->mss = mss;
ireq->ir_rmt_port = th->source;
ireq->ir_num = ntohs(th->dest);
ireq->ir_v6_rmt_addr = ipv6_hdr(skb)->saddr;
ireq->ir_v6_loc_addr = ipv6_hdr(skb)->daddr;
if (ipv6_opt_accepted(sk, skb, &TCP_SKB_CB(skb)->header.h6) ||
np->rxopt.bits.rxinfo || np->rxopt.bits.rxoinfo ||
np->rxopt.bits.rxhlim || np->rxopt.bits.rxohlim) {
atomic_inc(&skb->users);
ireq->pktopts = skb;
}
ireq->ir_iif = sk->sk_bound_dev_if;
/* So that link locals have meaning */
if (!sk->sk_bound_dev_if &&
ipv6_addr_type(&ireq->ir_v6_rmt_addr) & IPV6_ADDR_LINKLOCAL)
ireq->ir_iif = tcp_v6_iif(skb);
ireq->ir_mark = inet_request_mark(sk, skb);
req->num_retrans = 0;
ireq->snd_wscale = tcp_opt.snd_wscale;
ireq->sack_ok = tcp_opt.sack_ok;
ireq->wscale_ok = tcp_opt.wscale_ok;
ireq->tstamp_ok = tcp_opt.saw_tstamp;
req->ts_recent = tcp_opt.saw_tstamp ? tcp_opt.rcv_tsval : 0;
treq->snt_synack.v64 = 0;
treq->rcv_isn = ntohl(th->seq) - 1;
treq->snt_isn = cookie;
/*
* We need to lookup the dst_entry to get the correct window size.
* This is taken from tcp_v6_syn_recv_sock. Somebody please enlighten
* me if there is a preferred way.
*/
{
struct in6_addr *final_p, final;
struct flowi6 fl6;
memset(&fl6, 0, sizeof(fl6));
fl6.flowi6_proto = IPPROTO_TCP;
fl6.daddr = ireq->ir_v6_rmt_addr;
final_p = fl6_update_dst(&fl6, np->opt, &final);
fl6.saddr = ireq->ir_v6_loc_addr;
fl6.flowi6_oif = sk->sk_bound_dev_if;
fl6.flowi6_mark = ireq->ir_mark;
fl6.fl6_dport = ireq->ir_rmt_port;
fl6.fl6_sport = inet_sk(sk)->inet_sport;
security_req_classify_flow(req, flowi6_to_flowi(&fl6));
dst = ip6_dst_lookup_flow(sk, &fl6, final_p);
if (IS_ERR(dst))
goto out_free;
}
req->rsk_window_clamp = tp->window_clamp ? :dst_metric(dst, RTAX_WINDOW);
tcp_select_initial_window(tcp_full_space(sk), req->mss,
&req->rsk_rcv_wnd, &req->rsk_window_clamp,
ireq->wscale_ok, &rcv_wscale,
dst_metric(dst, RTAX_INITRWND));
ireq->rcv_wscale = rcv_wscale;
ireq->ecn_ok = cookie_ecn_ok(&tcp_opt, sock_net(sk), dst);
ret = tcp_get_cookie_sock(sk, skb, req, dst);
out:
return ret;
out_free:
reqsk_free(req);
return NULL;
} | 733 | True | 1 |
|
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | tcp_v6_connect | tcp_v6_connect( struct sock * sk , struct sockaddr * uaddr , int addr_len) | ['sk', 'uaddr', 'addr_len'] | static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
int addr_len)
{
struct sockaddr_in6 *usin = (struct sockaddr_in6 *) uaddr;
struct inet_sock *inet = inet_sk(sk);
struct inet_connection_sock *icsk = inet_csk(sk);
struct ipv6_pinfo *np = inet6_sk(sk);
struct tcp_sock *tp = tcp_sk(sk);
struct in6_addr *saddr = NULL, *final_p, final;
struct flowi6 fl6;
struct dst_entry *dst;
int addr_type;
int err;
if (addr_len < SIN6_LEN_RFC2133)
return -EINVAL;
if (usin->sin6_family != AF_INET6)
return -EAFNOSUPPORT;
memset(&fl6, 0, sizeof(fl6));
if (np->sndflow) {
fl6.flowlabel = usin->sin6_flowinfo&IPV6_FLOWINFO_MASK;
IP6_ECN_flow_init(fl6.flowlabel);
if (fl6.flowlabel&IPV6_FLOWLABEL_MASK) {
struct ip6_flowlabel *flowlabel;
flowlabel = fl6_sock_lookup(sk, fl6.flowlabel);
if (!flowlabel)
return -EINVAL;
fl6_sock_release(flowlabel);
}
}
/*
* connect() to INADDR_ANY means loopback (BSD'ism).
*/
if (ipv6_addr_any(&usin->sin6_addr))
usin->sin6_addr.s6_addr[15] = 0x1;
addr_type = ipv6_addr_type(&usin->sin6_addr);
if (addr_type & IPV6_ADDR_MULTICAST)
return -ENETUNREACH;
if (addr_type&IPV6_ADDR_LINKLOCAL) {
if (addr_len >= sizeof(struct sockaddr_in6) &&
usin->sin6_scope_id) {
/* If interface is set while binding, indices
* must coincide.
*/
if (sk->sk_bound_dev_if &&
sk->sk_bound_dev_if != usin->sin6_scope_id)
return -EINVAL;
sk->sk_bound_dev_if = usin->sin6_scope_id;
}
/* Connect to link-local address requires an interface */
if (!sk->sk_bound_dev_if)
return -EINVAL;
}
if (tp->rx_opt.ts_recent_stamp &&
!ipv6_addr_equal(&sk->sk_v6_daddr, &usin->sin6_addr)) {
tp->rx_opt.ts_recent = 0;
tp->rx_opt.ts_recent_stamp = 0;
tp->write_seq = 0;
}
sk->sk_v6_daddr = usin->sin6_addr;
np->flow_label = fl6.flowlabel;
/*
* TCP over IPv4
*/
if (addr_type == IPV6_ADDR_MAPPED) {
u32 exthdrlen = icsk->icsk_ext_hdr_len;
struct sockaddr_in sin;
SOCK_DEBUG(sk, "connect: ipv4 mapped\n");
if (__ipv6_only_sock(sk))
return -ENETUNREACH;
sin.sin_family = AF_INET;
sin.sin_port = usin->sin6_port;
sin.sin_addr.s_addr = usin->sin6_addr.s6_addr32[3];
icsk->icsk_af_ops = &ipv6_mapped;
sk->sk_backlog_rcv = tcp_v4_do_rcv;
#ifdef CONFIG_TCP_MD5SIG
tp->af_specific = &tcp_sock_ipv6_mapped_specific;
#endif
err = tcp_v4_connect(sk, (struct sockaddr *)&sin, sizeof(sin));
if (err) {
icsk->icsk_ext_hdr_len = exthdrlen;
icsk->icsk_af_ops = &ipv6_specific;
sk->sk_backlog_rcv = tcp_v6_do_rcv;
#ifdef CONFIG_TCP_MD5SIG
tp->af_specific = &tcp_sock_ipv6_specific;
#endif
goto failure;
}
np->saddr = sk->sk_v6_rcv_saddr;
return err;
}
if (!ipv6_addr_any(&sk->sk_v6_rcv_saddr))
saddr = &sk->sk_v6_rcv_saddr;
fl6.flowi6_proto = IPPROTO_TCP;
fl6.daddr = sk->sk_v6_daddr;
fl6.saddr = saddr ? *saddr : np->saddr;
fl6.flowi6_oif = sk->sk_bound_dev_if;
fl6.flowi6_mark = sk->sk_mark;
fl6.fl6_dport = usin->sin6_port;
fl6.fl6_sport = inet->inet_sport;
final_p = fl6_update_dst(&fl6, np->opt, &final);
security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
dst = ip6_dst_lookup_flow(sk, &fl6, final_p);
if (IS_ERR(dst)) {
err = PTR_ERR(dst);
goto failure;
}
if (!saddr) {
saddr = &fl6.saddr;
sk->sk_v6_rcv_saddr = *saddr;
}
/* set the source address */
np->saddr = *saddr;
inet->inet_rcv_saddr = LOOPBACK4_IPV6;
sk->sk_gso_type = SKB_GSO_TCPV6;
__ip6_dst_store(sk, dst, NULL, NULL);
if (tcp_death_row.sysctl_tw_recycle &&
!tp->rx_opt.ts_recent_stamp &&
ipv6_addr_equal(&fl6.daddr, &sk->sk_v6_daddr))
tcp_fetch_timewait_stamp(sk, dst);
icsk->icsk_ext_hdr_len = 0;
if (np->opt)
icsk->icsk_ext_hdr_len = (np->opt->opt_flen +
np->opt->opt_nflen);
tp->rx_opt.mss_clamp = IPV6_MIN_MTU - sizeof(struct tcphdr) - sizeof(struct ipv6hdr);
inet->inet_dport = usin->sin6_port;
tcp_set_state(sk, TCP_SYN_SENT);
err = inet6_hash_connect(&tcp_death_row, sk);
if (err)
goto late_failure;
sk_set_txhash(sk);
if (!tp->write_seq && likely(!tp->repair))
tp->write_seq = secure_tcpv6_sequence_number(np->saddr.s6_addr32,
sk->sk_v6_daddr.s6_addr32,
inet->inet_sport,
inet->inet_dport);
err = tcp_connect(sk);
if (err)
goto late_failure;
return 0;
late_failure:
tcp_set_state(sk, TCP_CLOSE);
__sk_dst_reset(sk);
failure:
inet->inet_dport = 0;
sk->sk_route_caps = 0;
return err;
} | 907 | True | 1 |
||
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Use After Free | Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. |
The use of previously-freed memory can have any number of adverse consequences, ranging from the corruption of valid data to the execution of arbitrary code, depending on the instantiation and timing of the flaw. The simplest way data corruption may occur involves the system's reuse of the freed memory. Use-after-free errors have two common and sometimes overlapping causes:
Error conditions and other exceptional circumstances.
Confusion over which part of the program is responsible for freeing the memory.
In this scenario, the memory in question is allocated to another pointer validly at some point after it has been freed. The original pointer to the freed memory is used again and points to somewhere within the new allocation. As the data is changed, it corrupts the validly used memory; this induces undefined behavior in the process.
If the newly allocated data chances to hold a class, in C++ for example, various function pointers may be scattered within the heap data. If one of these function pointers is overwritten with an address to valid shellcode, execution of arbitrary code can be achieved.
| https://cwe.mitre.org/data/definitions/416.html | 0 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | tcp_v6_connect | tcp_v6_connect( struct sock * sk , struct sockaddr * uaddr , int addr_len) | ['sk', 'uaddr', 'addr_len'] | static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
int addr_len)
{
struct sockaddr_in6 *usin = (struct sockaddr_in6 *) uaddr;
struct inet_sock *inet = inet_sk(sk);
struct inet_connection_sock *icsk = inet_csk(sk);
struct ipv6_pinfo *np = inet6_sk(sk);
struct tcp_sock *tp = tcp_sk(sk);
struct in6_addr *saddr = NULL, *final_p, final;
struct flowi6 fl6;
struct dst_entry *dst;
int addr_type;
int err;
if (addr_len < SIN6_LEN_RFC2133)
return -EINVAL;
if (usin->sin6_family != AF_INET6)
return -EAFNOSUPPORT;
memset(&fl6, 0, sizeof(fl6));
if (np->sndflow) {
fl6.flowlabel = usin->sin6_flowinfo&IPV6_FLOWINFO_MASK;
IP6_ECN_flow_init(fl6.flowlabel);
if (fl6.flowlabel&IPV6_FLOWLABEL_MASK) {
struct ip6_flowlabel *flowlabel;
flowlabel = fl6_sock_lookup(sk, fl6.flowlabel);
if (!flowlabel)
return -EINVAL;
fl6_sock_release(flowlabel);
}
}
/*
* connect() to INADDR_ANY means loopback (BSD'ism).
*/
if (ipv6_addr_any(&usin->sin6_addr))
usin->sin6_addr.s6_addr[15] = 0x1;
addr_type = ipv6_addr_type(&usin->sin6_addr);
if (addr_type & IPV6_ADDR_MULTICAST)
return -ENETUNREACH;
if (addr_type&IPV6_ADDR_LINKLOCAL) {
if (addr_len >= sizeof(struct sockaddr_in6) &&
usin->sin6_scope_id) {
/* If interface is set while binding, indices
* must coincide.
*/
if (sk->sk_bound_dev_if &&
sk->sk_bound_dev_if != usin->sin6_scope_id)
return -EINVAL;
sk->sk_bound_dev_if = usin->sin6_scope_id;
}
/* Connect to link-local address requires an interface */
if (!sk->sk_bound_dev_if)
return -EINVAL;
}
if (tp->rx_opt.ts_recent_stamp &&
!ipv6_addr_equal(&sk->sk_v6_daddr, &usin->sin6_addr)) {
tp->rx_opt.ts_recent = 0;
tp->rx_opt.ts_recent_stamp = 0;
tp->write_seq = 0;
}
sk->sk_v6_daddr = usin->sin6_addr;
np->flow_label = fl6.flowlabel;
/*
* TCP over IPv4
*/
if (addr_type == IPV6_ADDR_MAPPED) {
u32 exthdrlen = icsk->icsk_ext_hdr_len;
struct sockaddr_in sin;
SOCK_DEBUG(sk, "connect: ipv4 mapped\n");
if (__ipv6_only_sock(sk))
return -ENETUNREACH;
sin.sin_family = AF_INET;
sin.sin_port = usin->sin6_port;
sin.sin_addr.s_addr = usin->sin6_addr.s6_addr32[3];
icsk->icsk_af_ops = &ipv6_mapped;
sk->sk_backlog_rcv = tcp_v4_do_rcv;
#ifdef CONFIG_TCP_MD5SIG
tp->af_specific = &tcp_sock_ipv6_mapped_specific;
#endif
err = tcp_v4_connect(sk, (struct sockaddr *)&sin, sizeof(sin));
if (err) {
icsk->icsk_ext_hdr_len = exthdrlen;
icsk->icsk_af_ops = &ipv6_specific;
sk->sk_backlog_rcv = tcp_v6_do_rcv;
#ifdef CONFIG_TCP_MD5SIG
tp->af_specific = &tcp_sock_ipv6_specific;
#endif
goto failure;
}
np->saddr = sk->sk_v6_rcv_saddr;
return err;
}
if (!ipv6_addr_any(&sk->sk_v6_rcv_saddr))
saddr = &sk->sk_v6_rcv_saddr;
fl6.flowi6_proto = IPPROTO_TCP;
fl6.daddr = sk->sk_v6_daddr;
fl6.saddr = saddr ? *saddr : np->saddr;
fl6.flowi6_oif = sk->sk_bound_dev_if;
fl6.flowi6_mark = sk->sk_mark;
fl6.fl6_dport = usin->sin6_port;
fl6.fl6_sport = inet->inet_sport;
final_p = fl6_update_dst(&fl6, np->opt, &final);
security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
dst = ip6_dst_lookup_flow(sk, &fl6, final_p);
if (IS_ERR(dst)) {
err = PTR_ERR(dst);
goto failure;
}
if (!saddr) {
saddr = &fl6.saddr;
sk->sk_v6_rcv_saddr = *saddr;
}
/* set the source address */
np->saddr = *saddr;
inet->inet_rcv_saddr = LOOPBACK4_IPV6;
sk->sk_gso_type = SKB_GSO_TCPV6;
__ip6_dst_store(sk, dst, NULL, NULL);
if (tcp_death_row.sysctl_tw_recycle &&
!tp->rx_opt.ts_recent_stamp &&
ipv6_addr_equal(&fl6.daddr, &sk->sk_v6_daddr))
tcp_fetch_timewait_stamp(sk, dst);
icsk->icsk_ext_hdr_len = 0;
if (np->opt)
icsk->icsk_ext_hdr_len = (np->opt->opt_flen +
np->opt->opt_nflen);
tp->rx_opt.mss_clamp = IPV6_MIN_MTU - sizeof(struct tcphdr) - sizeof(struct ipv6hdr);
inet->inet_dport = usin->sin6_port;
tcp_set_state(sk, TCP_SYN_SENT);
err = inet6_hash_connect(&tcp_death_row, sk);
if (err)
goto late_failure;
sk_set_txhash(sk);
if (!tp->write_seq && likely(!tp->repair))
tp->write_seq = secure_tcpv6_sequence_number(np->saddr.s6_addr32,
sk->sk_v6_daddr.s6_addr32,
inet->inet_sport,
inet->inet_dport);
err = tcp_connect(sk);
if (err)
goto late_failure;
return 0;
late_failure:
tcp_set_state(sk, TCP_CLOSE);
__sk_dst_reset(sk);
failure:
inet->inet_dport = 0;
sk->sk_route_caps = 0;
return err;
} | 907 | True | 1 |
|
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | tcp_v6_send_synack | tcp_v6_send_synack( const struct sock * sk , struct dst_entry * dst , struct flowi * fl , struct request_sock * req , struct tcp_fastopen_cookie * foc , bool attach_req) | ['sk', 'dst', 'fl', 'req', 'foc', 'attach_req'] | static int tcp_v6_send_synack(const struct sock *sk, struct dst_entry *dst,
struct flowi *fl,
struct request_sock *req,
struct tcp_fastopen_cookie *foc,
bool attach_req)
{
struct inet_request_sock *ireq = inet_rsk(req);
struct ipv6_pinfo *np = inet6_sk(sk);
struct flowi6 *fl6 = &fl->u.ip6;
struct sk_buff *skb;
int err = -ENOMEM;
/* First, grab a route. */
if (!dst && (dst = inet6_csk_route_req(sk, fl6, req,
IPPROTO_TCP)) == NULL)
goto done;
skb = tcp_make_synack(sk, dst, req, foc, attach_req);
if (skb) {
__tcp_v6_send_check(skb, &ireq->ir_v6_loc_addr,
&ireq->ir_v6_rmt_addr);
fl6->daddr = ireq->ir_v6_rmt_addr;
if (np->repflow && ireq->pktopts)
fl6->flowlabel = ip6_flowlabel(ipv6_hdr(ireq->pktopts));
err = ip6_xmit(sk, skb, fl6, np->opt, np->tclass);
err = net_xmit_eval(err);
}
done:
return err;
} | 200 | True | 1 |
||
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Use After Free | Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. |
The use of previously-freed memory can have any number of adverse consequences, ranging from the corruption of valid data to the execution of arbitrary code, depending on the instantiation and timing of the flaw. The simplest way data corruption may occur involves the system's reuse of the freed memory. Use-after-free errors have two common and sometimes overlapping causes:
Error conditions and other exceptional circumstances.
Confusion over which part of the program is responsible for freeing the memory.
In this scenario, the memory in question is allocated to another pointer validly at some point after it has been freed. The original pointer to the freed memory is used again and points to somewhere within the new allocation. As the data is changed, it corrupts the validly used memory; this induces undefined behavior in the process.
If the newly allocated data chances to hold a class, in C++ for example, various function pointers may be scattered within the heap data. If one of these function pointers is overwritten with an address to valid shellcode, execution of arbitrary code can be achieved.
| https://cwe.mitre.org/data/definitions/416.html | 0 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | tcp_v6_send_synack | tcp_v6_send_synack( const struct sock * sk , struct dst_entry * dst , struct flowi * fl , struct request_sock * req , struct tcp_fastopen_cookie * foc , bool attach_req) | ['sk', 'dst', 'fl', 'req', 'foc', 'attach_req'] | static int tcp_v6_send_synack(const struct sock *sk, struct dst_entry *dst,
struct flowi *fl,
struct request_sock *req,
struct tcp_fastopen_cookie *foc,
bool attach_req)
{
struct inet_request_sock *ireq = inet_rsk(req);
struct ipv6_pinfo *np = inet6_sk(sk);
struct flowi6 *fl6 = &fl->u.ip6;
struct sk_buff *skb;
int err = -ENOMEM;
/* First, grab a route. */
if (!dst && (dst = inet6_csk_route_req(sk, fl6, req,
IPPROTO_TCP)) == NULL)
goto done;
skb = tcp_make_synack(sk, dst, req, foc, attach_req);
if (skb) {
__tcp_v6_send_check(skb, &ireq->ir_v6_loc_addr,
&ireq->ir_v6_rmt_addr);
fl6->daddr = ireq->ir_v6_rmt_addr;
if (np->repflow && ireq->pktopts)
fl6->flowlabel = ip6_flowlabel(ipv6_hdr(ireq->pktopts));
err = ip6_xmit(sk, skb, fl6, np->opt, np->tclass);
err = net_xmit_eval(err);
}
done:
return err;
} | 200 | True | 1 |
|
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | tcp_v6_syn_recv_sock | tcp_v6_syn_recv_sock( const struct sock * sk , struct sk_buff * skb , struct request_sock * req , struct dst_entry * dst , struct request_sock * req_unhash , bool * own_req) | ['sk', 'skb', 'req', 'dst', 'req_unhash', 'own_req'] | static struct sock *tcp_v6_syn_recv_sock(const struct sock *sk, struct sk_buff *skb,
struct request_sock *req,
struct dst_entry *dst,
struct request_sock *req_unhash,
bool *own_req)
{
struct inet_request_sock *ireq;
struct ipv6_pinfo *newnp;
const struct ipv6_pinfo *np = inet6_sk(sk);
struct tcp6_sock *newtcp6sk;
struct inet_sock *newinet;
struct tcp_sock *newtp;
struct sock *newsk;
#ifdef CONFIG_TCP_MD5SIG
struct tcp_md5sig_key *key;
#endif
struct flowi6 fl6;
if (skb->protocol == htons(ETH_P_IP)) {
/*
* v6 mapped
*/
newsk = tcp_v4_syn_recv_sock(sk, skb, req, dst,
req_unhash, own_req);
if (!newsk)
return NULL;
newtcp6sk = (struct tcp6_sock *)newsk;
inet_sk(newsk)->pinet6 = &newtcp6sk->inet6;
newinet = inet_sk(newsk);
newnp = inet6_sk(newsk);
newtp = tcp_sk(newsk);
memcpy(newnp, np, sizeof(struct ipv6_pinfo));
newnp->saddr = newsk->sk_v6_rcv_saddr;
inet_csk(newsk)->icsk_af_ops = &ipv6_mapped;
newsk->sk_backlog_rcv = tcp_v4_do_rcv;
#ifdef CONFIG_TCP_MD5SIG
newtp->af_specific = &tcp_sock_ipv6_mapped_specific;
#endif
newnp->ipv6_ac_list = NULL;
newnp->ipv6_fl_list = NULL;
newnp->pktoptions = NULL;
newnp->opt = NULL;
newnp->mcast_oif = tcp_v6_iif(skb);
newnp->mcast_hops = ipv6_hdr(skb)->hop_limit;
newnp->rcv_flowinfo = ip6_flowinfo(ipv6_hdr(skb));
if (np->repflow)
newnp->flow_label = ip6_flowlabel(ipv6_hdr(skb));
/*
* No need to charge this sock to the relevant IPv6 refcnt debug socks count
* here, tcp_create_openreq_child now does this for us, see the comment in
* that function for the gory details. -acme
*/
/* It is tricky place. Until this moment IPv4 tcp
worked with IPv6 icsk.icsk_af_ops.
Sync it now.
*/
tcp_sync_mss(newsk, inet_csk(newsk)->icsk_pmtu_cookie);
return newsk;
}
ireq = inet_rsk(req);
if (sk_acceptq_is_full(sk))
goto out_overflow;
if (!dst) {
dst = inet6_csk_route_req(sk, &fl6, req, IPPROTO_TCP);
if (!dst)
goto out;
}
newsk = tcp_create_openreq_child(sk, req, skb);
if (!newsk)
goto out_nonewsk;
/*
* No need to charge this sock to the relevant IPv6 refcnt debug socks
* count here, tcp_create_openreq_child now does this for us, see the
* comment in that function for the gory details. -acme
*/
newsk->sk_gso_type = SKB_GSO_TCPV6;
__ip6_dst_store(newsk, dst, NULL, NULL);
inet6_sk_rx_dst_set(newsk, skb);
newtcp6sk = (struct tcp6_sock *)newsk;
inet_sk(newsk)->pinet6 = &newtcp6sk->inet6;
newtp = tcp_sk(newsk);
newinet = inet_sk(newsk);
newnp = inet6_sk(newsk);
memcpy(newnp, np, sizeof(struct ipv6_pinfo));
newsk->sk_v6_daddr = ireq->ir_v6_rmt_addr;
newnp->saddr = ireq->ir_v6_loc_addr;
newsk->sk_v6_rcv_saddr = ireq->ir_v6_loc_addr;
newsk->sk_bound_dev_if = ireq->ir_iif;
/* Now IPv6 options...
First: no IPv4 options.
*/
newinet->inet_opt = NULL;
newnp->ipv6_ac_list = NULL;
newnp->ipv6_fl_list = NULL;
/* Clone RX bits */
newnp->rxopt.all = np->rxopt.all;
newnp->pktoptions = NULL;
newnp->opt = NULL;
newnp->mcast_oif = tcp_v6_iif(skb);
newnp->mcast_hops = ipv6_hdr(skb)->hop_limit;
newnp->rcv_flowinfo = ip6_flowinfo(ipv6_hdr(skb));
if (np->repflow)
newnp->flow_label = ip6_flowlabel(ipv6_hdr(skb));
/* Clone native IPv6 options from listening socket (if any)
Yes, keeping reference count would be much more clever,
but we make one more one thing there: reattach optmem
to newsk.
*/
if (np->opt)
newnp->opt = ipv6_dup_options(newsk, np->opt);
inet_csk(newsk)->icsk_ext_hdr_len = 0;
if (newnp->opt)
inet_csk(newsk)->icsk_ext_hdr_len = (newnp->opt->opt_nflen +
newnp->opt->opt_flen);
tcp_ca_openreq_child(newsk, dst);
tcp_sync_mss(newsk, dst_mtu(dst));
newtp->advmss = dst_metric_advmss(dst);
if (tcp_sk(sk)->rx_opt.user_mss &&
tcp_sk(sk)->rx_opt.user_mss < newtp->advmss)
newtp->advmss = tcp_sk(sk)->rx_opt.user_mss;
tcp_initialize_rcv_mss(newsk);
newinet->inet_daddr = newinet->inet_saddr = LOOPBACK4_IPV6;
newinet->inet_rcv_saddr = LOOPBACK4_IPV6;
#ifdef CONFIG_TCP_MD5SIG
/* Copy over the MD5 key from the original socket */
key = tcp_v6_md5_do_lookup(sk, &newsk->sk_v6_daddr);
if (key) {
/* We're using one, so create a matching key
* on the newsk structure. If we fail to get
* memory, then we end up not copying the key
* across. Shucks.
*/
tcp_md5_do_add(newsk, (union tcp_md5_addr *)&newsk->sk_v6_daddr,
AF_INET6, key->key, key->keylen,
sk_gfp_atomic(sk, GFP_ATOMIC));
}
#endif
if (__inet_inherit_port(sk, newsk) < 0) {
inet_csk_prepare_forced_close(newsk);
tcp_done(newsk);
goto out;
}
*own_req = inet_ehash_nolisten(newsk, req_to_sk(req_unhash));
if (*own_req) {
tcp_move_syn(newtp, req);
/* Clone pktoptions received with SYN, if we own the req */
if (ireq->pktopts) {
newnp->pktoptions = skb_clone(ireq->pktopts,
sk_gfp_atomic(sk, GFP_ATOMIC));
consume_skb(ireq->pktopts);
ireq->pktopts = NULL;
if (newnp->pktoptions)
skb_set_owner_r(newnp->pktoptions, newsk);
}
}
return newsk;
out_overflow:
NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_LISTENOVERFLOWS);
out_nonewsk:
dst_release(dst);
out:
NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_LISTENDROPS);
return NULL;
} | 898 | True | 1 |
||
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Use After Free | Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. |
The use of previously-freed memory can have any number of adverse consequences, ranging from the corruption of valid data to the execution of arbitrary code, depending on the instantiation and timing of the flaw. The simplest way data corruption may occur involves the system's reuse of the freed memory. Use-after-free errors have two common and sometimes overlapping causes:
Error conditions and other exceptional circumstances.
Confusion over which part of the program is responsible for freeing the memory.
In this scenario, the memory in question is allocated to another pointer validly at some point after it has been freed. The original pointer to the freed memory is used again and points to somewhere within the new allocation. As the data is changed, it corrupts the validly used memory; this induces undefined behavior in the process.
If the newly allocated data chances to hold a class, in C++ for example, various function pointers may be scattered within the heap data. If one of these function pointers is overwritten with an address to valid shellcode, execution of arbitrary code can be achieved.
| https://cwe.mitre.org/data/definitions/416.html | 0 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | tcp_v6_syn_recv_sock | tcp_v6_syn_recv_sock( const struct sock * sk , struct sk_buff * skb , struct request_sock * req , struct dst_entry * dst , struct request_sock * req_unhash , bool * own_req) | ['sk', 'skb', 'req', 'dst', 'req_unhash', 'own_req'] | static struct sock *tcp_v6_syn_recv_sock(const struct sock *sk, struct sk_buff *skb,
struct request_sock *req,
struct dst_entry *dst,
struct request_sock *req_unhash,
bool *own_req)
{
struct inet_request_sock *ireq;
struct ipv6_pinfo *newnp;
const struct ipv6_pinfo *np = inet6_sk(sk);
struct tcp6_sock *newtcp6sk;
struct inet_sock *newinet;
struct tcp_sock *newtp;
struct sock *newsk;
#ifdef CONFIG_TCP_MD5SIG
struct tcp_md5sig_key *key;
#endif
struct flowi6 fl6;
if (skb->protocol == htons(ETH_P_IP)) {
/*
* v6 mapped
*/
newsk = tcp_v4_syn_recv_sock(sk, skb, req, dst,
req_unhash, own_req);
if (!newsk)
return NULL;
newtcp6sk = (struct tcp6_sock *)newsk;
inet_sk(newsk)->pinet6 = &newtcp6sk->inet6;
newinet = inet_sk(newsk);
newnp = inet6_sk(newsk);
newtp = tcp_sk(newsk);
memcpy(newnp, np, sizeof(struct ipv6_pinfo));
newnp->saddr = newsk->sk_v6_rcv_saddr;
inet_csk(newsk)->icsk_af_ops = &ipv6_mapped;
newsk->sk_backlog_rcv = tcp_v4_do_rcv;
#ifdef CONFIG_TCP_MD5SIG
newtp->af_specific = &tcp_sock_ipv6_mapped_specific;
#endif
newnp->ipv6_ac_list = NULL;
newnp->ipv6_fl_list = NULL;
newnp->pktoptions = NULL;
newnp->opt = NULL;
newnp->mcast_oif = tcp_v6_iif(skb);
newnp->mcast_hops = ipv6_hdr(skb)->hop_limit;
newnp->rcv_flowinfo = ip6_flowinfo(ipv6_hdr(skb));
if (np->repflow)
newnp->flow_label = ip6_flowlabel(ipv6_hdr(skb));
/*
* No need to charge this sock to the relevant IPv6 refcnt debug socks count
* here, tcp_create_openreq_child now does this for us, see the comment in
* that function for the gory details. -acme
*/
/* It is tricky place. Until this moment IPv4 tcp
worked with IPv6 icsk.icsk_af_ops.
Sync it now.
*/
tcp_sync_mss(newsk, inet_csk(newsk)->icsk_pmtu_cookie);
return newsk;
}
ireq = inet_rsk(req);
if (sk_acceptq_is_full(sk))
goto out_overflow;
if (!dst) {
dst = inet6_csk_route_req(sk, &fl6, req, IPPROTO_TCP);
if (!dst)
goto out;
}
newsk = tcp_create_openreq_child(sk, req, skb);
if (!newsk)
goto out_nonewsk;
/*
* No need to charge this sock to the relevant IPv6 refcnt debug socks
* count here, tcp_create_openreq_child now does this for us, see the
* comment in that function for the gory details. -acme
*/
newsk->sk_gso_type = SKB_GSO_TCPV6;
__ip6_dst_store(newsk, dst, NULL, NULL);
inet6_sk_rx_dst_set(newsk, skb);
newtcp6sk = (struct tcp6_sock *)newsk;
inet_sk(newsk)->pinet6 = &newtcp6sk->inet6;
newtp = tcp_sk(newsk);
newinet = inet_sk(newsk);
newnp = inet6_sk(newsk);
memcpy(newnp, np, sizeof(struct ipv6_pinfo));
newsk->sk_v6_daddr = ireq->ir_v6_rmt_addr;
newnp->saddr = ireq->ir_v6_loc_addr;
newsk->sk_v6_rcv_saddr = ireq->ir_v6_loc_addr;
newsk->sk_bound_dev_if = ireq->ir_iif;
/* Now IPv6 options...
First: no IPv4 options.
*/
newinet->inet_opt = NULL;
newnp->ipv6_ac_list = NULL;
newnp->ipv6_fl_list = NULL;
/* Clone RX bits */
newnp->rxopt.all = np->rxopt.all;
newnp->pktoptions = NULL;
newnp->opt = NULL;
newnp->mcast_oif = tcp_v6_iif(skb);
newnp->mcast_hops = ipv6_hdr(skb)->hop_limit;
newnp->rcv_flowinfo = ip6_flowinfo(ipv6_hdr(skb));
if (np->repflow)
newnp->flow_label = ip6_flowlabel(ipv6_hdr(skb));
/* Clone native IPv6 options from listening socket (if any)
Yes, keeping reference count would be much more clever,
but we make one more one thing there: reattach optmem
to newsk.
*/
if (np->opt)
newnp->opt = ipv6_dup_options(newsk, np->opt);
inet_csk(newsk)->icsk_ext_hdr_len = 0;
if (newnp->opt)
inet_csk(newsk)->icsk_ext_hdr_len = (newnp->opt->opt_nflen +
newnp->opt->opt_flen);
tcp_ca_openreq_child(newsk, dst);
tcp_sync_mss(newsk, dst_mtu(dst));
newtp->advmss = dst_metric_advmss(dst);
if (tcp_sk(sk)->rx_opt.user_mss &&
tcp_sk(sk)->rx_opt.user_mss < newtp->advmss)
newtp->advmss = tcp_sk(sk)->rx_opt.user_mss;
tcp_initialize_rcv_mss(newsk);
newinet->inet_daddr = newinet->inet_saddr = LOOPBACK4_IPV6;
newinet->inet_rcv_saddr = LOOPBACK4_IPV6;
#ifdef CONFIG_TCP_MD5SIG
/* Copy over the MD5 key from the original socket */
key = tcp_v6_md5_do_lookup(sk, &newsk->sk_v6_daddr);
if (key) {
/* We're using one, so create a matching key
* on the newsk structure. If we fail to get
* memory, then we end up not copying the key
* across. Shucks.
*/
tcp_md5_do_add(newsk, (union tcp_md5_addr *)&newsk->sk_v6_daddr,
AF_INET6, key->key, key->keylen,
sk_gfp_atomic(sk, GFP_ATOMIC));
}
#endif
if (__inet_inherit_port(sk, newsk) < 0) {
inet_csk_prepare_forced_close(newsk);
tcp_done(newsk);
goto out;
}
*own_req = inet_ehash_nolisten(newsk, req_to_sk(req_unhash));
if (*own_req) {
tcp_move_syn(newtp, req);
/* Clone pktoptions received with SYN, if we own the req */
if (ireq->pktopts) {
newnp->pktoptions = skb_clone(ireq->pktopts,
sk_gfp_atomic(sk, GFP_ATOMIC));
consume_skb(ireq->pktopts);
ireq->pktopts = NULL;
if (newnp->pktoptions)
skb_set_owner_r(newnp->pktoptions, newsk);
}
}
return newsk;
out_overflow:
NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_LISTENOVERFLOWS);
out_nonewsk:
dst_release(dst);
out:
NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_LISTENDROPS);
return NULL;
} | 898 | True | 1 |
|
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | udpv6_sendmsg | udpv6_sendmsg( struct sock * sk , struct msghdr * msg , size_t len) | ['sk', 'msg', 'len'] | int udpv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
{
struct ipv6_txoptions opt_space;
struct udp_sock *up = udp_sk(sk);
struct inet_sock *inet = inet_sk(sk);
struct ipv6_pinfo *np = inet6_sk(sk);
DECLARE_SOCKADDR(struct sockaddr_in6 *, sin6, msg->msg_name);
struct in6_addr *daddr, *final_p, final;
struct ipv6_txoptions *opt = NULL;
struct ip6_flowlabel *flowlabel = NULL;
struct flowi6 fl6;
struct dst_entry *dst;
int addr_len = msg->msg_namelen;
int ulen = len;
int hlimit = -1;
int tclass = -1;
int dontfrag = -1;
int corkreq = up->corkflag || msg->msg_flags&MSG_MORE;
int err;
int connected = 0;
int is_udplite = IS_UDPLITE(sk);
int (*getfrag)(void *, char *, int, int, int, struct sk_buff *);
/* destination address check */
if (sin6) {
if (addr_len < offsetof(struct sockaddr, sa_data))
return -EINVAL;
switch (sin6->sin6_family) {
case AF_INET6:
if (addr_len < SIN6_LEN_RFC2133)
return -EINVAL;
daddr = &sin6->sin6_addr;
break;
case AF_INET:
goto do_udp_sendmsg;
case AF_UNSPEC:
msg->msg_name = sin6 = NULL;
msg->msg_namelen = addr_len = 0;
daddr = NULL;
break;
default:
return -EINVAL;
}
} else if (!up->pending) {
if (sk->sk_state != TCP_ESTABLISHED)
return -EDESTADDRREQ;
daddr = &sk->sk_v6_daddr;
} else
daddr = NULL;
if (daddr) {
if (ipv6_addr_v4mapped(daddr)) {
struct sockaddr_in sin;
sin.sin_family = AF_INET;
sin.sin_port = sin6 ? sin6->sin6_port : inet->inet_dport;
sin.sin_addr.s_addr = daddr->s6_addr32[3];
msg->msg_name = &sin;
msg->msg_namelen = sizeof(sin);
do_udp_sendmsg:
if (__ipv6_only_sock(sk))
return -ENETUNREACH;
return udp_sendmsg(sk, msg, len);
}
}
if (up->pending == AF_INET)
return udp_sendmsg(sk, msg, len);
/* Rough check on arithmetic overflow,
better check is made in ip6_append_data().
*/
if (len > INT_MAX - sizeof(struct udphdr))
return -EMSGSIZE;
getfrag = is_udplite ? udplite_getfrag : ip_generic_getfrag;
if (up->pending) {
/*
* There are pending frames.
* The socket lock must be held while it's corked.
*/
lock_sock(sk);
if (likely(up->pending)) {
if (unlikely(up->pending != AF_INET6)) {
release_sock(sk);
return -EAFNOSUPPORT;
}
dst = NULL;
goto do_append_data;
}
release_sock(sk);
}
ulen += sizeof(struct udphdr);
memset(&fl6, 0, sizeof(fl6));
if (sin6) {
if (sin6->sin6_port == 0)
return -EINVAL;
fl6.fl6_dport = sin6->sin6_port;
daddr = &sin6->sin6_addr;
if (np->sndflow) {
fl6.flowlabel = sin6->sin6_flowinfo&IPV6_FLOWINFO_MASK;
if (fl6.flowlabel&IPV6_FLOWLABEL_MASK) {
flowlabel = fl6_sock_lookup(sk, fl6.flowlabel);
if (!flowlabel)
return -EINVAL;
}
}
/*
* Otherwise it will be difficult to maintain
* sk->sk_dst_cache.
*/
if (sk->sk_state == TCP_ESTABLISHED &&
ipv6_addr_equal(daddr, &sk->sk_v6_daddr))
daddr = &sk->sk_v6_daddr;
if (addr_len >= sizeof(struct sockaddr_in6) &&
sin6->sin6_scope_id &&
__ipv6_addr_needs_scope_id(__ipv6_addr_type(daddr)))
fl6.flowi6_oif = sin6->sin6_scope_id;
} else {
if (sk->sk_state != TCP_ESTABLISHED)
return -EDESTADDRREQ;
fl6.fl6_dport = inet->inet_dport;
daddr = &sk->sk_v6_daddr;
fl6.flowlabel = np->flow_label;
connected = 1;
}
if (!fl6.flowi6_oif)
fl6.flowi6_oif = sk->sk_bound_dev_if;
if (!fl6.flowi6_oif)
fl6.flowi6_oif = np->sticky_pktinfo.ipi6_ifindex;
fl6.flowi6_mark = sk->sk_mark;
if (msg->msg_controllen) {
opt = &opt_space;
memset(opt, 0, sizeof(struct ipv6_txoptions));
opt->tot_len = sizeof(*opt);
err = ip6_datagram_send_ctl(sock_net(sk), sk, msg, &fl6, opt,
&hlimit, &tclass, &dontfrag);
if (err < 0) {
fl6_sock_release(flowlabel);
return err;
}
if ((fl6.flowlabel&IPV6_FLOWLABEL_MASK) && !flowlabel) {
flowlabel = fl6_sock_lookup(sk, fl6.flowlabel);
if (!flowlabel)
return -EINVAL;
}
if (!(opt->opt_nflen|opt->opt_flen))
opt = NULL;
connected = 0;
}
if (!opt)
opt = np->opt;
if (flowlabel)
opt = fl6_merge_options(&opt_space, flowlabel, opt);
opt = ipv6_fixup_options(&opt_space, opt);
fl6.flowi6_proto = sk->sk_protocol;
if (!ipv6_addr_any(daddr))
fl6.daddr = *daddr;
else
fl6.daddr.s6_addr[15] = 0x1; /* :: means loopback (BSD'ism) */
if (ipv6_addr_any(&fl6.saddr) && !ipv6_addr_any(&np->saddr))
fl6.saddr = np->saddr;
fl6.fl6_sport = inet->inet_sport;
final_p = fl6_update_dst(&fl6, opt, &final);
if (final_p)
connected = 0;
if (!fl6.flowi6_oif && ipv6_addr_is_multicast(&fl6.daddr)) {
fl6.flowi6_oif = np->mcast_oif;
connected = 0;
} else if (!fl6.flowi6_oif)
fl6.flowi6_oif = np->ucast_oif;
security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
dst = ip6_sk_dst_lookup_flow(sk, &fl6, final_p);
if (IS_ERR(dst)) {
err = PTR_ERR(dst);
dst = NULL;
goto out;
}
if (hlimit < 0)
hlimit = ip6_sk_dst_hoplimit(np, &fl6, dst);
if (tclass < 0)
tclass = np->tclass;
if (msg->msg_flags&MSG_CONFIRM)
goto do_confirm;
back_from_confirm:
/* Lockless fast path for the non-corking case */
if (!corkreq) {
struct sk_buff *skb;
skb = ip6_make_skb(sk, getfrag, msg, ulen,
sizeof(struct udphdr), hlimit, tclass, opt,
&fl6, (struct rt6_info *)dst,
msg->msg_flags, dontfrag);
err = PTR_ERR(skb);
if (!IS_ERR_OR_NULL(skb))
err = udp_v6_send_skb(skb, &fl6);
goto release_dst;
}
lock_sock(sk);
if (unlikely(up->pending)) {
/* The socket is already corked while preparing it. */
/* ... which is an evident application bug. --ANK */
release_sock(sk);
net_dbg_ratelimited("udp cork app bug 2\n");
err = -EINVAL;
goto out;
}
up->pending = AF_INET6;
do_append_data:
if (dontfrag < 0)
dontfrag = np->dontfrag;
up->len += ulen;
err = ip6_append_data(sk, getfrag, msg, ulen,
sizeof(struct udphdr), hlimit, tclass, opt, &fl6,
(struct rt6_info *)dst,
corkreq ? msg->msg_flags|MSG_MORE : msg->msg_flags, dontfrag);
if (err)
udp_v6_flush_pending_frames(sk);
else if (!corkreq)
err = udp_v6_push_pending_frames(sk);
else if (unlikely(skb_queue_empty(&sk->sk_write_queue)))
up->pending = 0;
if (err > 0)
err = np->recverr ? net_xmit_errno(err) : 0;
release_sock(sk);
release_dst:
if (dst) {
if (connected) {
ip6_dst_store(sk, dst,
ipv6_addr_equal(&fl6.daddr, &sk->sk_v6_daddr) ?
&sk->sk_v6_daddr : NULL,
#ifdef CONFIG_IPV6_SUBTREES
ipv6_addr_equal(&fl6.saddr, &np->saddr) ?
&np->saddr :
#endif
NULL);
} else {
dst_release(dst);
}
dst = NULL;
}
out:
dst_release(dst);
fl6_sock_release(flowlabel);
if (!err)
return len;
/*
* ENOBUFS = no kernel mem, SOCK_NOSPACE = no sndbuf space. Reporting
* ENOBUFS might not be good (it's not tunable per se), but otherwise
* we don't have a good statistic (IpOutDiscards but it can be too many
* things). We could add another new stat but at least for now that
* seems like overkill.
*/
if (err == -ENOBUFS || test_bit(SOCK_NOSPACE, &sk->sk_socket->flags)) {
UDP6_INC_STATS_USER(sock_net(sk),
UDP_MIB_SNDBUFERRORS, is_udplite);
}
return err;
do_confirm:
dst_confirm(dst);
if (!(msg->msg_flags&MSG_PROBE) || len)
goto back_from_confirm;
err = 0;
goto out;
} | 1545 | True | 1 |
||
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Use After Free | Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. |
The use of previously-freed memory can have any number of adverse consequences, ranging from the corruption of valid data to the execution of arbitrary code, depending on the instantiation and timing of the flaw. The simplest way data corruption may occur involves the system's reuse of the freed memory. Use-after-free errors have two common and sometimes overlapping causes:
Error conditions and other exceptional circumstances.
Confusion over which part of the program is responsible for freeing the memory.
In this scenario, the memory in question is allocated to another pointer validly at some point after it has been freed. The original pointer to the freed memory is used again and points to somewhere within the new allocation. As the data is changed, it corrupts the validly used memory; this induces undefined behavior in the process.
If the newly allocated data chances to hold a class, in C++ for example, various function pointers may be scattered within the heap data. If one of these function pointers is overwritten with an address to valid shellcode, execution of arbitrary code can be achieved.
| https://cwe.mitre.org/data/definitions/416.html | 0 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | udpv6_sendmsg | udpv6_sendmsg( struct sock * sk , struct msghdr * msg , size_t len) | ['sk', 'msg', 'len'] | int udpv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
{
struct ipv6_txoptions opt_space;
struct udp_sock *up = udp_sk(sk);
struct inet_sock *inet = inet_sk(sk);
struct ipv6_pinfo *np = inet6_sk(sk);
DECLARE_SOCKADDR(struct sockaddr_in6 *, sin6, msg->msg_name);
struct in6_addr *daddr, *final_p, final;
struct ipv6_txoptions *opt = NULL;
struct ip6_flowlabel *flowlabel = NULL;
struct flowi6 fl6;
struct dst_entry *dst;
int addr_len = msg->msg_namelen;
int ulen = len;
int hlimit = -1;
int tclass = -1;
int dontfrag = -1;
int corkreq = up->corkflag || msg->msg_flags&MSG_MORE;
int err;
int connected = 0;
int is_udplite = IS_UDPLITE(sk);
int (*getfrag)(void *, char *, int, int, int, struct sk_buff *);
/* destination address check */
if (sin6) {
if (addr_len < offsetof(struct sockaddr, sa_data))
return -EINVAL;
switch (sin6->sin6_family) {
case AF_INET6:
if (addr_len < SIN6_LEN_RFC2133)
return -EINVAL;
daddr = &sin6->sin6_addr;
break;
case AF_INET:
goto do_udp_sendmsg;
case AF_UNSPEC:
msg->msg_name = sin6 = NULL;
msg->msg_namelen = addr_len = 0;
daddr = NULL;
break;
default:
return -EINVAL;
}
} else if (!up->pending) {
if (sk->sk_state != TCP_ESTABLISHED)
return -EDESTADDRREQ;
daddr = &sk->sk_v6_daddr;
} else
daddr = NULL;
if (daddr) {
if (ipv6_addr_v4mapped(daddr)) {
struct sockaddr_in sin;
sin.sin_family = AF_INET;
sin.sin_port = sin6 ? sin6->sin6_port : inet->inet_dport;
sin.sin_addr.s_addr = daddr->s6_addr32[3];
msg->msg_name = &sin;
msg->msg_namelen = sizeof(sin);
do_udp_sendmsg:
if (__ipv6_only_sock(sk))
return -ENETUNREACH;
return udp_sendmsg(sk, msg, len);
}
}
if (up->pending == AF_INET)
return udp_sendmsg(sk, msg, len);
/* Rough check on arithmetic overflow,
better check is made in ip6_append_data().
*/
if (len > INT_MAX - sizeof(struct udphdr))
return -EMSGSIZE;
getfrag = is_udplite ? udplite_getfrag : ip_generic_getfrag;
if (up->pending) {
/*
* There are pending frames.
* The socket lock must be held while it's corked.
*/
lock_sock(sk);
if (likely(up->pending)) {
if (unlikely(up->pending != AF_INET6)) {
release_sock(sk);
return -EAFNOSUPPORT;
}
dst = NULL;
goto do_append_data;
}
release_sock(sk);
}
ulen += sizeof(struct udphdr);
memset(&fl6, 0, sizeof(fl6));
if (sin6) {
if (sin6->sin6_port == 0)
return -EINVAL;
fl6.fl6_dport = sin6->sin6_port;
daddr = &sin6->sin6_addr;
if (np->sndflow) {
fl6.flowlabel = sin6->sin6_flowinfo&IPV6_FLOWINFO_MASK;
if (fl6.flowlabel&IPV6_FLOWLABEL_MASK) {
flowlabel = fl6_sock_lookup(sk, fl6.flowlabel);
if (!flowlabel)
return -EINVAL;
}
}
/*
* Otherwise it will be difficult to maintain
* sk->sk_dst_cache.
*/
if (sk->sk_state == TCP_ESTABLISHED &&
ipv6_addr_equal(daddr, &sk->sk_v6_daddr))
daddr = &sk->sk_v6_daddr;
if (addr_len >= sizeof(struct sockaddr_in6) &&
sin6->sin6_scope_id &&
__ipv6_addr_needs_scope_id(__ipv6_addr_type(daddr)))
fl6.flowi6_oif = sin6->sin6_scope_id;
} else {
if (sk->sk_state != TCP_ESTABLISHED)
return -EDESTADDRREQ;
fl6.fl6_dport = inet->inet_dport;
daddr = &sk->sk_v6_daddr;
fl6.flowlabel = np->flow_label;
connected = 1;
}
if (!fl6.flowi6_oif)
fl6.flowi6_oif = sk->sk_bound_dev_if;
if (!fl6.flowi6_oif)
fl6.flowi6_oif = np->sticky_pktinfo.ipi6_ifindex;
fl6.flowi6_mark = sk->sk_mark;
if (msg->msg_controllen) {
opt = &opt_space;
memset(opt, 0, sizeof(struct ipv6_txoptions));
opt->tot_len = sizeof(*opt);
err = ip6_datagram_send_ctl(sock_net(sk), sk, msg, &fl6, opt,
&hlimit, &tclass, &dontfrag);
if (err < 0) {
fl6_sock_release(flowlabel);
return err;
}
if ((fl6.flowlabel&IPV6_FLOWLABEL_MASK) && !flowlabel) {
flowlabel = fl6_sock_lookup(sk, fl6.flowlabel);
if (!flowlabel)
return -EINVAL;
}
if (!(opt->opt_nflen|opt->opt_flen))
opt = NULL;
connected = 0;
}
if (!opt)
opt = np->opt;
if (flowlabel)
opt = fl6_merge_options(&opt_space, flowlabel, opt);
opt = ipv6_fixup_options(&opt_space, opt);
fl6.flowi6_proto = sk->sk_protocol;
if (!ipv6_addr_any(daddr))
fl6.daddr = *daddr;
else
fl6.daddr.s6_addr[15] = 0x1; /* :: means loopback (BSD'ism) */
if (ipv6_addr_any(&fl6.saddr) && !ipv6_addr_any(&np->saddr))
fl6.saddr = np->saddr;
fl6.fl6_sport = inet->inet_sport;
final_p = fl6_update_dst(&fl6, opt, &final);
if (final_p)
connected = 0;
if (!fl6.flowi6_oif && ipv6_addr_is_multicast(&fl6.daddr)) {
fl6.flowi6_oif = np->mcast_oif;
connected = 0;
} else if (!fl6.flowi6_oif)
fl6.flowi6_oif = np->ucast_oif;
security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
dst = ip6_sk_dst_lookup_flow(sk, &fl6, final_p);
if (IS_ERR(dst)) {
err = PTR_ERR(dst);
dst = NULL;
goto out;
}
if (hlimit < 0)
hlimit = ip6_sk_dst_hoplimit(np, &fl6, dst);
if (tclass < 0)
tclass = np->tclass;
if (msg->msg_flags&MSG_CONFIRM)
goto do_confirm;
back_from_confirm:
/* Lockless fast path for the non-corking case */
if (!corkreq) {
struct sk_buff *skb;
skb = ip6_make_skb(sk, getfrag, msg, ulen,
sizeof(struct udphdr), hlimit, tclass, opt,
&fl6, (struct rt6_info *)dst,
msg->msg_flags, dontfrag);
err = PTR_ERR(skb);
if (!IS_ERR_OR_NULL(skb))
err = udp_v6_send_skb(skb, &fl6);
goto release_dst;
}
lock_sock(sk);
if (unlikely(up->pending)) {
/* The socket is already corked while preparing it. */
/* ... which is an evident application bug. --ANK */
release_sock(sk);
net_dbg_ratelimited("udp cork app bug 2\n");
err = -EINVAL;
goto out;
}
up->pending = AF_INET6;
do_append_data:
if (dontfrag < 0)
dontfrag = np->dontfrag;
up->len += ulen;
err = ip6_append_data(sk, getfrag, msg, ulen,
sizeof(struct udphdr), hlimit, tclass, opt, &fl6,
(struct rt6_info *)dst,
corkreq ? msg->msg_flags|MSG_MORE : msg->msg_flags, dontfrag);
if (err)
udp_v6_flush_pending_frames(sk);
else if (!corkreq)
err = udp_v6_push_pending_frames(sk);
else if (unlikely(skb_queue_empty(&sk->sk_write_queue)))
up->pending = 0;
if (err > 0)
err = np->recverr ? net_xmit_errno(err) : 0;
release_sock(sk);
release_dst:
if (dst) {
if (connected) {
ip6_dst_store(sk, dst,
ipv6_addr_equal(&fl6.daddr, &sk->sk_v6_daddr) ?
&sk->sk_v6_daddr : NULL,
#ifdef CONFIG_IPV6_SUBTREES
ipv6_addr_equal(&fl6.saddr, &np->saddr) ?
&np->saddr :
#endif
NULL);
} else {
dst_release(dst);
}
dst = NULL;
}
out:
dst_release(dst);
fl6_sock_release(flowlabel);
if (!err)
return len;
/*
* ENOBUFS = no kernel mem, SOCK_NOSPACE = no sndbuf space. Reporting
* ENOBUFS might not be good (it's not tunable per se), but otherwise
* we don't have a good statistic (IpOutDiscards but it can be too many
* things). We could add another new stat but at least for now that
* seems like overkill.
*/
if (err == -ENOBUFS || test_bit(SOCK_NOSPACE, &sk->sk_socket->flags)) {
UDP6_INC_STATS_USER(sock_net(sk),
UDP_MIB_SNDBUFERRORS, is_udplite);
}
return err;
do_confirm:
dst_confirm(dst);
if (!(msg->msg_flags&MSG_PROBE) || len)
goto back_from_confirm;
err = 0;
goto out;
} | 1545 | True | 1 |
|
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | l2tp_ip6_sendmsg | l2tp_ip6_sendmsg( struct sock * sk , struct msghdr * msg , size_t len) | ['sk', 'msg', 'len'] | static int l2tp_ip6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
{
struct ipv6_txoptions opt_space;
DECLARE_SOCKADDR(struct sockaddr_l2tpip6 *, lsa, msg->msg_name);
struct in6_addr *daddr, *final_p, final;
struct ipv6_pinfo *np = inet6_sk(sk);
struct ipv6_txoptions *opt = NULL;
struct ip6_flowlabel *flowlabel = NULL;
struct dst_entry *dst = NULL;
struct flowi6 fl6;
int addr_len = msg->msg_namelen;
int hlimit = -1;
int tclass = -1;
int dontfrag = -1;
int transhdrlen = 4; /* zero session-id */
int ulen = len + transhdrlen;
int err;
/* Rough check on arithmetic overflow,
better check is made in ip6_append_data().
*/
if (len > INT_MAX)
return -EMSGSIZE;
/* Mirror BSD error message compatibility */
if (msg->msg_flags & MSG_OOB)
return -EOPNOTSUPP;
/*
* Get and verify the address.
*/
memset(&fl6, 0, sizeof(fl6));
fl6.flowi6_mark = sk->sk_mark;
if (lsa) {
if (addr_len < SIN6_LEN_RFC2133)
return -EINVAL;
if (lsa->l2tp_family && lsa->l2tp_family != AF_INET6)
return -EAFNOSUPPORT;
daddr = &lsa->l2tp_addr;
if (np->sndflow) {
fl6.flowlabel = lsa->l2tp_flowinfo & IPV6_FLOWINFO_MASK;
if (fl6.flowlabel&IPV6_FLOWLABEL_MASK) {
flowlabel = fl6_sock_lookup(sk, fl6.flowlabel);
if (flowlabel == NULL)
return -EINVAL;
}
}
/*
* Otherwise it will be difficult to maintain
* sk->sk_dst_cache.
*/
if (sk->sk_state == TCP_ESTABLISHED &&
ipv6_addr_equal(daddr, &sk->sk_v6_daddr))
daddr = &sk->sk_v6_daddr;
if (addr_len >= sizeof(struct sockaddr_in6) &&
lsa->l2tp_scope_id &&
ipv6_addr_type(daddr) & IPV6_ADDR_LINKLOCAL)
fl6.flowi6_oif = lsa->l2tp_scope_id;
} else {
if (sk->sk_state != TCP_ESTABLISHED)
return -EDESTADDRREQ;
daddr = &sk->sk_v6_daddr;
fl6.flowlabel = np->flow_label;
}
if (fl6.flowi6_oif == 0)
fl6.flowi6_oif = sk->sk_bound_dev_if;
if (msg->msg_controllen) {
opt = &opt_space;
memset(opt, 0, sizeof(struct ipv6_txoptions));
opt->tot_len = sizeof(struct ipv6_txoptions);
err = ip6_datagram_send_ctl(sock_net(sk), sk, msg, &fl6, opt,
&hlimit, &tclass, &dontfrag);
if (err < 0) {
fl6_sock_release(flowlabel);
return err;
}
if ((fl6.flowlabel & IPV6_FLOWLABEL_MASK) && !flowlabel) {
flowlabel = fl6_sock_lookup(sk, fl6.flowlabel);
if (flowlabel == NULL)
return -EINVAL;
}
if (!(opt->opt_nflen|opt->opt_flen))
opt = NULL;
}
if (opt == NULL)
opt = np->opt;
if (flowlabel)
opt = fl6_merge_options(&opt_space, flowlabel, opt);
opt = ipv6_fixup_options(&opt_space, opt);
fl6.flowi6_proto = sk->sk_protocol;
if (!ipv6_addr_any(daddr))
fl6.daddr = *daddr;
else
fl6.daddr.s6_addr[15] = 0x1; /* :: means loopback (BSD'ism) */
if (ipv6_addr_any(&fl6.saddr) && !ipv6_addr_any(&np->saddr))
fl6.saddr = np->saddr;
final_p = fl6_update_dst(&fl6, opt, &final);
if (!fl6.flowi6_oif && ipv6_addr_is_multicast(&fl6.daddr))
fl6.flowi6_oif = np->mcast_oif;
else if (!fl6.flowi6_oif)
fl6.flowi6_oif = np->ucast_oif;
security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
dst = ip6_dst_lookup_flow(sk, &fl6, final_p);
if (IS_ERR(dst)) {
err = PTR_ERR(dst);
goto out;
}
if (hlimit < 0)
hlimit = ip6_sk_dst_hoplimit(np, &fl6, dst);
if (tclass < 0)
tclass = np->tclass;
if (dontfrag < 0)
dontfrag = np->dontfrag;
if (msg->msg_flags & MSG_CONFIRM)
goto do_confirm;
back_from_confirm:
lock_sock(sk);
err = ip6_append_data(sk, ip_generic_getfrag, msg,
ulen, transhdrlen, hlimit, tclass, opt,
&fl6, (struct rt6_info *)dst,
msg->msg_flags, dontfrag);
if (err)
ip6_flush_pending_frames(sk);
else if (!(msg->msg_flags & MSG_MORE))
err = l2tp_ip6_push_pending_frames(sk);
release_sock(sk);
done:
dst_release(dst);
out:
fl6_sock_release(flowlabel);
return err < 0 ? err : len;
do_confirm:
dst_confirm(dst);
if (!(msg->msg_flags & MSG_PROBE) || len)
goto back_from_confirm;
err = 0;
goto done;
} | 860 | True | 1 |
||
CVE-2016-3841 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.3 | HIGH | 1.3 | 5.9 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3', 'refsource': 'CONFIRM', 'tags': ['Release Notes']}, {'url': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://source.android.com/security/bulletin/2016-08-01.html', 'name': 'http://source.android.com/security/bulletin/2016-08-01.html', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/92227', 'name': '92227', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2695.html', 'name': 'RHSA-2016:2695', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}, {'lang': 'en', 'value': 'CWE-416'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.'}] | 2018-01-05T02:30Z | 2016-08-06T20:59Z | Use After Free | Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. |
The use of previously-freed memory can have any number of adverse consequences, ranging from the corruption of valid data to the execution of arbitrary code, depending on the instantiation and timing of the flaw. The simplest way data corruption may occur involves the system's reuse of the freed memory. Use-after-free errors have two common and sometimes overlapping causes:
Error conditions and other exceptional circumstances.
Confusion over which part of the program is responsible for freeing the memory.
In this scenario, the memory in question is allocated to another pointer validly at some point after it has been freed. The original pointer to the freed memory is used again and points to somewhere within the new allocation. As the data is changed, it corrupts the validly used memory; this induces undefined behavior in the process.
If the newly allocated data chances to hold a class, in C++ for example, various function pointers may be scattered within the heap data. If one of these function pointers is overwritten with an address to valid shellcode, execution of arbitrary code can be achieved.
| https://cwe.mitre.org/data/definitions/416.html | 0 | Eric Dumazet | 2015-11-29 19:37:57-08:00 | ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 45f6fad84cc305103b28d73482b344d7f5b76f39 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | l2tp_ip6_sendmsg | l2tp_ip6_sendmsg( struct sock * sk , struct msghdr * msg , size_t len) | ['sk', 'msg', 'len'] | static int l2tp_ip6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
{
struct ipv6_txoptions opt_space;
DECLARE_SOCKADDR(struct sockaddr_l2tpip6 *, lsa, msg->msg_name);
struct in6_addr *daddr, *final_p, final;
struct ipv6_pinfo *np = inet6_sk(sk);
struct ipv6_txoptions *opt = NULL;
struct ip6_flowlabel *flowlabel = NULL;
struct dst_entry *dst = NULL;
struct flowi6 fl6;
int addr_len = msg->msg_namelen;
int hlimit = -1;
int tclass = -1;
int dontfrag = -1;
int transhdrlen = 4; /* zero session-id */
int ulen = len + transhdrlen;
int err;
/* Rough check on arithmetic overflow,
better check is made in ip6_append_data().
*/
if (len > INT_MAX)
return -EMSGSIZE;
/* Mirror BSD error message compatibility */
if (msg->msg_flags & MSG_OOB)
return -EOPNOTSUPP;
/*
* Get and verify the address.
*/
memset(&fl6, 0, sizeof(fl6));
fl6.flowi6_mark = sk->sk_mark;
if (lsa) {
if (addr_len < SIN6_LEN_RFC2133)
return -EINVAL;
if (lsa->l2tp_family && lsa->l2tp_family != AF_INET6)
return -EAFNOSUPPORT;
daddr = &lsa->l2tp_addr;
if (np->sndflow) {
fl6.flowlabel = lsa->l2tp_flowinfo & IPV6_FLOWINFO_MASK;
if (fl6.flowlabel&IPV6_FLOWLABEL_MASK) {
flowlabel = fl6_sock_lookup(sk, fl6.flowlabel);
if (flowlabel == NULL)
return -EINVAL;
}
}
/*
* Otherwise it will be difficult to maintain
* sk->sk_dst_cache.
*/
if (sk->sk_state == TCP_ESTABLISHED &&
ipv6_addr_equal(daddr, &sk->sk_v6_daddr))
daddr = &sk->sk_v6_daddr;
if (addr_len >= sizeof(struct sockaddr_in6) &&
lsa->l2tp_scope_id &&
ipv6_addr_type(daddr) & IPV6_ADDR_LINKLOCAL)
fl6.flowi6_oif = lsa->l2tp_scope_id;
} else {
if (sk->sk_state != TCP_ESTABLISHED)
return -EDESTADDRREQ;
daddr = &sk->sk_v6_daddr;
fl6.flowlabel = np->flow_label;
}
if (fl6.flowi6_oif == 0)
fl6.flowi6_oif = sk->sk_bound_dev_if;
if (msg->msg_controllen) {
opt = &opt_space;
memset(opt, 0, sizeof(struct ipv6_txoptions));
opt->tot_len = sizeof(struct ipv6_txoptions);
err = ip6_datagram_send_ctl(sock_net(sk), sk, msg, &fl6, opt,
&hlimit, &tclass, &dontfrag);
if (err < 0) {
fl6_sock_release(flowlabel);
return err;
}
if ((fl6.flowlabel & IPV6_FLOWLABEL_MASK) && !flowlabel) {
flowlabel = fl6_sock_lookup(sk, fl6.flowlabel);
if (flowlabel == NULL)
return -EINVAL;
}
if (!(opt->opt_nflen|opt->opt_flen))
opt = NULL;
}
if (opt == NULL)
opt = np->opt;
if (flowlabel)
opt = fl6_merge_options(&opt_space, flowlabel, opt);
opt = ipv6_fixup_options(&opt_space, opt);
fl6.flowi6_proto = sk->sk_protocol;
if (!ipv6_addr_any(daddr))
fl6.daddr = *daddr;
else
fl6.daddr.s6_addr[15] = 0x1; /* :: means loopback (BSD'ism) */
if (ipv6_addr_any(&fl6.saddr) && !ipv6_addr_any(&np->saddr))
fl6.saddr = np->saddr;
final_p = fl6_update_dst(&fl6, opt, &final);
if (!fl6.flowi6_oif && ipv6_addr_is_multicast(&fl6.daddr))
fl6.flowi6_oif = np->mcast_oif;
else if (!fl6.flowi6_oif)
fl6.flowi6_oif = np->ucast_oif;
security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
dst = ip6_dst_lookup_flow(sk, &fl6, final_p);
if (IS_ERR(dst)) {
err = PTR_ERR(dst);
goto out;
}
if (hlimit < 0)
hlimit = ip6_sk_dst_hoplimit(np, &fl6, dst);
if (tclass < 0)
tclass = np->tclass;
if (dontfrag < 0)
dontfrag = np->dontfrag;
if (msg->msg_flags & MSG_CONFIRM)
goto do_confirm;
back_from_confirm:
lock_sock(sk);
err = ip6_append_data(sk, ip_generic_getfrag, msg,
ulen, transhdrlen, hlimit, tclass, opt,
&fl6, (struct rt6_info *)dst,
msg->msg_flags, dontfrag);
if (err)
ip6_flush_pending_frames(sk);
else if (!(msg->msg_flags & MSG_MORE))
err = l2tp_ip6_push_pending_frames(sk);
release_sock(sk);
done:
dst_release(dst);
out:
fl6_sock_release(flowlabel);
return err < 0 ? err : len;
do_confirm:
dst_confirm(dst);
if (!(msg->msg_flags & MSG_PROBE) || len)
goto back_from_confirm;
err = 0;
goto done;
} | 860 | True | 1 |
|
CVE-2015-8660 | False | False | False | nan | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H | LOCAL | LOW | HIGH | NONE | UNCHANGED | HIGH | HIGH | HIGH | 6.7 | MEDIUM | 0.8 | 5.9 | True | [{'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=acff81ec2c79492b180fade3c2894425cd35a545', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=acff81ec2c79492b180fade3c2894425cd35a545', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/acff81ec2c79492b180fade3c2894425cd35a545', 'name': 'https://github.com/torvalds/linux/commit/acff81ec2c79492b180fade3c2894425cd35a545', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1291329', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1291329', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.openwall.com/lists/oss-security/2015/12/23/5', 'name': '[oss-security] 20151223 CVE request -- linux kernel: overlay: fix permission checking for setattr', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-1532.html', 'name': 'RHSA-2016:1532', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-1541.html', 'name': 'RHSA-2016:1541', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-1539.html', 'name': 'RHSA-2016:1539', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html', 'name': 'http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html', 'name': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.securityfocus.com/bid/79671', 'name': '79671', 'refsource': 'BID', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00043.html', 'name': 'SUSE-SU-2016:0755', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00040.html', 'name': 'SUSE-SU-2016:0752', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00039.html', 'name': 'SUSE-SU-2016:0751', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.securitytracker.com/id/1034548', 'name': '1034548', 'refsource': 'SECTRACK', 'tags': []}, {'url': 'http://packetstormsecurity.com/files/135151/Ubuntu-14.04-LTS-15.10-overlayfs-Local-Root.html', 'name': 'http://packetstormsecurity.com/files/135151/Ubuntu-14.04-LTS-15.10-overlayfs-Local-Root.html', 'refsource': 'MISC', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2858-1', 'name': 'USN-2858-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2857-2', 'name': 'USN-2857-2', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2857-1', 'name': 'USN-2857-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2858-2', 'name': 'USN-2858-2', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'https://www.exploit-db.com/exploits/39166/', 'name': '39166', 'refsource': 'EXPLOIT-DB', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2858-3', 'name': 'USN-2858-3', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'https://www.exploit-db.com/exploits/40688/', 'name': '40688', 'refsource': 'EXPLOIT-DB', 'tags': []}, {'url': 'https://www.exploit-db.com/exploits/39230/', 'name': '39230', 'refsource': 'EXPLOIT-DB', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The ovl_setattr function in fs/overlayfs/inode.c in the Linux kernel through 4.3.3 attempts to merge distinct setattr operations, which allows local users to bypass intended access restrictions and modify the attributes of arbitrary overlay files via a crafted application.'}] | 2017-09-10T01:29Z | 2015-12-28T11:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Miklos Szeredi | 2015-12-04 19:18:48+01:00 | ovl: fix permission checking for setattr
[Al Viro] The bug is in being too enthusiastic about optimizing ->setattr()
away - instead of "copy verbatim with metadata" + "chmod/chown/utimes"
(with the former being always safe and the latter failing in case of
insufficient permissions) it tries to combine these two. Note that copyup
itself will have to do ->setattr() anyway; _that_ is where the elevated
capabilities are right. Having these two ->setattr() (one to set verbatim
copy of metadata, another to do what overlayfs ->setattr() had been asked
to do in the first place) combined is where it breaks.
Signed-off-by: Miklos Szeredi <[email protected]>
Cc: <[email protected]>
Signed-off-by: Al Viro <[email protected]> | acff81ec2c79492b180fade3c2894425cd35a545 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | ovl_setattr | ovl_setattr( struct dentry * dentry , struct iattr * attr) | ['dentry', 'attr'] | int ovl_setattr(struct dentry *dentry, struct iattr *attr)
{
int err;
struct dentry *upperdentry;
err = ovl_want_write(dentry);
if (err)
goto out;
upperdentry = ovl_dentry_upper(dentry);
if (upperdentry) {
mutex_lock(&upperdentry->d_inode->i_mutex);
err = notify_change(upperdentry, attr, NULL);
mutex_unlock(&upperdentry->d_inode->i_mutex);
} else {
err = ovl_copy_up_last(dentry, attr, false);
}
ovl_drop_write(dentry);
out:
return err;
} | 104 | True | 1 |
||
CVE-2015-8839 | False | False | False | False | AV:L/AC:M/Au:N/C:N/I:N/A:P | LOCAL | MEDIUM | NONE | NONE | NONE | PARTIAL | 1.9 | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H | LOCAL | HIGH | NONE | NONE | UNCHANGED | NONE | NONE | HIGH | 5.1 | MEDIUM | 1.4 | 3.6 | nan | [{'url': 'https://github.com/torvalds/linux/commit/ea3d7209ca01da209cda6f0dea8be9cc4b7a933b', 'name': 'https://github.com/torvalds/linux/commit/ea3d7209ca01da209cda6f0dea8be9cc4b7a933b', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ea3d7209ca01da209cda6f0dea8be9cc4b7a933b', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ea3d7209ca01da209cda6f0dea8be9cc4b7a933b', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2016/04/01/4', 'name': '[oss-security] 20160401 Re: ext4 data corruption due to punch hole races', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1323577', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1323577', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-3007-1', 'name': 'USN-3007-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-3005-1', 'name': 'USN-3005-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-3006-1', 'name': 'USN-3006-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/85798', 'name': '85798', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://www.securitytracker.com/id/1035455', 'name': '1035455', 'refsource': 'SECTRACK', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'https://access.redhat.com/errata/RHSA-2017:2669', 'name': 'RHSA-2017:2669', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'https://access.redhat.com/errata/RHSA-2017:2077', 'name': 'RHSA-2017:2077', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'https://access.redhat.com/errata/RHSA-2017:1842', 'name': 'RHSA-2017:1842', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html', 'name': '[debian-lts-announce] 20200609 [SECURITY] [DLA 2241-1] linux security update', 'refsource': 'MLIST', 'tags': ['Third Party Advisory']}, {'url': 'https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html', 'name': '[debian-lts-announce] 20200610 [SECURITY] [DLA 2241-2] linux security update', 'refsource': 'MLIST', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'CWE-362'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc7:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc6:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc5:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc4:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc3:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc2:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc1:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.4.221', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': "Multiple race conditions in the ext4 filesystem implementation in the Linux kernel before 4.5 allow local users to cause a denial of service (disk corruption) by writing to a page that is associated with a different user's file after unsynchronized hole punching and page-fault handling."}] | 2020-10-02T14:56Z | 2016-05-02T10:59Z | Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') | The program contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. |
This can have security implications when the expected synchronization is in security-critical code, such as recording whether a user is authenticated or modifying important state information that should not be influenced by an outsider.
A race condition occurs within concurrent environments, and is effectively a property of a code sequence. Depending on the context, a code sequence may be in the form of a function call, a small number of instructions, a series of program invocations, etc.
A race condition violates these properties, which are closely related:
Exclusivity - the code sequence is given exclusive access to the shared resource, i.e., no other code sequence can modify properties of the shared resource before the original sequence has completed execution.
Atomicity - the code sequence is behaviorally atomic, i.e., no other thread or process can concurrently execute the same sequence of instructions (or a subset) against the same resource.
A race condition exists when an "interfering code sequence" can still access the shared resource, violating exclusivity. Programmers may assume that certain code sequences execute too quickly to be affected by an interfering code sequence; when they are not, this violates atomicity. For example, the single "x++" statement may appear atomic at the code layer, but it is actually non-atomic at the instruction layer, since it involves a read (the original value of x), followed by a computation (x+1), followed by a write (save the result to x).
The interfering code sequence could be "trusted" or "untrusted." A trusted interfering code sequence occurs within the program; it cannot be modified by the attacker, and it can only be invoked indirectly. An untrusted interfering code sequence can be authored directly by the attacker, and typically it is external to the vulnerable program.
| https://cwe.mitre.org/data/definitions/362.html | 0 | Jan Kara | 2015-12-07 14:28:03-05:00 | ext4: fix races between page faults and hole punching
Currently, page faults and hole punching are completely unsynchronized.
This can result in page fault faulting in a page into a range that we
are punching after truncate_pagecache_range() has been called and thus
we can end up with a page mapped to disk blocks that will be shortly
freed. Filesystem corruption will shortly follow. Note that the same
race is avoided for truncate by checking page fault offset against
i_size but there isn't similar mechanism available for punching holes.
Fix the problem by creating new rw semaphore i_mmap_sem in inode and
grab it for writing over truncate, hole punching, and other functions
removing blocks from extent tree and for read over page faults. We
cannot easily use i_data_sem for this since that ranks below transaction
start and we need something ranking above it so that it can be held over
the whole truncate / hole punching operation. Also remove various
workarounds we had in the code to reduce race window when page fault
could have created pages with stale mapping information.
Signed-off-by: Jan Kara <[email protected]>
Signed-off-by: Theodore Ts'o <[email protected]> | ea3d7209ca01da209cda6f0dea8be9cc4b7a933b | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | ext4_collapse_range | ext4_collapse_range( struct inode * inode , loff_t offset , loff_t len) | ['inode', 'offset', 'len'] | int ext4_collapse_range(struct inode *inode, loff_t offset, loff_t len)
{
struct super_block *sb = inode->i_sb;
ext4_lblk_t punch_start, punch_stop;
handle_t *handle;
unsigned int credits;
loff_t new_size, ioffset;
int ret;
/*
* We need to test this early because xfstests assumes that a
* collapse range of (0, 1) will return EOPNOTSUPP if the file
* system does not support collapse range.
*/
if (!ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))
return -EOPNOTSUPP;
/* Collapse range works only on fs block size aligned offsets. */
if (offset & (EXT4_CLUSTER_SIZE(sb) - 1) ||
len & (EXT4_CLUSTER_SIZE(sb) - 1))
return -EINVAL;
if (!S_ISREG(inode->i_mode))
return -EINVAL;
trace_ext4_collapse_range(inode, offset, len);
punch_start = offset >> EXT4_BLOCK_SIZE_BITS(sb);
punch_stop = (offset + len) >> EXT4_BLOCK_SIZE_BITS(sb);
/* Call ext4_force_commit to flush all data in case of data=journal. */
if (ext4_should_journal_data(inode)) {
ret = ext4_force_commit(inode->i_sb);
if (ret)
return ret;
}
/*
* Need to round down offset to be aligned with page size boundary
* for page size > block size.
*/
ioffset = round_down(offset, PAGE_SIZE);
/* Write out all dirty pages */
ret = filemap_write_and_wait_range(inode->i_mapping, ioffset,
LLONG_MAX);
if (ret)
return ret;
/* Take mutex lock */
mutex_lock(&inode->i_mutex);
/*
* There is no need to overlap collapse range with EOF, in which case
* it is effectively a truncate operation
*/
if (offset + len >= i_size_read(inode)) {
ret = -EINVAL;
goto out_mutex;
}
/* Currently just for extent based files */
if (!ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)) {
ret = -EOPNOTSUPP;
goto out_mutex;
}
truncate_pagecache(inode, ioffset);
/* Wait for existing dio to complete */
ext4_inode_block_unlocked_dio(inode);
inode_dio_wait(inode);
credits = ext4_writepage_trans_blocks(inode);
handle = ext4_journal_start(inode, EXT4_HT_TRUNCATE, credits);
if (IS_ERR(handle)) {
ret = PTR_ERR(handle);
goto out_dio;
}
down_write(&EXT4_I(inode)->i_data_sem);
ext4_discard_preallocations(inode);
ret = ext4_es_remove_extent(inode, punch_start,
EXT_MAX_BLOCKS - punch_start);
if (ret) {
up_write(&EXT4_I(inode)->i_data_sem);
goto out_stop;
}
ret = ext4_ext_remove_space(inode, punch_start, punch_stop - 1);
if (ret) {
up_write(&EXT4_I(inode)->i_data_sem);
goto out_stop;
}
ext4_discard_preallocations(inode);
ret = ext4_ext_shift_extents(inode, handle, punch_stop,
punch_stop - punch_start, SHIFT_LEFT);
if (ret) {
up_write(&EXT4_I(inode)->i_data_sem);
goto out_stop;
}
new_size = i_size_read(inode) - len;
i_size_write(inode, new_size);
EXT4_I(inode)->i_disksize = new_size;
up_write(&EXT4_I(inode)->i_data_sem);
if (IS_SYNC(inode))
ext4_handle_sync(handle);
inode->i_mtime = inode->i_ctime = ext4_current_time(inode);
ext4_mark_inode_dirty(handle, inode);
out_stop:
ext4_journal_stop(handle);
out_dio:
ext4_inode_resume_unlocked_dio(inode);
out_mutex:
mutex_unlock(&inode->i_mutex);
return ret;
} | 510 | True | 1 |
|
CVE-2015-8839 | False | False | False | False | AV:L/AC:M/Au:N/C:N/I:N/A:P | LOCAL | MEDIUM | NONE | NONE | NONE | PARTIAL | 1.9 | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H | LOCAL | HIGH | NONE | NONE | UNCHANGED | NONE | NONE | HIGH | 5.1 | MEDIUM | 1.4 | 3.6 | nan | [{'url': 'https://github.com/torvalds/linux/commit/ea3d7209ca01da209cda6f0dea8be9cc4b7a933b', 'name': 'https://github.com/torvalds/linux/commit/ea3d7209ca01da209cda6f0dea8be9cc4b7a933b', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ea3d7209ca01da209cda6f0dea8be9cc4b7a933b', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ea3d7209ca01da209cda6f0dea8be9cc4b7a933b', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2016/04/01/4', 'name': '[oss-security] 20160401 Re: ext4 data corruption due to punch hole races', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1323577', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1323577', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-3007-1', 'name': 'USN-3007-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-3005-1', 'name': 'USN-3005-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-3006-1', 'name': 'USN-3006-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/85798', 'name': '85798', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://www.securitytracker.com/id/1035455', 'name': '1035455', 'refsource': 'SECTRACK', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'https://access.redhat.com/errata/RHSA-2017:2669', 'name': 'RHSA-2017:2669', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'https://access.redhat.com/errata/RHSA-2017:2077', 'name': 'RHSA-2017:2077', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'https://access.redhat.com/errata/RHSA-2017:1842', 'name': 'RHSA-2017:1842', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html', 'name': '[debian-lts-announce] 20200609 [SECURITY] [DLA 2241-1] linux security update', 'refsource': 'MLIST', 'tags': ['Third Party Advisory']}, {'url': 'https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html', 'name': '[debian-lts-announce] 20200610 [SECURITY] [DLA 2241-2] linux security update', 'refsource': 'MLIST', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'CWE-362'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc7:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc6:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc5:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc4:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc3:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc2:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc1:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.4.221', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': "Multiple race conditions in the ext4 filesystem implementation in the Linux kernel before 4.5 allow local users to cause a denial of service (disk corruption) by writing to a page that is associated with a different user's file after unsynchronized hole punching and page-fault handling."}] | 2020-10-02T14:56Z | 2016-05-02T10:59Z | Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') | The program contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. |
This can have security implications when the expected synchronization is in security-critical code, such as recording whether a user is authenticated or modifying important state information that should not be influenced by an outsider.
A race condition occurs within concurrent environments, and is effectively a property of a code sequence. Depending on the context, a code sequence may be in the form of a function call, a small number of instructions, a series of program invocations, etc.
A race condition violates these properties, which are closely related:
Exclusivity - the code sequence is given exclusive access to the shared resource, i.e., no other code sequence can modify properties of the shared resource before the original sequence has completed execution.
Atomicity - the code sequence is behaviorally atomic, i.e., no other thread or process can concurrently execute the same sequence of instructions (or a subset) against the same resource.
A race condition exists when an "interfering code sequence" can still access the shared resource, violating exclusivity. Programmers may assume that certain code sequences execute too quickly to be affected by an interfering code sequence; when they are not, this violates atomicity. For example, the single "x++" statement may appear atomic at the code layer, but it is actually non-atomic at the instruction layer, since it involves a read (the original value of x), followed by a computation (x+1), followed by a write (save the result to x).
The interfering code sequence could be "trusted" or "untrusted." A trusted interfering code sequence occurs within the program; it cannot be modified by the attacker, and it can only be invoked indirectly. An untrusted interfering code sequence can be authored directly by the attacker, and typically it is external to the vulnerable program.
| https://cwe.mitre.org/data/definitions/362.html | 0 | Jan Kara | 2015-12-07 14:28:03-05:00 | ext4: fix races between page faults and hole punching
Currently, page faults and hole punching are completely unsynchronized.
This can result in page fault faulting in a page into a range that we
are punching after truncate_pagecache_range() has been called and thus
we can end up with a page mapped to disk blocks that will be shortly
freed. Filesystem corruption will shortly follow. Note that the same
race is avoided for truncate by checking page fault offset against
i_size but there isn't similar mechanism available for punching holes.
Fix the problem by creating new rw semaphore i_mmap_sem in inode and
grab it for writing over truncate, hole punching, and other functions
removing blocks from extent tree and for read over page faults. We
cannot easily use i_data_sem for this since that ranks below transaction
start and we need something ranking above it so that it can be held over
the whole truncate / hole punching operation. Also remove various
workarounds we had in the code to reduce race window when page fault
could have created pages with stale mapping information.
Signed-off-by: Jan Kara <[email protected]>
Signed-off-by: Theodore Ts'o <[email protected]> | ea3d7209ca01da209cda6f0dea8be9cc4b7a933b | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | ext4_insert_range | ext4_insert_range( struct inode * inode , loff_t offset , loff_t len) | ['inode', 'offset', 'len'] | int ext4_insert_range(struct inode *inode, loff_t offset, loff_t len)
{
struct super_block *sb = inode->i_sb;
handle_t *handle;
struct ext4_ext_path *path;
struct ext4_extent *extent;
ext4_lblk_t offset_lblk, len_lblk, ee_start_lblk = 0;
unsigned int credits, ee_len;
int ret = 0, depth, split_flag = 0;
loff_t ioffset;
/*
* We need to test this early because xfstests assumes that an
* insert range of (0, 1) will return EOPNOTSUPP if the file
* system does not support insert range.
*/
if (!ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))
return -EOPNOTSUPP;
/* Insert range works only on fs block size aligned offsets. */
if (offset & (EXT4_CLUSTER_SIZE(sb) - 1) ||
len & (EXT4_CLUSTER_SIZE(sb) - 1))
return -EINVAL;
if (!S_ISREG(inode->i_mode))
return -EOPNOTSUPP;
trace_ext4_insert_range(inode, offset, len);
offset_lblk = offset >> EXT4_BLOCK_SIZE_BITS(sb);
len_lblk = len >> EXT4_BLOCK_SIZE_BITS(sb);
/* Call ext4_force_commit to flush all data in case of data=journal */
if (ext4_should_journal_data(inode)) {
ret = ext4_force_commit(inode->i_sb);
if (ret)
return ret;
}
/*
* Need to round down to align start offset to page size boundary
* for page size > block size.
*/
ioffset = round_down(offset, PAGE_SIZE);
/* Write out all dirty pages */
ret = filemap_write_and_wait_range(inode->i_mapping, ioffset,
LLONG_MAX);
if (ret)
return ret;
/* Take mutex lock */
mutex_lock(&inode->i_mutex);
/* Currently just for extent based files */
if (!ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)) {
ret = -EOPNOTSUPP;
goto out_mutex;
}
/* Check for wrap through zero */
if (inode->i_size + len > inode->i_sb->s_maxbytes) {
ret = -EFBIG;
goto out_mutex;
}
/* Offset should be less than i_size */
if (offset >= i_size_read(inode)) {
ret = -EINVAL;
goto out_mutex;
}
truncate_pagecache(inode, ioffset);
/* Wait for existing dio to complete */
ext4_inode_block_unlocked_dio(inode);
inode_dio_wait(inode);
credits = ext4_writepage_trans_blocks(inode);
handle = ext4_journal_start(inode, EXT4_HT_TRUNCATE, credits);
if (IS_ERR(handle)) {
ret = PTR_ERR(handle);
goto out_dio;
}
/* Expand file to avoid data loss if there is error while shifting */
inode->i_size += len;
EXT4_I(inode)->i_disksize += len;
inode->i_mtime = inode->i_ctime = ext4_current_time(inode);
ret = ext4_mark_inode_dirty(handle, inode);
if (ret)
goto out_stop;
down_write(&EXT4_I(inode)->i_data_sem);
ext4_discard_preallocations(inode);
path = ext4_find_extent(inode, offset_lblk, NULL, 0);
if (IS_ERR(path)) {
up_write(&EXT4_I(inode)->i_data_sem);
goto out_stop;
}
depth = ext_depth(inode);
extent = path[depth].p_ext;
if (extent) {
ee_start_lblk = le32_to_cpu(extent->ee_block);
ee_len = ext4_ext_get_actual_len(extent);
/*
* If offset_lblk is not the starting block of extent, split
* the extent @offset_lblk
*/
if ((offset_lblk > ee_start_lblk) &&
(offset_lblk < (ee_start_lblk + ee_len))) {
if (ext4_ext_is_unwritten(extent))
split_flag = EXT4_EXT_MARK_UNWRIT1 |
EXT4_EXT_MARK_UNWRIT2;
ret = ext4_split_extent_at(handle, inode, &path,
offset_lblk, split_flag,
EXT4_EX_NOCACHE |
EXT4_GET_BLOCKS_PRE_IO |
EXT4_GET_BLOCKS_METADATA_NOFAIL);
}
ext4_ext_drop_refs(path);
kfree(path);
if (ret < 0) {
up_write(&EXT4_I(inode)->i_data_sem);
goto out_stop;
}
}
ret = ext4_es_remove_extent(inode, offset_lblk,
EXT_MAX_BLOCKS - offset_lblk);
if (ret) {
up_write(&EXT4_I(inode)->i_data_sem);
goto out_stop;
}
/*
* if offset_lblk lies in a hole which is at start of file, use
* ee_start_lblk to shift extents
*/
ret = ext4_ext_shift_extents(inode, handle,
ee_start_lblk > offset_lblk ? ee_start_lblk : offset_lblk,
len_lblk, SHIFT_RIGHT);
up_write(&EXT4_I(inode)->i_data_sem);
if (IS_SYNC(inode))
ext4_handle_sync(handle);
out_stop:
ext4_journal_stop(handle);
out_dio:
ext4_inode_resume_unlocked_dio(inode);
out_mutex:
mutex_unlock(&inode->i_mutex);
return ret;
} | 656 | True | 1 |
|
CVE-2015-8839 | False | False | False | False | AV:L/AC:M/Au:N/C:N/I:N/A:P | LOCAL | MEDIUM | NONE | NONE | NONE | PARTIAL | 1.9 | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H | LOCAL | HIGH | NONE | NONE | UNCHANGED | NONE | NONE | HIGH | 5.1 | MEDIUM | 1.4 | 3.6 | nan | [{'url': 'https://github.com/torvalds/linux/commit/ea3d7209ca01da209cda6f0dea8be9cc4b7a933b', 'name': 'https://github.com/torvalds/linux/commit/ea3d7209ca01da209cda6f0dea8be9cc4b7a933b', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ea3d7209ca01da209cda6f0dea8be9cc4b7a933b', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ea3d7209ca01da209cda6f0dea8be9cc4b7a933b', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2016/04/01/4', 'name': '[oss-security] 20160401 Re: ext4 data corruption due to punch hole races', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1323577', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1323577', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-3007-1', 'name': 'USN-3007-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-3005-1', 'name': 'USN-3005-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-3006-1', 'name': 'USN-3006-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/85798', 'name': '85798', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://www.securitytracker.com/id/1035455', 'name': '1035455', 'refsource': 'SECTRACK', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'https://access.redhat.com/errata/RHSA-2017:2669', 'name': 'RHSA-2017:2669', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'https://access.redhat.com/errata/RHSA-2017:2077', 'name': 'RHSA-2017:2077', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'https://access.redhat.com/errata/RHSA-2017:1842', 'name': 'RHSA-2017:1842', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html', 'name': '[debian-lts-announce] 20200609 [SECURITY] [DLA 2241-1] linux security update', 'refsource': 'MLIST', 'tags': ['Third Party Advisory']}, {'url': 'https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html', 'name': '[debian-lts-announce] 20200610 [SECURITY] [DLA 2241-2] linux security update', 'refsource': 'MLIST', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'CWE-362'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc7:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc6:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc5:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc4:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc3:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc2:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc1:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.4.221', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': "Multiple race conditions in the ext4 filesystem implementation in the Linux kernel before 4.5 allow local users to cause a denial of service (disk corruption) by writing to a page that is associated with a different user's file after unsynchronized hole punching and page-fault handling."}] | 2020-10-02T14:56Z | 2016-05-02T10:59Z | Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') | The program contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. |
This can have security implications when the expected synchronization is in security-critical code, such as recording whether a user is authenticated or modifying important state information that should not be influenced by an outsider.
A race condition occurs within concurrent environments, and is effectively a property of a code sequence. Depending on the context, a code sequence may be in the form of a function call, a small number of instructions, a series of program invocations, etc.
A race condition violates these properties, which are closely related:
Exclusivity - the code sequence is given exclusive access to the shared resource, i.e., no other code sequence can modify properties of the shared resource before the original sequence has completed execution.
Atomicity - the code sequence is behaviorally atomic, i.e., no other thread or process can concurrently execute the same sequence of instructions (or a subset) against the same resource.
A race condition exists when an "interfering code sequence" can still access the shared resource, violating exclusivity. Programmers may assume that certain code sequences execute too quickly to be affected by an interfering code sequence; when they are not, this violates atomicity. For example, the single "x++" statement may appear atomic at the code layer, but it is actually non-atomic at the instruction layer, since it involves a read (the original value of x), followed by a computation (x+1), followed by a write (save the result to x).
The interfering code sequence could be "trusted" or "untrusted." A trusted interfering code sequence occurs within the program; it cannot be modified by the attacker, and it can only be invoked indirectly. An untrusted interfering code sequence can be authored directly by the attacker, and typically it is external to the vulnerable program.
| https://cwe.mitre.org/data/definitions/362.html | 0 | Jan Kara | 2015-12-07 14:28:03-05:00 | ext4: fix races between page faults and hole punching
Currently, page faults and hole punching are completely unsynchronized.
This can result in page fault faulting in a page into a range that we
are punching after truncate_pagecache_range() has been called and thus
we can end up with a page mapped to disk blocks that will be shortly
freed. Filesystem corruption will shortly follow. Note that the same
race is avoided for truncate by checking page fault offset against
i_size but there isn't similar mechanism available for punching holes.
Fix the problem by creating new rw semaphore i_mmap_sem in inode and
grab it for writing over truncate, hole punching, and other functions
removing blocks from extent tree and for read over page faults. We
cannot easily use i_data_sem for this since that ranks below transaction
start and we need something ranking above it so that it can be held over
the whole truncate / hole punching operation. Also remove various
workarounds we had in the code to reduce race window when page fault
could have created pages with stale mapping information.
Signed-off-by: Jan Kara <[email protected]>
Signed-off-by: Theodore Ts'o <[email protected]> | ea3d7209ca01da209cda6f0dea8be9cc4b7a933b | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | ext4_zero_range | ext4_zero_range( struct file * file , loff_t offset , loff_t len , int mode) | ['file', 'offset', 'len', 'mode'] | static long ext4_zero_range(struct file *file, loff_t offset,
loff_t len, int mode)
{
struct inode *inode = file_inode(file);
handle_t *handle = NULL;
unsigned int max_blocks;
loff_t new_size = 0;
int ret = 0;
int flags;
int credits;
int partial_begin, partial_end;
loff_t start, end;
ext4_lblk_t lblk;
struct address_space *mapping = inode->i_mapping;
unsigned int blkbits = inode->i_blkbits;
trace_ext4_zero_range(inode, offset, len, mode);
if (!S_ISREG(inode->i_mode))
return -EINVAL;
/* Call ext4_force_commit to flush all data in case of data=journal. */
if (ext4_should_journal_data(inode)) {
ret = ext4_force_commit(inode->i_sb);
if (ret)
return ret;
}
/*
* Write out all dirty pages to avoid race conditions
* Then release them.
*/
if (mapping->nrpages && mapping_tagged(mapping, PAGECACHE_TAG_DIRTY)) {
ret = filemap_write_and_wait_range(mapping, offset,
offset + len - 1);
if (ret)
return ret;
}
/*
* Round up offset. This is not fallocate, we neet to zero out
* blocks, so convert interior block aligned part of the range to
* unwritten and possibly manually zero out unaligned parts of the
* range.
*/
start = round_up(offset, 1 << blkbits);
end = round_down((offset + len), 1 << blkbits);
if (start < offset || end > offset + len)
return -EINVAL;
partial_begin = offset & ((1 << blkbits) - 1);
partial_end = (offset + len) & ((1 << blkbits) - 1);
lblk = start >> blkbits;
max_blocks = (end >> blkbits);
if (max_blocks < lblk)
max_blocks = 0;
else
max_blocks -= lblk;
mutex_lock(&inode->i_mutex);
/*
* Indirect files do not support unwritten extnets
*/
if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))) {
ret = -EOPNOTSUPP;
goto out_mutex;
}
if (!(mode & FALLOC_FL_KEEP_SIZE) &&
offset + len > i_size_read(inode)) {
new_size = offset + len;
ret = inode_newsize_ok(inode, new_size);
if (ret)
goto out_mutex;
}
flags = EXT4_GET_BLOCKS_CREATE_UNWRIT_EXT;
if (mode & FALLOC_FL_KEEP_SIZE)
flags |= EXT4_GET_BLOCKS_KEEP_SIZE;
/* Preallocate the range including the unaligned edges */
if (partial_begin || partial_end) {
ret = ext4_alloc_file_blocks(file,
round_down(offset, 1 << blkbits) >> blkbits,
(round_up((offset + len), 1 << blkbits) -
round_down(offset, 1 << blkbits)) >> blkbits,
new_size, flags, mode);
if (ret)
goto out_mutex;
}
/* Zero range excluding the unaligned edges */
if (max_blocks > 0) {
flags |= (EXT4_GET_BLOCKS_CONVERT_UNWRITTEN |
EXT4_EX_NOCACHE);
/* Now release the pages and zero block aligned part of pages*/
truncate_pagecache_range(inode, start, end - 1);
inode->i_mtime = inode->i_ctime = ext4_current_time(inode);
/* Wait all existing dio workers, newcomers will block on i_mutex */
ext4_inode_block_unlocked_dio(inode);
inode_dio_wait(inode);
ret = ext4_alloc_file_blocks(file, lblk, max_blocks, new_size,
flags, mode);
if (ret)
goto out_dio;
}
if (!partial_begin && !partial_end)
goto out_dio;
/*
* In worst case we have to writeout two nonadjacent unwritten
* blocks and update the inode
*/
credits = (2 * ext4_ext_index_trans_blocks(inode, 2)) + 1;
if (ext4_should_journal_data(inode))
credits += 2;
handle = ext4_journal_start(inode, EXT4_HT_MISC, credits);
if (IS_ERR(handle)) {
ret = PTR_ERR(handle);
ext4_std_error(inode->i_sb, ret);
goto out_dio;
}
inode->i_mtime = inode->i_ctime = ext4_current_time(inode);
if (new_size) {
ext4_update_inode_size(inode, new_size);
} else {
/*
* Mark that we allocate beyond EOF so the subsequent truncate
* can proceed even if the new size is the same as i_size.
*/
if ((offset + len) > i_size_read(inode))
ext4_set_inode_flag(inode, EXT4_INODE_EOFBLOCKS);
}
ext4_mark_inode_dirty(handle, inode);
/* Zero out partial block at the edges of the range */
ret = ext4_zero_partial_blocks(handle, inode, offset, len);
if (file->f_flags & O_SYNC)
ext4_handle_sync(handle);
ext4_journal_stop(handle);
out_dio:
ext4_inode_resume_unlocked_dio(inode);
out_mutex:
mutex_unlock(&inode->i_mutex);
return ret;
} | 693 | True | 1 |
|
CVE-2015-8839 | False | False | False | False | AV:L/AC:M/Au:N/C:N/I:N/A:P | LOCAL | MEDIUM | NONE | NONE | NONE | PARTIAL | 1.9 | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H | LOCAL | HIGH | NONE | NONE | UNCHANGED | NONE | NONE | HIGH | 5.1 | MEDIUM | 1.4 | 3.6 | nan | [{'url': 'https://github.com/torvalds/linux/commit/ea3d7209ca01da209cda6f0dea8be9cc4b7a933b', 'name': 'https://github.com/torvalds/linux/commit/ea3d7209ca01da209cda6f0dea8be9cc4b7a933b', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ea3d7209ca01da209cda6f0dea8be9cc4b7a933b', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ea3d7209ca01da209cda6f0dea8be9cc4b7a933b', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2016/04/01/4', 'name': '[oss-security] 20160401 Re: ext4 data corruption due to punch hole races', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1323577', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1323577', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-3007-1', 'name': 'USN-3007-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-3005-1', 'name': 'USN-3005-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-3006-1', 'name': 'USN-3006-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/85798', 'name': '85798', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://www.securitytracker.com/id/1035455', 'name': '1035455', 'refsource': 'SECTRACK', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'https://access.redhat.com/errata/RHSA-2017:2669', 'name': 'RHSA-2017:2669', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'https://access.redhat.com/errata/RHSA-2017:2077', 'name': 'RHSA-2017:2077', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'https://access.redhat.com/errata/RHSA-2017:1842', 'name': 'RHSA-2017:1842', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html', 'name': '[debian-lts-announce] 20200609 [SECURITY] [DLA 2241-1] linux security update', 'refsource': 'MLIST', 'tags': ['Third Party Advisory']}, {'url': 'https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html', 'name': '[debian-lts-announce] 20200610 [SECURITY] [DLA 2241-2] linux security update', 'refsource': 'MLIST', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'CWE-362'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc7:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc6:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc5:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc4:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc3:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc2:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc1:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.4.221', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': "Multiple race conditions in the ext4 filesystem implementation in the Linux kernel before 4.5 allow local users to cause a denial of service (disk corruption) by writing to a page that is associated with a different user's file after unsynchronized hole punching and page-fault handling."}] | 2020-10-02T14:56Z | 2016-05-02T10:59Z | Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') | The program contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. |
This can have security implications when the expected synchronization is in security-critical code, such as recording whether a user is authenticated or modifying important state information that should not be influenced by an outsider.
A race condition occurs within concurrent environments, and is effectively a property of a code sequence. Depending on the context, a code sequence may be in the form of a function call, a small number of instructions, a series of program invocations, etc.
A race condition violates these properties, which are closely related:
Exclusivity - the code sequence is given exclusive access to the shared resource, i.e., no other code sequence can modify properties of the shared resource before the original sequence has completed execution.
Atomicity - the code sequence is behaviorally atomic, i.e., no other thread or process can concurrently execute the same sequence of instructions (or a subset) against the same resource.
A race condition exists when an "interfering code sequence" can still access the shared resource, violating exclusivity. Programmers may assume that certain code sequences execute too quickly to be affected by an interfering code sequence; when they are not, this violates atomicity. For example, the single "x++" statement may appear atomic at the code layer, but it is actually non-atomic at the instruction layer, since it involves a read (the original value of x), followed by a computation (x+1), followed by a write (save the result to x).
The interfering code sequence could be "trusted" or "untrusted." A trusted interfering code sequence occurs within the program; it cannot be modified by the attacker, and it can only be invoked indirectly. An untrusted interfering code sequence can be authored directly by the attacker, and typically it is external to the vulnerable program.
| https://cwe.mitre.org/data/definitions/362.html | 0 | Jan Kara | 2015-12-07 14:28:03-05:00 | ext4: fix races between page faults and hole punching
Currently, page faults and hole punching are completely unsynchronized.
This can result in page fault faulting in a page into a range that we
are punching after truncate_pagecache_range() has been called and thus
we can end up with a page mapped to disk blocks that will be shortly
freed. Filesystem corruption will shortly follow. Note that the same
race is avoided for truncate by checking page fault offset against
i_size but there isn't similar mechanism available for punching holes.
Fix the problem by creating new rw semaphore i_mmap_sem in inode and
grab it for writing over truncate, hole punching, and other functions
removing blocks from extent tree and for read over page faults. We
cannot easily use i_data_sem for this since that ranks below transaction
start and we need something ranking above it so that it can be held over
the whole truncate / hole punching operation. Also remove various
workarounds we had in the code to reduce race window when page fault
could have created pages with stale mapping information.
Signed-off-by: Jan Kara <[email protected]>
Signed-off-by: Theodore Ts'o <[email protected]> | ea3d7209ca01da209cda6f0dea8be9cc4b7a933b | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | ext4_dax_fault | ext4_dax_fault( struct vm_area_struct * vma , struct vm_fault * vmf) | ['vma', 'vmf'] | static int ext4_dax_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
{
int result;
handle_t *handle = NULL;
struct super_block *sb = file_inode(vma->vm_file)->i_sb;
bool write = vmf->flags & FAULT_FLAG_WRITE;
if (write) {
sb_start_pagefault(sb);
file_update_time(vma->vm_file);
handle = ext4_journal_start_sb(sb, EXT4_HT_WRITE_PAGE,
EXT4_DATA_TRANS_BLOCKS(sb));
}
if (IS_ERR(handle))
result = VM_FAULT_SIGBUS;
else
result = __dax_fault(vma, vmf, ext4_get_block_dax,
ext4_end_io_unwritten);
if (write) {
if (!IS_ERR(handle))
ext4_journal_stop(handle);
sb_end_pagefault(sb);
}
return result;
} | 130 | True | 1 |
|
CVE-2015-8839 | False | False | False | False | AV:L/AC:M/Au:N/C:N/I:N/A:P | LOCAL | MEDIUM | NONE | NONE | NONE | PARTIAL | 1.9 | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H | LOCAL | HIGH | NONE | NONE | UNCHANGED | NONE | NONE | HIGH | 5.1 | MEDIUM | 1.4 | 3.6 | nan | [{'url': 'https://github.com/torvalds/linux/commit/ea3d7209ca01da209cda6f0dea8be9cc4b7a933b', 'name': 'https://github.com/torvalds/linux/commit/ea3d7209ca01da209cda6f0dea8be9cc4b7a933b', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ea3d7209ca01da209cda6f0dea8be9cc4b7a933b', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ea3d7209ca01da209cda6f0dea8be9cc4b7a933b', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2016/04/01/4', 'name': '[oss-security] 20160401 Re: ext4 data corruption due to punch hole races', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1323577', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1323577', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-3007-1', 'name': 'USN-3007-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-3005-1', 'name': 'USN-3005-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-3006-1', 'name': 'USN-3006-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/85798', 'name': '85798', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://www.securitytracker.com/id/1035455', 'name': '1035455', 'refsource': 'SECTRACK', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'https://access.redhat.com/errata/RHSA-2017:2669', 'name': 'RHSA-2017:2669', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'https://access.redhat.com/errata/RHSA-2017:2077', 'name': 'RHSA-2017:2077', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'https://access.redhat.com/errata/RHSA-2017:1842', 'name': 'RHSA-2017:1842', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html', 'name': '[debian-lts-announce] 20200609 [SECURITY] [DLA 2241-1] linux security update', 'refsource': 'MLIST', 'tags': ['Third Party Advisory']}, {'url': 'https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html', 'name': '[debian-lts-announce] 20200610 [SECURITY] [DLA 2241-2] linux security update', 'refsource': 'MLIST', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'CWE-362'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc7:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc6:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc5:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc4:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc3:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc2:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc1:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.4.221', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': "Multiple race conditions in the ext4 filesystem implementation in the Linux kernel before 4.5 allow local users to cause a denial of service (disk corruption) by writing to a page that is associated with a different user's file after unsynchronized hole punching and page-fault handling."}] | 2020-10-02T14:56Z | 2016-05-02T10:59Z | Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') | The program contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. |
This can have security implications when the expected synchronization is in security-critical code, such as recording whether a user is authenticated or modifying important state information that should not be influenced by an outsider.
A race condition occurs within concurrent environments, and is effectively a property of a code sequence. Depending on the context, a code sequence may be in the form of a function call, a small number of instructions, a series of program invocations, etc.
A race condition violates these properties, which are closely related:
Exclusivity - the code sequence is given exclusive access to the shared resource, i.e., no other code sequence can modify properties of the shared resource before the original sequence has completed execution.
Atomicity - the code sequence is behaviorally atomic, i.e., no other thread or process can concurrently execute the same sequence of instructions (or a subset) against the same resource.
A race condition exists when an "interfering code sequence" can still access the shared resource, violating exclusivity. Programmers may assume that certain code sequences execute too quickly to be affected by an interfering code sequence; when they are not, this violates atomicity. For example, the single "x++" statement may appear atomic at the code layer, but it is actually non-atomic at the instruction layer, since it involves a read (the original value of x), followed by a computation (x+1), followed by a write (save the result to x).
The interfering code sequence could be "trusted" or "untrusted." A trusted interfering code sequence occurs within the program; it cannot be modified by the attacker, and it can only be invoked indirectly. An untrusted interfering code sequence can be authored directly by the attacker, and typically it is external to the vulnerable program.
| https://cwe.mitre.org/data/definitions/362.html | 0 | Jan Kara | 2015-12-07 14:28:03-05:00 | ext4: fix races between page faults and hole punching
Currently, page faults and hole punching are completely unsynchronized.
This can result in page fault faulting in a page into a range that we
are punching after truncate_pagecache_range() has been called and thus
we can end up with a page mapped to disk blocks that will be shortly
freed. Filesystem corruption will shortly follow. Note that the same
race is avoided for truncate by checking page fault offset against
i_size but there isn't similar mechanism available for punching holes.
Fix the problem by creating new rw semaphore i_mmap_sem in inode and
grab it for writing over truncate, hole punching, and other functions
removing blocks from extent tree and for read over page faults. We
cannot easily use i_data_sem for this since that ranks below transaction
start and we need something ranking above it so that it can be held over
the whole truncate / hole punching operation. Also remove various
workarounds we had in the code to reduce race window when page fault
could have created pages with stale mapping information.
Signed-off-by: Jan Kara <[email protected]>
Signed-off-by: Theodore Ts'o <[email protected]> | ea3d7209ca01da209cda6f0dea8be9cc4b7a933b | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | ext4_dax_mkwrite | ext4_dax_mkwrite( struct vm_area_struct * vma , struct vm_fault * vmf) | ['vma', 'vmf'] | static int ext4_dax_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
{
return dax_mkwrite(vma, vmf, ext4_get_block_dax,
ext4_end_io_unwritten);
} | 26 | True | 1 |
|
CVE-2015-8839 | False | False | False | False | AV:L/AC:M/Au:N/C:N/I:N/A:P | LOCAL | MEDIUM | NONE | NONE | NONE | PARTIAL | 1.9 | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H | LOCAL | HIGH | NONE | NONE | UNCHANGED | NONE | NONE | HIGH | 5.1 | MEDIUM | 1.4 | 3.6 | nan | [{'url': 'https://github.com/torvalds/linux/commit/ea3d7209ca01da209cda6f0dea8be9cc4b7a933b', 'name': 'https://github.com/torvalds/linux/commit/ea3d7209ca01da209cda6f0dea8be9cc4b7a933b', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ea3d7209ca01da209cda6f0dea8be9cc4b7a933b', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ea3d7209ca01da209cda6f0dea8be9cc4b7a933b', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2016/04/01/4', 'name': '[oss-security] 20160401 Re: ext4 data corruption due to punch hole races', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1323577', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1323577', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-3007-1', 'name': 'USN-3007-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-3005-1', 'name': 'USN-3005-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-3006-1', 'name': 'USN-3006-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/85798', 'name': '85798', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://www.securitytracker.com/id/1035455', 'name': '1035455', 'refsource': 'SECTRACK', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'https://access.redhat.com/errata/RHSA-2017:2669', 'name': 'RHSA-2017:2669', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'https://access.redhat.com/errata/RHSA-2017:2077', 'name': 'RHSA-2017:2077', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'https://access.redhat.com/errata/RHSA-2017:1842', 'name': 'RHSA-2017:1842', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html', 'name': '[debian-lts-announce] 20200609 [SECURITY] [DLA 2241-1] linux security update', 'refsource': 'MLIST', 'tags': ['Third Party Advisory']}, {'url': 'https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html', 'name': '[debian-lts-announce] 20200610 [SECURITY] [DLA 2241-2] linux security update', 'refsource': 'MLIST', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'CWE-362'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc7:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc6:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc5:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc4:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc3:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc2:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc1:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.4.221', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': "Multiple race conditions in the ext4 filesystem implementation in the Linux kernel before 4.5 allow local users to cause a denial of service (disk corruption) by writing to a page that is associated with a different user's file after unsynchronized hole punching and page-fault handling."}] | 2020-10-02T14:56Z | 2016-05-02T10:59Z | Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') | The program contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. |
This can have security implications when the expected synchronization is in security-critical code, such as recording whether a user is authenticated or modifying important state information that should not be influenced by an outsider.
A race condition occurs within concurrent environments, and is effectively a property of a code sequence. Depending on the context, a code sequence may be in the form of a function call, a small number of instructions, a series of program invocations, etc.
A race condition violates these properties, which are closely related:
Exclusivity - the code sequence is given exclusive access to the shared resource, i.e., no other code sequence can modify properties of the shared resource before the original sequence has completed execution.
Atomicity - the code sequence is behaviorally atomic, i.e., no other thread or process can concurrently execute the same sequence of instructions (or a subset) against the same resource.
A race condition exists when an "interfering code sequence" can still access the shared resource, violating exclusivity. Programmers may assume that certain code sequences execute too quickly to be affected by an interfering code sequence; when they are not, this violates atomicity. For example, the single "x++" statement may appear atomic at the code layer, but it is actually non-atomic at the instruction layer, since it involves a read (the original value of x), followed by a computation (x+1), followed by a write (save the result to x).
The interfering code sequence could be "trusted" or "untrusted." A trusted interfering code sequence occurs within the program; it cannot be modified by the attacker, and it can only be invoked indirectly. An untrusted interfering code sequence can be authored directly by the attacker, and typically it is external to the vulnerable program.
| https://cwe.mitre.org/data/definitions/362.html | 0 | Jan Kara | 2015-12-07 14:28:03-05:00 | ext4: fix races between page faults and hole punching
Currently, page faults and hole punching are completely unsynchronized.
This can result in page fault faulting in a page into a range that we
are punching after truncate_pagecache_range() has been called and thus
we can end up with a page mapped to disk blocks that will be shortly
freed. Filesystem corruption will shortly follow. Note that the same
race is avoided for truncate by checking page fault offset against
i_size but there isn't similar mechanism available for punching holes.
Fix the problem by creating new rw semaphore i_mmap_sem in inode and
grab it for writing over truncate, hole punching, and other functions
removing blocks from extent tree and for read over page faults. We
cannot easily use i_data_sem for this since that ranks below transaction
start and we need something ranking above it so that it can be held over
the whole truncate / hole punching operation. Also remove various
workarounds we had in the code to reduce race window when page fault
could have created pages with stale mapping information.
Signed-off-by: Jan Kara <[email protected]>
Signed-off-by: Theodore Ts'o <[email protected]> | ea3d7209ca01da209cda6f0dea8be9cc4b7a933b | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | ext4_dax_pmd_fault | ext4_dax_pmd_fault( struct vm_area_struct * vma , unsigned long addr , pmd_t * pmd , unsigned int flags) | ['vma', 'addr', 'pmd', 'flags'] | static int ext4_dax_pmd_fault(struct vm_area_struct *vma, unsigned long addr,
pmd_t *pmd, unsigned int flags)
{
int result;
handle_t *handle = NULL;
struct inode *inode = file_inode(vma->vm_file);
struct super_block *sb = inode->i_sb;
bool write = flags & FAULT_FLAG_WRITE;
if (write) {
sb_start_pagefault(sb);
file_update_time(vma->vm_file);
handle = ext4_journal_start_sb(sb, EXT4_HT_WRITE_PAGE,
ext4_chunk_trans_blocks(inode,
PMD_SIZE / PAGE_SIZE));
}
if (IS_ERR(handle))
result = VM_FAULT_SIGBUS;
else
result = __dax_pmd_fault(vma, addr, pmd, flags,
ext4_get_block_dax, ext4_end_io_unwritten);
if (write) {
if (!IS_ERR(handle))
ext4_journal_stop(handle);
sb_end_pagefault(sb);
}
return result;
} | 150 | True | 1 |
|
CVE-2015-8839 | False | False | False | False | AV:L/AC:M/Au:N/C:N/I:N/A:P | LOCAL | MEDIUM | NONE | NONE | NONE | PARTIAL | 1.9 | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H | LOCAL | HIGH | NONE | NONE | UNCHANGED | NONE | NONE | HIGH | 5.1 | MEDIUM | 1.4 | 3.6 | nan | [{'url': 'https://github.com/torvalds/linux/commit/ea3d7209ca01da209cda6f0dea8be9cc4b7a933b', 'name': 'https://github.com/torvalds/linux/commit/ea3d7209ca01da209cda6f0dea8be9cc4b7a933b', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ea3d7209ca01da209cda6f0dea8be9cc4b7a933b', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ea3d7209ca01da209cda6f0dea8be9cc4b7a933b', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2016/04/01/4', 'name': '[oss-security] 20160401 Re: ext4 data corruption due to punch hole races', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1323577', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1323577', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-3007-1', 'name': 'USN-3007-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-3005-1', 'name': 'USN-3005-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-3006-1', 'name': 'USN-3006-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/85798', 'name': '85798', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://www.securitytracker.com/id/1035455', 'name': '1035455', 'refsource': 'SECTRACK', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'https://access.redhat.com/errata/RHSA-2017:2669', 'name': 'RHSA-2017:2669', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'https://access.redhat.com/errata/RHSA-2017:2077', 'name': 'RHSA-2017:2077', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'https://access.redhat.com/errata/RHSA-2017:1842', 'name': 'RHSA-2017:1842', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html', 'name': '[debian-lts-announce] 20200609 [SECURITY] [DLA 2241-1] linux security update', 'refsource': 'MLIST', 'tags': ['Third Party Advisory']}, {'url': 'https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html', 'name': '[debian-lts-announce] 20200610 [SECURITY] [DLA 2241-2] linux security update', 'refsource': 'MLIST', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'CWE-362'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc7:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc6:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc5:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc4:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc3:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc2:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.5:rc1:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.4.221', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': "Multiple race conditions in the ext4 filesystem implementation in the Linux kernel before 4.5 allow local users to cause a denial of service (disk corruption) by writing to a page that is associated with a different user's file after unsynchronized hole punching and page-fault handling."}] | 2020-10-02T14:56Z | 2016-05-02T10:59Z | Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') | The program contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. |
This can have security implications when the expected synchronization is in security-critical code, such as recording whether a user is authenticated or modifying important state information that should not be influenced by an outsider.
A race condition occurs within concurrent environments, and is effectively a property of a code sequence. Depending on the context, a code sequence may be in the form of a function call, a small number of instructions, a series of program invocations, etc.
A race condition violates these properties, which are closely related:
Exclusivity - the code sequence is given exclusive access to the shared resource, i.e., no other code sequence can modify properties of the shared resource before the original sequence has completed execution.
Atomicity - the code sequence is behaviorally atomic, i.e., no other thread or process can concurrently execute the same sequence of instructions (or a subset) against the same resource.
A race condition exists when an "interfering code sequence" can still access the shared resource, violating exclusivity. Programmers may assume that certain code sequences execute too quickly to be affected by an interfering code sequence; when they are not, this violates atomicity. For example, the single "x++" statement may appear atomic at the code layer, but it is actually non-atomic at the instruction layer, since it involves a read (the original value of x), followed by a computation (x+1), followed by a write (save the result to x).
The interfering code sequence could be "trusted" or "untrusted." A trusted interfering code sequence occurs within the program; it cannot be modified by the attacker, and it can only be invoked indirectly. An untrusted interfering code sequence can be authored directly by the attacker, and typically it is external to the vulnerable program.
| https://cwe.mitre.org/data/definitions/362.html | 0 | Jan Kara | 2015-12-07 14:28:03-05:00 | ext4: fix races between page faults and hole punching
Currently, page faults and hole punching are completely unsynchronized.
This can result in page fault faulting in a page into a range that we
are punching after truncate_pagecache_range() has been called and thus
we can end up with a page mapped to disk blocks that will be shortly
freed. Filesystem corruption will shortly follow. Note that the same
race is avoided for truncate by checking page fault offset against
i_size but there isn't similar mechanism available for punching holes.
Fix the problem by creating new rw semaphore i_mmap_sem in inode and
grab it for writing over truncate, hole punching, and other functions
removing blocks from extent tree and for read over page faults. We
cannot easily use i_data_sem for this since that ranks below transaction
start and we need something ranking above it so that it can be held over
the whole truncate / hole punching operation. Also remove various
workarounds we had in the code to reduce race window when page fault
could have created pages with stale mapping information.
Signed-off-by: Jan Kara <[email protected]>
Signed-off-by: Theodore Ts'o <[email protected]> | ea3d7209ca01da209cda6f0dea8be9cc4b7a933b | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | ext4_punch_hole | ext4_punch_hole( struct inode * inode , loff_t offset , loff_t length) | ['inode', 'offset', 'length'] | int ext4_punch_hole(struct inode *inode, loff_t offset, loff_t length)
{
struct super_block *sb = inode->i_sb;
ext4_lblk_t first_block, stop_block;
struct address_space *mapping = inode->i_mapping;
loff_t first_block_offset, last_block_offset;
handle_t *handle;
unsigned int credits;
int ret = 0;
if (!S_ISREG(inode->i_mode))
return -EOPNOTSUPP;
trace_ext4_punch_hole(inode, offset, length, 0);
/*
* Write out all dirty pages to avoid race conditions
* Then release them.
*/
if (mapping->nrpages && mapping_tagged(mapping, PAGECACHE_TAG_DIRTY)) {
ret = filemap_write_and_wait_range(mapping, offset,
offset + length - 1);
if (ret)
return ret;
}
mutex_lock(&inode->i_mutex);
/* No need to punch hole beyond i_size */
if (offset >= inode->i_size)
goto out_mutex;
/*
* If the hole extends beyond i_size, set the hole
* to end after the page that contains i_size
*/
if (offset + length > inode->i_size) {
length = inode->i_size +
PAGE_CACHE_SIZE - (inode->i_size & (PAGE_CACHE_SIZE - 1)) -
offset;
}
if (offset & (sb->s_blocksize - 1) ||
(offset + length) & (sb->s_blocksize - 1)) {
/*
* Attach jinode to inode for jbd2 if we do any zeroing of
* partial block
*/
ret = ext4_inode_attach_jinode(inode);
if (ret < 0)
goto out_mutex;
}
first_block_offset = round_up(offset, sb->s_blocksize);
last_block_offset = round_down((offset + length), sb->s_blocksize) - 1;
/* Now release the pages and zero block aligned part of pages*/
if (last_block_offset > first_block_offset)
truncate_pagecache_range(inode, first_block_offset,
last_block_offset);
/* Wait all existing dio workers, newcomers will block on i_mutex */
ext4_inode_block_unlocked_dio(inode);
inode_dio_wait(inode);
if (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))
credits = ext4_writepage_trans_blocks(inode);
else
credits = ext4_blocks_for_truncate(inode);
handle = ext4_journal_start(inode, EXT4_HT_TRUNCATE, credits);
if (IS_ERR(handle)) {
ret = PTR_ERR(handle);
ext4_std_error(sb, ret);
goto out_dio;
}
ret = ext4_zero_partial_blocks(handle, inode, offset,
length);
if (ret)
goto out_stop;
first_block = (offset + sb->s_blocksize - 1) >>
EXT4_BLOCK_SIZE_BITS(sb);
stop_block = (offset + length) >> EXT4_BLOCK_SIZE_BITS(sb);
/* If there are no blocks to remove, return now */
if (first_block >= stop_block)
goto out_stop;
down_write(&EXT4_I(inode)->i_data_sem);
ext4_discard_preallocations(inode);
ret = ext4_es_remove_extent(inode, first_block,
stop_block - first_block);
if (ret) {
up_write(&EXT4_I(inode)->i_data_sem);
goto out_stop;
}
if (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))
ret = ext4_ext_remove_space(inode, first_block,
stop_block - 1);
else
ret = ext4_ind_remove_space(handle, inode, first_block,
stop_block);
up_write(&EXT4_I(inode)->i_data_sem);
if (IS_SYNC(inode))
ext4_handle_sync(handle);
/* Now release the pages again to reduce race window */
if (last_block_offset > first_block_offset)
truncate_pagecache_range(inode, first_block_offset,
last_block_offset);
inode->i_mtime = inode->i_ctime = ext4_current_time(inode);
ext4_mark_inode_dirty(handle, inode);
out_stop:
ext4_journal_stop(handle);
out_dio:
ext4_inode_resume_unlocked_dio(inode);
out_mutex:
mutex_unlock(&inode->i_mutex);
return ret;
} | 560 | True | 1 |
|
CVE-2015-8816 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | PHYSICAL | LOW | NONE | NONE | UNCHANGED | HIGH | HIGH | HIGH | 6.8 | MEDIUM | 0.9 | 5.9 | nan | [{'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1311589', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1311589', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e50293ef9775c5f1cf3fcc093037dd6a8c5684ea', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e50293ef9775c5f1cf3fcc093037dd6a8c5684ea', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.5', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.5', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2016/02/23/5', 'name': '[oss-security] 20160223 CVE Request: Linux kernel USB hub invalid memory access in hub_activate()', 'refsource': 'MLIST', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/e50293ef9775c5f1cf3fcc093037dd6a8c5684ea', 'name': 'https://github.com/torvalds/linux/commit/e50293ef9775c5f1cf3fcc093037dd6a8c5684ea', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'http://source.android.com/security/bulletin/2016-07-01.html', 'name': 'http://source.android.com/security/bulletin/2016-07-01.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00052.html', 'name': 'SUSE-SU-2016:1672', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00054.html', 'name': 'SUSE-SU-2016:1690', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00059.html', 'name': 'SUSE-SU-2016:1707', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.html', 'name': 'SUSE-SU-2016:1764', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html', 'name': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html', 'name': 'http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00009.html', 'name': 'SUSE-SU-2016:1995', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00016.html', 'name': 'SUSE-SU-2016:2002', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00003.html', 'name': 'SUSE-SU-2016:1961', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00026.html', 'name': 'SUSE-SU-2016:2014', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00019.html', 'name': 'SUSE-SU-2016:2006', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html', 'name': 'SUSE-SU-2016:2074', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00020.html', 'name': 'SUSE-SU-2016:2007', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00022.html', 'name': 'SUSE-SU-2016:2010', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.securityfocus.com/bid/83363', 'name': '83363', 'refsource': 'BID', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00015.html', 'name': 'SUSE-SU-2016:2001', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00008.html', 'name': 'SUSE-SU-2016:1994', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00018.html', 'name': 'SUSE-SU-2016:2005', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00021.html', 'name': 'SUSE-SU-2016:2009', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.debian.org/security/2016/dsa-3503', 'name': 'DSA-3503', 'refsource': 'DEBIAN', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00019.html', 'name': 'SUSE-SU-2016:1019', 'refsource': 'SUSE', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'NVD-CWE-Other'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:novell:suse_linux_enterprise_server:12.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:novell:suse_linux_enterprise_server:11:sp4:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:novell:suse_linux_enterprise_debuginfo:11:sp4:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:novell:suse_linux_enterprise_live_patching:12.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:novell:suse_linux_enterprise_real_time_extension:11:sp4:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:novell:suse_linux_enterprise_desktop:12.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:novell:suse_linux_enterprise_module_for_public_cloud:12:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:novell:suse_linux_enterprise_workstation_extension:12.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:novell:suse_linux_enterprise_software_development_kit:12.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:novell:suse_linux_enterprise_software_development_kit:11.0:sp4:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:novell:suse_linux_enterprise_real_time_extension:12:sp1:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:novell:suse_linux_enterprise_server:11:extra:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.4', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The hub_activate function in drivers/usb/core/hub.c in the Linux kernel before 4.3.5 does not properly maintain a hub-interface data structure, which allows physically proximate attackers to cause a denial of service (invalid memory access and system crash) or possibly have unspecified other impact by unplugging a USB hub device.'}] | 2016-12-03T03:14Z | 2016-04-27T17:59Z | Other | NVD is only using a subset of CWE for mapping instead of the entire CWE, and the weakness type is not covered by that subset. | Insufficient Information | https://nvd.nist.gov/vuln/categories | 0 | Alan Stern | 2015-12-16 13:32:38-05:00 | USB: fix invalid memory access in hub_activate()
Commit 8520f38099cc ("USB: change hub initialization sleeps to
delayed_work") changed the hub_activate() routine to make part of it
run in a workqueue. However, the commit failed to take a reference to
the usb_hub structure or to lock the hub interface while doing so. As
a result, if a hub is plugged in and quickly unplugged before the work
routine can run, the routine will try to access memory that has been
deallocated. Or, if the hub is unplugged while the routine is
running, the memory may be deallocated while it is in active use.
This patch fixes the problem by taking a reference to the usb_hub at
the start of hub_activate() and releasing it at the end (when the work
is finished), and by locking the hub interface while the work routine
is running. It also adds a check at the start of the routine to see
if the hub has already been disconnected, in which nothing should be
done.
Signed-off-by: Alan Stern <[email protected]>
Reported-by: Alexandru Cornea <[email protected]>
Tested-by: Alexandru Cornea <[email protected]>
Fixes: 8520f38099cc ("USB: change hub initialization sleeps to delayed_work")
CC: <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]> | e50293ef9775c5f1cf3fcc093037dd6a8c5684ea | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | hub_activate | hub_activate( struct usb_hub * hub , enum hub_activation_type type) | ['hub', 'type'] | static void hub_activate(struct usb_hub *hub, enum hub_activation_type type)
{
struct usb_device *hdev = hub->hdev;
struct usb_hcd *hcd;
int ret;
int port1;
int status;
bool need_debounce_delay = false;
unsigned delay;
/* Continue a partial initialization */
if (type == HUB_INIT2)
goto init2;
if (type == HUB_INIT3)
goto init3;
/* The superspeed hub except for root hub has to use Hub Depth
* value as an offset into the route string to locate the bits
* it uses to determine the downstream port number. So hub driver
* should send a set hub depth request to superspeed hub after
* the superspeed hub is set configuration in initialization or
* reset procedure.
*
* After a resume, port power should still be on.
* For any other type of activation, turn it on.
*/
if (type != HUB_RESUME) {
if (hdev->parent && hub_is_superspeed(hdev)) {
ret = usb_control_msg(hdev, usb_sndctrlpipe(hdev, 0),
HUB_SET_DEPTH, USB_RT_HUB,
hdev->level - 1, 0, NULL, 0,
USB_CTRL_SET_TIMEOUT);
if (ret < 0)
dev_err(hub->intfdev,
"set hub depth failed\n");
}
/* Speed up system boot by using a delayed_work for the
* hub's initial power-up delays. This is pretty awkward
* and the implementation looks like a home-brewed sort of
* setjmp/longjmp, but it saves at least 100 ms for each
* root hub (assuming usbcore is compiled into the kernel
* rather than as a module). It adds up.
*
* This can't be done for HUB_RESUME or HUB_RESET_RESUME
* because for those activation types the ports have to be
* operational when we return. In theory this could be done
* for HUB_POST_RESET, but it's easier not to.
*/
if (type == HUB_INIT) {
delay = hub_power_on_good_delay(hub);
hub_power_on(hub, false);
INIT_DELAYED_WORK(&hub->init_work, hub_init_func2);
queue_delayed_work(system_power_efficient_wq,
&hub->init_work,
msecs_to_jiffies(delay));
/* Suppress autosuspend until init is done */
usb_autopm_get_interface_no_resume(
to_usb_interface(hub->intfdev));
return; /* Continues at init2: below */
} else if (type == HUB_RESET_RESUME) {
/* The internal host controller state for the hub device
* may be gone after a host power loss on system resume.
* Update the device's info so the HW knows it's a hub.
*/
hcd = bus_to_hcd(hdev->bus);
if (hcd->driver->update_hub_device) {
ret = hcd->driver->update_hub_device(hcd, hdev,
&hub->tt, GFP_NOIO);
if (ret < 0) {
dev_err(hub->intfdev, "Host not "
"accepting hub info "
"update.\n");
dev_err(hub->intfdev, "LS/FS devices "
"and hubs may not work "
"under this hub\n.");
}
}
hub_power_on(hub, true);
} else {
hub_power_on(hub, true);
}
}
init2:
/*
* Check each port and set hub->change_bits to let hub_wq know
* which ports need attention.
*/
for (port1 = 1; port1 <= hdev->maxchild; ++port1) {
struct usb_port *port_dev = hub->ports[port1 - 1];
struct usb_device *udev = port_dev->child;
u16 portstatus, portchange;
portstatus = portchange = 0;
status = hub_port_status(hub, port1, &portstatus, &portchange);
if (udev || (portstatus & USB_PORT_STAT_CONNECTION))
dev_dbg(&port_dev->dev, "status %04x change %04x\n",
portstatus, portchange);
/*
* After anything other than HUB_RESUME (i.e., initialization
* or any sort of reset), every port should be disabled.
* Unconnected ports should likewise be disabled (paranoia),
* and so should ports for which we have no usb_device.
*/
if ((portstatus & USB_PORT_STAT_ENABLE) && (
type != HUB_RESUME ||
!(portstatus & USB_PORT_STAT_CONNECTION) ||
!udev ||
udev->state == USB_STATE_NOTATTACHED)) {
/*
* USB3 protocol ports will automatically transition
* to Enabled state when detect an USB3.0 device attach.
* Do not disable USB3 protocol ports, just pretend
* power was lost
*/
portstatus &= ~USB_PORT_STAT_ENABLE;
if (!hub_is_superspeed(hdev))
usb_clear_port_feature(hdev, port1,
USB_PORT_FEAT_ENABLE);
}
/* Clear status-change flags; we'll debounce later */
if (portchange & USB_PORT_STAT_C_CONNECTION) {
need_debounce_delay = true;
usb_clear_port_feature(hub->hdev, port1,
USB_PORT_FEAT_C_CONNECTION);
}
if (portchange & USB_PORT_STAT_C_ENABLE) {
need_debounce_delay = true;
usb_clear_port_feature(hub->hdev, port1,
USB_PORT_FEAT_C_ENABLE);
}
if (portchange & USB_PORT_STAT_C_RESET) {
need_debounce_delay = true;
usb_clear_port_feature(hub->hdev, port1,
USB_PORT_FEAT_C_RESET);
}
if ((portchange & USB_PORT_STAT_C_BH_RESET) &&
hub_is_superspeed(hub->hdev)) {
need_debounce_delay = true;
usb_clear_port_feature(hub->hdev, port1,
USB_PORT_FEAT_C_BH_PORT_RESET);
}
/* We can forget about a "removed" device when there's a
* physical disconnect or the connect status changes.
*/
if (!(portstatus & USB_PORT_STAT_CONNECTION) ||
(portchange & USB_PORT_STAT_C_CONNECTION))
clear_bit(port1, hub->removed_bits);
if (!udev || udev->state == USB_STATE_NOTATTACHED) {
/* Tell hub_wq to disconnect the device or
* check for a new connection
*/
if (udev || (portstatus & USB_PORT_STAT_CONNECTION) ||
(portstatus & USB_PORT_STAT_OVERCURRENT))
set_bit(port1, hub->change_bits);
} else if (portstatus & USB_PORT_STAT_ENABLE) {
bool port_resumed = (portstatus &
USB_PORT_STAT_LINK_STATE) ==
USB_SS_PORT_LS_U0;
/* The power session apparently survived the resume.
* If there was an overcurrent or suspend change
* (i.e., remote wakeup request), have hub_wq
* take care of it. Look at the port link state
* for USB 3.0 hubs, since they don't have a suspend
* change bit, and they don't set the port link change
* bit on device-initiated resume.
*/
if (portchange || (hub_is_superspeed(hub->hdev) &&
port_resumed))
set_bit(port1, hub->change_bits);
} else if (udev->persist_enabled) {
#ifdef CONFIG_PM
udev->reset_resume = 1;
#endif
/* Don't set the change_bits when the device
* was powered off.
*/
if (test_bit(port1, hub->power_bits))
set_bit(port1, hub->change_bits);
} else {
/* The power session is gone; tell hub_wq */
usb_set_device_state(udev, USB_STATE_NOTATTACHED);
set_bit(port1, hub->change_bits);
}
}
/* If no port-status-change flags were set, we don't need any
* debouncing. If flags were set we can try to debounce the
* ports all at once right now, instead of letting hub_wq do them
* one at a time later on.
*
* If any port-status changes do occur during this delay, hub_wq
* will see them later and handle them normally.
*/
if (need_debounce_delay) {
delay = HUB_DEBOUNCE_STABLE;
/* Don't do a long sleep inside a workqueue routine */
if (type == HUB_INIT2) {
INIT_DELAYED_WORK(&hub->init_work, hub_init_func3);
queue_delayed_work(system_power_efficient_wq,
&hub->init_work,
msecs_to_jiffies(delay));
return; /* Continues at init3: below */
} else {
msleep(delay);
}
}
init3:
hub->quiescing = 0;
status = usb_submit_urb(hub->urb, GFP_NOIO);
if (status < 0)
dev_err(hub->intfdev, "activate --> %d\n", status);
if (hub->has_indicators && blinkenlights)
queue_delayed_work(system_power_efficient_wq,
&hub->leds, LED_CYCLE_PERIOD);
/* Scan all ports that need attention */
kick_hub_wq(hub);
/* Allow autosuspend if it was suppressed */
if (type <= HUB_INIT3)
usb_autopm_put_interface_async(to_usb_interface(hub->intfdev));
} | 820 | True | 1 |
|
CVE-2015-7550 | False | False | False | nan | AV:L/AC:L/Au:N/C:N/I:N/A:C | LOCAL | LOW | NONE | NONE | NONE | COMPLETE | 4.9 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | LOCAL | LOW | LOW | NONE | UNCHANGED | NONE | NONE | HIGH | 5.5 | MEDIUM | 1.8 | 3.6 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.4', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.4', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/b4a1b4f5047e4f54e194681125c74c0aa64d637d', 'name': 'https://github.com/torvalds/linux/commit/b4a1b4f5047e4f54e194681125c74c0aa64d637d', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://security-tracker.debian.org/tracker/CVE-2015-7550', 'name': 'https://security-tracker.debian.org/tracker/CVE-2015-7550', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1291197', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1291197', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b4a1b4f5047e4f54e194681125c74c0aa64d637d', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b4a1b4f5047e4f54e194681125c74c0aa64d637d', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html', 'name': 'SUSE-SU-2016:2074', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.securityfocus.com/bid/79903', 'name': '79903', 'refsource': 'BID', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.html', 'name': 'SUSE-SU-2016:0911', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html', 'name': 'SUSE-SU-2016:1102', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2911-1', 'name': 'USN-2911-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2890-1', 'name': 'USN-2890-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2890-3', 'name': 'USN-2890-3', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2890-2', 'name': 'USN-2890-2', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2888-1', 'name': 'USN-2888-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2911-2', 'name': 'USN-2911-2', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.debian.org/security/2016/dsa-3434', 'name': 'DSA-3434', 'refsource': 'DEBIAN', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-362'}, {'lang': 'en', 'value': 'NVD-CWE-Other'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.3', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The keyctl_read_key function in security/keys/keyctl.c in the Linux kernel before 4.3.4 does not properly use a semaphore, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted application that leverages a race condition between keyctl_revoke and keyctl_read calls.'}] | 2017-11-04T01:29Z | 2016-02-08T03:59Z | Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') | The program contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. |
This can have security implications when the expected synchronization is in security-critical code, such as recording whether a user is authenticated or modifying important state information that should not be influenced by an outsider.
A race condition occurs within concurrent environments, and is effectively a property of a code sequence. Depending on the context, a code sequence may be in the form of a function call, a small number of instructions, a series of program invocations, etc.
A race condition violates these properties, which are closely related:
Exclusivity - the code sequence is given exclusive access to the shared resource, i.e., no other code sequence can modify properties of the shared resource before the original sequence has completed execution.
Atomicity - the code sequence is behaviorally atomic, i.e., no other thread or process can concurrently execute the same sequence of instructions (or a subset) against the same resource.
A race condition exists when an "interfering code sequence" can still access the shared resource, violating exclusivity. Programmers may assume that certain code sequences execute too quickly to be affected by an interfering code sequence; when they are not, this violates atomicity. For example, the single "x++" statement may appear atomic at the code layer, but it is actually non-atomic at the instruction layer, since it involves a read (the original value of x), followed by a computation (x+1), followed by a write (save the result to x).
The interfering code sequence could be "trusted" or "untrusted." A trusted interfering code sequence occurs within the program; it cannot be modified by the attacker, and it can only be invoked indirectly. An untrusted interfering code sequence can be authored directly by the attacker, and typically it is external to the vulnerable program.
| https://cwe.mitre.org/data/definitions/362.html | 0 | David Howells | 2015-12-18 01:34:26+00:00 | KEYS: Fix race between read and revoke
This fixes CVE-2015-7550.
There's a race between keyctl_read() and keyctl_revoke(). If the revoke
happens between keyctl_read() checking the validity of a key and the key's
semaphore being taken, then the key type read method will see a revoked key.
This causes a problem for the user-defined key type because it assumes in
its read method that there will always be a payload in a non-revoked key
and doesn't check for a NULL pointer.
Fix this by making keyctl_read() check the validity of a key after taking
semaphore instead of before.
I think the bug was introduced with the original keyrings code.
This was discovered by a multithreaded test program generated by syzkaller
(http://github.com/google/syzkaller). Here's a cleaned up version:
#include <sys/types.h>
#include <keyutils.h>
#include <pthread.h>
void *thr0(void *arg)
{
key_serial_t key = (unsigned long)arg;
keyctl_revoke(key);
return 0;
}
void *thr1(void *arg)
{
key_serial_t key = (unsigned long)arg;
char buffer[16];
keyctl_read(key, buffer, 16);
return 0;
}
int main()
{
key_serial_t key = add_key("user", "%", "foo", 3, KEY_SPEC_USER_KEYRING);
pthread_t th[5];
pthread_create(&th[0], 0, thr0, (void *)(unsigned long)key);
pthread_create(&th[1], 0, thr1, (void *)(unsigned long)key);
pthread_create(&th[2], 0, thr0, (void *)(unsigned long)key);
pthread_create(&th[3], 0, thr1, (void *)(unsigned long)key);
pthread_join(th[0], 0);
pthread_join(th[1], 0);
pthread_join(th[2], 0);
pthread_join(th[3], 0);
return 0;
}
Build as:
cc -o keyctl-race keyctl-race.c -lkeyutils -lpthread
Run as:
while keyctl-race; do :; done
as it may need several iterations to crash the kernel. The crash can be
summarised as:
BUG: unable to handle kernel NULL pointer dereference at 0000000000000010
IP: [<ffffffff81279b08>] user_read+0x56/0xa3
...
Call Trace:
[<ffffffff81276aa9>] keyctl_read_key+0xb6/0xd7
[<ffffffff81277815>] SyS_keyctl+0x83/0xe0
[<ffffffff815dbb97>] entry_SYSCALL_64_fastpath+0x12/0x6f
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: David Howells <[email protected]>
Tested-by: Dmitry Vyukov <[email protected]>
Cc: [email protected]
Signed-off-by: James Morris <[email protected]> | b4a1b4f5047e4f54e194681125c74c0aa64d637d | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | keyctl_read_key | keyctl_read_key( key_serial_t keyid , char __user * buffer , size_t buflen) | ['keyid', 'buffer', 'buflen'] | long keyctl_read_key(key_serial_t keyid, char __user *buffer, size_t buflen)
{
struct key *key;
key_ref_t key_ref;
long ret;
/* find the key first */
key_ref = lookup_user_key(keyid, 0, 0);
if (IS_ERR(key_ref)) {
ret = -ENOKEY;
goto error;
}
key = key_ref_to_ptr(key_ref);
/* see if we can read it directly */
ret = key_permission(key_ref, KEY_NEED_READ);
if (ret == 0)
goto can_read_key;
if (ret != -EACCES)
goto error;
/* we can't; see if it's searchable from this process's keyrings
* - we automatically take account of the fact that it may be
* dangling off an instantiation key
*/
if (!is_key_possessed(key_ref)) {
ret = -EACCES;
goto error2;
}
/* the key is probably readable - now try to read it */
can_read_key:
ret = key_validate(key);
if (ret == 0) {
ret = -EOPNOTSUPP;
if (key->type->read) {
/* read the data with the semaphore held (since we
* might sleep) */
down_read(&key->sem);
ret = key->type->read(key, buffer, buflen);
up_read(&key->sem);
}
}
error2:
key_put(key);
error:
return ret;
} | 182 | True | 1 |
|
CVE-2015-7550 | False | False | False | nan | AV:L/AC:L/Au:N/C:N/I:N/A:C | LOCAL | LOW | NONE | NONE | NONE | COMPLETE | 4.9 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | LOCAL | LOW | LOW | NONE | UNCHANGED | NONE | NONE | HIGH | 5.5 | MEDIUM | 1.8 | 3.6 | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.4', 'name': 'http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.4', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/b4a1b4f5047e4f54e194681125c74c0aa64d637d', 'name': 'https://github.com/torvalds/linux/commit/b4a1b4f5047e4f54e194681125c74c0aa64d637d', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://security-tracker.debian.org/tracker/CVE-2015-7550', 'name': 'https://security-tracker.debian.org/tracker/CVE-2015-7550', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1291197', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1291197', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b4a1b4f5047e4f54e194681125c74c0aa64d637d', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b4a1b4f5047e4f54e194681125c74c0aa64d637d', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html', 'name': 'SUSE-SU-2016:2074', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.securityfocus.com/bid/79903', 'name': '79903', 'refsource': 'BID', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.html', 'name': 'SUSE-SU-2016:0911', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html', 'name': 'SUSE-SU-2016:1102', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2911-1', 'name': 'USN-2911-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2890-1', 'name': 'USN-2890-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2890-3', 'name': 'USN-2890-3', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2890-2', 'name': 'USN-2890-2', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2888-1', 'name': 'USN-2888-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2911-2', 'name': 'USN-2911-2', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.debian.org/security/2016/dsa-3434', 'name': 'DSA-3434', 'refsource': 'DEBIAN', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-362'}, {'lang': 'en', 'value': 'NVD-CWE-Other'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.3.3', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The keyctl_read_key function in security/keys/keyctl.c in the Linux kernel before 4.3.4 does not properly use a semaphore, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted application that leverages a race condition between keyctl_revoke and keyctl_read calls.'}] | 2017-11-04T01:29Z | 2016-02-08T03:59Z | Other | NVD is only using a subset of CWE for mapping instead of the entire CWE, and the weakness type is not covered by that subset. | Insufficient Information | https://nvd.nist.gov/vuln/categories | 0 | David Howells | 2015-12-18 01:34:26+00:00 | KEYS: Fix race between read and revoke
This fixes CVE-2015-7550.
There's a race between keyctl_read() and keyctl_revoke(). If the revoke
happens between keyctl_read() checking the validity of a key and the key's
semaphore being taken, then the key type read method will see a revoked key.
This causes a problem for the user-defined key type because it assumes in
its read method that there will always be a payload in a non-revoked key
and doesn't check for a NULL pointer.
Fix this by making keyctl_read() check the validity of a key after taking
semaphore instead of before.
I think the bug was introduced with the original keyrings code.
This was discovered by a multithreaded test program generated by syzkaller
(http://github.com/google/syzkaller). Here's a cleaned up version:
#include <sys/types.h>
#include <keyutils.h>
#include <pthread.h>
void *thr0(void *arg)
{
key_serial_t key = (unsigned long)arg;
keyctl_revoke(key);
return 0;
}
void *thr1(void *arg)
{
key_serial_t key = (unsigned long)arg;
char buffer[16];
keyctl_read(key, buffer, 16);
return 0;
}
int main()
{
key_serial_t key = add_key("user", "%", "foo", 3, KEY_SPEC_USER_KEYRING);
pthread_t th[5];
pthread_create(&th[0], 0, thr0, (void *)(unsigned long)key);
pthread_create(&th[1], 0, thr1, (void *)(unsigned long)key);
pthread_create(&th[2], 0, thr0, (void *)(unsigned long)key);
pthread_create(&th[3], 0, thr1, (void *)(unsigned long)key);
pthread_join(th[0], 0);
pthread_join(th[1], 0);
pthread_join(th[2], 0);
pthread_join(th[3], 0);
return 0;
}
Build as:
cc -o keyctl-race keyctl-race.c -lkeyutils -lpthread
Run as:
while keyctl-race; do :; done
as it may need several iterations to crash the kernel. The crash can be
summarised as:
BUG: unable to handle kernel NULL pointer dereference at 0000000000000010
IP: [<ffffffff81279b08>] user_read+0x56/0xa3
...
Call Trace:
[<ffffffff81276aa9>] keyctl_read_key+0xb6/0xd7
[<ffffffff81277815>] SyS_keyctl+0x83/0xe0
[<ffffffff815dbb97>] entry_SYSCALL_64_fastpath+0x12/0x6f
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: David Howells <[email protected]>
Tested-by: Dmitry Vyukov <[email protected]>
Cc: [email protected]
Signed-off-by: James Morris <[email protected]> | b4a1b4f5047e4f54e194681125c74c0aa64d637d | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | keyctl_read_key | keyctl_read_key( key_serial_t keyid , char __user * buffer , size_t buflen) | ['keyid', 'buffer', 'buflen'] | long keyctl_read_key(key_serial_t keyid, char __user *buffer, size_t buflen)
{
struct key *key;
key_ref_t key_ref;
long ret;
/* find the key first */
key_ref = lookup_user_key(keyid, 0, 0);
if (IS_ERR(key_ref)) {
ret = -ENOKEY;
goto error;
}
key = key_ref_to_ptr(key_ref);
/* see if we can read it directly */
ret = key_permission(key_ref, KEY_NEED_READ);
if (ret == 0)
goto can_read_key;
if (ret != -EACCES)
goto error;
/* we can't; see if it's searchable from this process's keyrings
* - we automatically take account of the fact that it may be
* dangling off an instantiation key
*/
if (!is_key_possessed(key_ref)) {
ret = -EACCES;
goto error2;
}
/* the key is probably readable - now try to read it */
can_read_key:
ret = key_validate(key);
if (ret == 0) {
ret = -EOPNOTSUPP;
if (key->type->read) {
/* read the data with the semaphore held (since we
* might sleep) */
down_read(&key->sem);
ret = key->type->read(key, buffer, buflen);
up_read(&key->sem);
}
}
error2:
key_put(key);
error:
return ret;
} | 182 | True | 1 |
|
CVE-2015-7513 | False | False | False | nan | AV:L/AC:L/Au:N/C:N/I:N/A:C | LOCAL | LOW | NONE | NONE | NONE | COMPLETE | 4.9 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H | LOCAL | LOW | LOW | NONE | CHANGED | NONE | NONE | HIGH | 6.5 | MEDIUM | 2.0 | 4.0 | nan | [{'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1284847', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1284847', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0185604c2d82c560dab2f2933a18f797e74ab5a8', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0185604c2d82c560dab2f2933a18f797e74ab5a8', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/0185604c2d82c560dab2f2933a18f797e74ab5a8', 'name': 'https://github.com/torvalds/linux/commit/0185604c2d82c560dab2f2933a18f797e74ab5a8', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2016/01/07/2', 'name': '[oss-security] 20160107 CVE-2015-7513 Kernel: kvm: divide by zero issue leads to DoS', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2889-1', 'name': 'USN-2889-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176484.html', 'name': 'FEDORA-2016-5d43766e33', 'refsource': 'FEDORA', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2890-1', 'name': 'USN-2890-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2890-3', 'name': 'USN-2890-3', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2887-2', 'name': 'USN-2887-2', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2890-2', 'name': 'USN-2890-2', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2887-1', 'name': 'USN-2887-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.fedoraproject.org/pipermail/package-announce/2016-January/175792.html', 'name': 'FEDORA-2016-26e19f042a', 'refsource': 'FEDORA', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.fedoraproject.org/pipermail/package-announce/2016-January/176194.html', 'name': 'FEDORA-2016-b59fd603be', 'refsource': 'FEDORA', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2888-1', 'name': 'USN-2888-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2886-1', 'name': 'USN-2886-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2889-2', 'name': 'USN-2889-2', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/79901', 'name': '79901', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://www.securitytracker.com/id/1034602', 'name': '1034602', 'refsource': 'SECTRACK', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://www.debian.org/security/2016/dsa-3434', 'name': 'DSA-3434', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'CWE-369'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.4:rc6:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.4:rc5:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.4:rc4:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.4:rc3:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.4:rc2:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.4:rc1:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.4:-:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndExcluding': '4.4', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'arch/x86/kvm/x86.c in the Linux kernel before 4.4 does not reset the PIT counter values during state restoration, which allows guest OS users to cause a denial of service (divide-by-zero error and host OS crash) via a zero value, related to the kvm_vm_ioctl_set_pit and kvm_vm_ioctl_set_pit2 functions.'}] | 2021-12-10T20:04Z | 2016-02-08T03:59Z | Divide By Zero | The product divides a value by zero. | This weakness typically occurs when an unexpected value is provided to the product, or if an error occurs that is not properly detected. It frequently occurs in calculations involving physical dimensions such as size, length, width, and height.
| https://cwe.mitre.org/data/definitions/369.html | 0 | Andrew Honig | 2015-11-18 14:50:23-08:00 | KVM: x86: Reload pit counters for all channels when restoring state
Currently if userspace restores the pit counters with a count of 0
on channels 1 or 2 and the guest attempts to read the count on those
channels, then KVM will perform a mod of 0 and crash. This will ensure
that 0 values are converted to 65536 as per the spec.
This is CVE-2015-7513.
Signed-off-by: Andy Honig <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]> | 0185604c2d82c560dab2f2933a18f797e74ab5a8 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | kvm_vm_ioctl_set_pit | kvm_vm_ioctl_set_pit( struct kvm * kvm , struct kvm_pit_state * ps) | ['kvm', 'ps'] | static int kvm_vm_ioctl_set_pit(struct kvm *kvm, struct kvm_pit_state *ps)
{
mutex_lock(&kvm->arch.vpit->pit_state.lock);
memcpy(&kvm->arch.vpit->pit_state, ps, sizeof(struct kvm_pit_state));
kvm_pit_load_count(kvm, 0, ps->channels[0].count, 0);
mutex_unlock(&kvm->arch.vpit->pit_state.lock);
return 0;
} | 83 | True | 1 |
|
CVE-2015-7513 | False | False | False | nan | AV:L/AC:L/Au:N/C:N/I:N/A:C | LOCAL | LOW | NONE | NONE | NONE | COMPLETE | 4.9 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H | LOCAL | LOW | LOW | NONE | CHANGED | NONE | NONE | HIGH | 6.5 | MEDIUM | 2.0 | 4.0 | nan | [{'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1284847', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1284847', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0185604c2d82c560dab2f2933a18f797e74ab5a8', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0185604c2d82c560dab2f2933a18f797e74ab5a8', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/0185604c2d82c560dab2f2933a18f797e74ab5a8', 'name': 'https://github.com/torvalds/linux/commit/0185604c2d82c560dab2f2933a18f797e74ab5a8', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2016/01/07/2', 'name': '[oss-security] 20160107 CVE-2015-7513 Kernel: kvm: divide by zero issue leads to DoS', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2889-1', 'name': 'USN-2889-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176484.html', 'name': 'FEDORA-2016-5d43766e33', 'refsource': 'FEDORA', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2890-1', 'name': 'USN-2890-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2890-3', 'name': 'USN-2890-3', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2887-2', 'name': 'USN-2887-2', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2890-2', 'name': 'USN-2890-2', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2887-1', 'name': 'USN-2887-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.fedoraproject.org/pipermail/package-announce/2016-January/175792.html', 'name': 'FEDORA-2016-26e19f042a', 'refsource': 'FEDORA', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.fedoraproject.org/pipermail/package-announce/2016-January/176194.html', 'name': 'FEDORA-2016-b59fd603be', 'refsource': 'FEDORA', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2888-1', 'name': 'USN-2888-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2886-1', 'name': 'USN-2886-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2889-2', 'name': 'USN-2889-2', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/79901', 'name': '79901', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://www.securitytracker.com/id/1034602', 'name': '1034602', 'refsource': 'SECTRACK', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://www.debian.org/security/2016/dsa-3434', 'name': 'DSA-3434', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'CWE-369'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.4:rc6:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.4:rc5:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.4:rc4:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.4:rc3:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.4:rc2:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.4:rc1:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:4.4:-:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndExcluding': '4.4', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'arch/x86/kvm/x86.c in the Linux kernel before 4.4 does not reset the PIT counter values during state restoration, which allows guest OS users to cause a denial of service (divide-by-zero error and host OS crash) via a zero value, related to the kvm_vm_ioctl_set_pit and kvm_vm_ioctl_set_pit2 functions.'}] | 2021-12-10T20:04Z | 2016-02-08T03:59Z | Divide By Zero | The product divides a value by zero. | This weakness typically occurs when an unexpected value is provided to the product, or if an error occurs that is not properly detected. It frequently occurs in calculations involving physical dimensions such as size, length, width, and height.
| https://cwe.mitre.org/data/definitions/369.html | 0 | Andrew Honig | 2015-11-18 14:50:23-08:00 | KVM: x86: Reload pit counters for all channels when restoring state
Currently if userspace restores the pit counters with a count of 0
on channels 1 or 2 and the guest attempts to read the count on those
channels, then KVM will perform a mod of 0 and crash. This will ensure
that 0 values are converted to 65536 as per the spec.
This is CVE-2015-7513.
Signed-off-by: Andy Honig <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]> | 0185604c2d82c560dab2f2933a18f797e74ab5a8 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | kvm_vm_ioctl_set_pit2 | kvm_vm_ioctl_set_pit2( struct kvm * kvm , struct kvm_pit_state2 * ps) | ['kvm', 'ps'] | static int kvm_vm_ioctl_set_pit2(struct kvm *kvm, struct kvm_pit_state2 *ps)
{
int start = 0;
u32 prev_legacy, cur_legacy;
mutex_lock(&kvm->arch.vpit->pit_state.lock);
prev_legacy = kvm->arch.vpit->pit_state.flags & KVM_PIT_FLAGS_HPET_LEGACY;
cur_legacy = ps->flags & KVM_PIT_FLAGS_HPET_LEGACY;
if (!prev_legacy && cur_legacy)
start = 1;
memcpy(&kvm->arch.vpit->pit_state.channels, &ps->channels,
sizeof(kvm->arch.vpit->pit_state.channels));
kvm->arch.vpit->pit_state.flags = ps->flags;
kvm_pit_load_count(kvm, 0, kvm->arch.vpit->pit_state.channels[0].count, start);
mutex_unlock(&kvm->arch.vpit->pit_state.lock);
return 0;
} | 158 | True | 1 |
|
CVE-2015-8812 | False | False | False | False | AV:N/AC:L/Au:N/C:C/I:C/A:C | NETWORK | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 10.0 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | NETWORK | LOW | NONE | NONE | UNCHANGED | HIGH | HIGH | HIGH | 9.8 | CRITICAL | 3.9 | 5.9 | nan | [{'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1303532', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1303532', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking']}, {'url': 'http://www.openwall.com/lists/oss-security/2016/02/11/1', 'name': '[oss-security] 20160211 Linux kernel: Flaw in CXGB3 driver.', 'refsource': 'MLIST', 'tags': ['Release Notes']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=67f1aee6f45059fd6b0f5b0ecb2c97ad0451f6b3', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=67f1aee6f45059fd6b0f5b0ecb2c97ad0451f6b3', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/67f1aee6f45059fd6b0f5b0ecb2c97ad0451f6b3', 'name': 'https://github.com/torvalds/linux/commit/67f1aee6f45059fd6b0f5b0ecb2c97ad0451f6b3', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.html', 'name': 'SUSE-SU-2016:1764', 'refsource': 'SUSE', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html', 'name': 'SUSE-SU-2016:2074', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.securityfocus.com/bid/83218', 'name': '83218', 'refsource': 'BID', 'tags': []}, {'url': 'http://www.debian.org/security/2016/dsa-3503', 'name': 'DSA-3503', 'refsource': 'DEBIAN', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2967-1', 'name': 'USN-2967-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2967-2', 'name': 'USN-2967-2', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00015.html', 'name': 'openSUSE-SU-2016:1008', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00032.html', 'name': 'SUSE-SU-2016:1039', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00029.html', 'name': 'SUSE-SU-2016:1035', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00027.html', 'name': 'SUSE-SU-2016:1033', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2946-2', 'name': 'USN-2946-2', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00036.html', 'name': 'SUSE-SU-2016:1045', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00034.html', 'name': 'SUSE-SU-2016:1041', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00030.html', 'name': 'SUSE-SU-2016:1037', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2947-3', 'name': 'USN-2947-3', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2948-2', 'name': 'USN-2948-2', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00037.html', 'name': 'SUSE-SU-2016:1046', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2947-1', 'name': 'USN-2947-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00025.html', 'name': 'SUSE-SU-2016:1031', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2949-1', 'name': 'USN-2949-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00033.html', 'name': 'SUSE-SU-2016:1040', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00028.html', 'name': 'SUSE-SU-2016:1034', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2947-2', 'name': 'USN-2947-2', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2946-1', 'name': 'USN-2946-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00031.html', 'name': 'SUSE-SU-2016:1038', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00019.html', 'name': 'SUSE-SU-2016:1019', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.html', 'name': 'SUSE-SU-2016:0911', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00026.html', 'name': 'SUSE-SU-2016:1032', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html', 'name': 'SUSE-SU-2016:1102', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2948-1', 'name': 'USN-2948-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2584.html', 'name': 'RHSA-2016:2584', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-2574.html', 'name': 'RHSA-2016:2574', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'NVD-CWE-Other'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:novell:suse_linux_enterprise_real_time_extension:12:sp1:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '4.4.8', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'drivers/infiniband/hw/cxgb3/iwch_cm.c in the Linux kernel before 4.5 does not properly identify error conditions, which allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free) via crafted packets.'}] | 2018-01-05T02:30Z | 2016-04-27T17:59Z | Other | NVD is only using a subset of CWE for mapping instead of the entire CWE, and the weakness type is not covered by that subset. | Insufficient Information | https://nvd.nist.gov/vuln/categories | 0 | Hariprasad S | 2015-12-11 13:47:17+05:18 | iw_cxgb3: Fix incorrectly returning error on success
The cxgb3_*_send() functions return NET_XMIT_ values, which are
positive integers values. So don't treat positive return values
as an error.
Signed-off-by: Steve Wise <[email protected]>
Signed-off-by: Hariprasad Shenai <[email protected]>
Signed-off-by: Doug Ledford <[email protected]> | 67f1aee6f45059fd6b0f5b0ecb2c97ad0451f6b3 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | iwch_cxgb3_ofld_send | iwch_cxgb3_ofld_send( struct t3cdev * tdev , struct sk_buff * skb) | ['tdev', 'skb'] | int iwch_cxgb3_ofld_send(struct t3cdev *tdev, struct sk_buff *skb)
{
int error = 0;
struct cxio_rdev *rdev;
rdev = (struct cxio_rdev *)tdev->ulp;
if (cxio_fatal_error(rdev)) {
kfree_skb(skb);
return -EIO;
}
error = cxgb3_ofld_send(tdev, skb);
if (error < 0)
kfree_skb(skb);
return error;
} | 76 | True | 1 |
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