CVE-2025-38568
net/sched: mqprio: fix stack out-of-bounds write in tc entry parsing
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Aug 19, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
f62af20bed2d9e824f51cfc97ff01bc261f40e58 < 39491e859fd494d0b51adc5c7d54c8a7dcf1d198 f62af20bed2d9e824f51cfc97ff01bc261f40e58 < d00e4125680f7074c4f42ce3c297336f23128e70 f62af20bed2d9e824f51cfc97ff01bc261f40e58 < 66fc2ebdd9d5dd6e5a9c7edeace5a61a0ab2cd86 f62af20bed2d9e824f51cfc97ff01bc261f40e58 < f1a9dbcb7d17bf0abb325cdc984957cfabc59693 f62af20bed2d9e824f51cfc97ff01bc261f40e58 < ffd2dc4c6c49ff4f1e5d34e454a6a55608104c17
Linux / Linux
6.4
References
git.kernel.org: https://git.kernel.org/stable/c/39491e859fd494d0b51adc5c7d54c8a7dcf1d198 git.kernel.org: https://git.kernel.org/stable/c/d00e4125680f7074c4f42ce3c297336f23128e70 git.kernel.org: https://git.kernel.org/stable/c/66fc2ebdd9d5dd6e5a9c7edeace5a61a0ab2cd86 git.kernel.org: https://git.kernel.org/stable/c/f1a9dbcb7d17bf0abb325cdc984957cfabc59693 git.kernel.org: https://git.kernel.org/stable/c/ffd2dc4c6c49ff4f1e5d34e454a6a55608104c17