Description
In the Linux kernel, the following vulnerability has been resolved: net/sched: mqprio: fix stack out-of-bounds write in tc entry parsing TCA_MQPRIO_TC_ENTRY_INDEX is validated using NLA_POLICY_MAX(NLA_U32, TC_QOPT_MAX_QUEUE), which allows the value TC_QOPT_MAX_QUEUE (16). This leads to a 4-byte out-of-bounds stack write in the fp[] array, which only has room for 16 elements (0–15). Fix this by changing the policy to allow only up to TC_QOPT_MAX_QUEUE - 1.
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
f62af20bed2d9e824f51cfc97ff01bc261f40e58 to < 39491e859fd494d0b51adc5c7d54c8a7dcf1d198affectedf62af20bed2d9e824f51cfc97ff01bc261f40e58 to < d00e4125680f7074c4f42ce3c297336f23128e70affectedf62af20bed2d9e824f51cfc97ff01bc261f40e58 to < 66fc2ebdd9d5dd6e5a9c7edeace5a61a0ab2cd86affectedf62af20bed2d9e824f51cfc97ff01bc261f40e58 to < f1a9dbcb7d17bf0abb325cdc984957cfabc59693affectedf62af20bed2d9e824f51cfc97ff01bc261f40e58 to < ffd2dc4c6c49ff4f1e5d34e454a6a55608104c17affected
Linux Linux
Default version status: affected
6.4affected0 to < 6.4unaffected6.6.102 to ≤ 6.6.*unaffected6.12.42 to ≤ 6.12.*unaffected6.15.10 to ≤ 6.15.*unaffected6.16.1 to ≤ 6.16.*unaffected6.17 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/39491e859fd494d0b51adc5c7d54c8a7dcf1d198 ↗
- https://git.kernel.org/stable/c/d00e4125680f7074c4f42ce3c297336f23128e70 ↗
- https://git.kernel.org/stable/c/66fc2ebdd9d5dd6e5a9c7edeace5a61a0ab2cd86 ↗
- https://git.kernel.org/stable/c/f1a9dbcb7d17bf0abb325cdc984957cfabc59693 ↗
- https://git.kernel.org/stable/c/ffd2dc4c6c49ff4f1e5d34e454a6a55608104c17 ↗