Description
In the Linux kernel, the following vulnerability has been resolved: phonet: pep: do not write beyond optlen in getsockopt pep_getsockopt() clamps the reported length to the caller's buffer with min_t(), but then stores the value with put_user(val, (int __user *) optval), which always writes sizeof(int) bytes. A getsockopt() call with an optlen smaller than sizeof(int) thus reports the clamped length yet writes a full int, one to three bytes past the user buffer. Write the value with copy_to_user() bounded by len, so at most optlen bytes are copied, matching the length reported back to userspace.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
02a47617cdce440f60c71a51f3a93f9f5fcc5a7a to < 6054fed6bad08b6d03973e8ffca7f0c9394d1c30affected02a47617cdce440f60c71a51f3a93f9f5fcc5a7a to < eac733a0b6fe0a52d91f9f623425735ed50ac6c2affected02a47617cdce440f60c71a51f3a93f9f5fcc5a7a to < 95e0ed2439dd1792eb454c68ae8d10f30ffe3bffaffected02a47617cdce440f60c71a51f3a93f9f5fcc5a7a to < 056eea1a2068ad2fb7c3093c5f1095268f87d0c7affected02a47617cdce440f60c71a51f3a93f9f5fcc5a7a to < 1bf499e438da80455e258049bce60ffb3a53f3faaffected02a47617cdce440f60c71a51f3a93f9f5fcc5a7a to < c4487e4d5309de587479ecc2f5173b49586f46f4affected02a47617cdce440f60c71a51f3a93f9f5fcc5a7a to < f97022fefe6eb06ee18549d603420440f2959802affected02a47617cdce440f60c71a51f3a93f9f5fcc5a7a to < 77e5eb0e192aec6710c03ca8144582fd2af36ca4affected
Linux Linux
Default version status: affected
2.6.28affected0 to < 2.6.28unaffected5.10.270 to ≤ 5.10.*unaffected5.15.221 to ≤ 5.15.*unaffected6.1.188 to ≤ 6.1.*unaffected6.6.157 to ≤ 6.6.*unaffected6.12.110 to ≤ 6.12.*unaffected6.18.52 to ≤ 6.18.*unaffected7.2.6 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/6054fed6bad08b6d03973e8ffca7f0c9394d1c30 ↗
- https://git.kernel.org/stable/c/eac733a0b6fe0a52d91f9f623425735ed50ac6c2 ↗
- https://git.kernel.org/stable/c/95e0ed2439dd1792eb454c68ae8d10f30ffe3bff ↗
- https://git.kernel.org/stable/c/056eea1a2068ad2fb7c3093c5f1095268f87d0c7 ↗
- https://git.kernel.org/stable/c/1bf499e438da80455e258049bce60ffb3a53f3fa ↗
- https://git.kernel.org/stable/c/c4487e4d5309de587479ecc2f5173b49586f46f4 ↗
- https://git.kernel.org/stable/c/f97022fefe6eb06ee18549d603420440f2959802 ↗
- https://git.kernel.org/stable/c/77e5eb0e192aec6710c03ca8144582fd2af36ca4 ↗