CVE-2025-39964
crypto: af_alg - Disallow concurrent writes in af_alg_sendmsg
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: crypto: af_alg - Disallow concurrent writes in af_alg_sendmsg Issuing two writes to the same af_alg socket is bogus as the data will be interleaved in an unpredictable fashion. Furthermore, concurrent writes may create inconsistencies in the internal socket state. Disallow this by adding a new ctx->write field that indiciates exclusive ownership for writing.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Oct 13, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
8ff590903d5fc7f5a0a988c38267a3d08e6393a2 < 0f28c4adbc4a97437874c9b669fd7958a8c6d6ce 8ff590903d5fc7f5a0a988c38267a3d08e6393a2 < e4c1ec11132ec466f7362a95f36a506ce4dc08c9 8ff590903d5fc7f5a0a988c38267a3d08e6393a2 < 1f323a48e9b5ebfe6dc7d130fdf5c3c0e92a07c8 8ff590903d5fc7f5a0a988c38267a3d08e6393a2 < 7c4491b5644e3a3708f3dbd7591be0a570135b84 8ff590903d5fc7f5a0a988c38267a3d08e6393a2 < 9aee87da5572b3a14075f501752e209801160d3d 8ff590903d5fc7f5a0a988c38267a3d08e6393a2 < 45bcf60fe49b37daab1acee57b27211ad1574042 8ff590903d5fc7f5a0a988c38267a3d08e6393a2 < 1b34cbbf4f011a121ef7b2d7d6e6920a036d5285
Linux / Linux
2.6.38
References
git.kernel.org: https://git.kernel.org/stable/c/0f28c4adbc4a97437874c9b669fd7958a8c6d6ce git.kernel.org: https://git.kernel.org/stable/c/e4c1ec11132ec466f7362a95f36a506ce4dc08c9 git.kernel.org: https://git.kernel.org/stable/c/1f323a48e9b5ebfe6dc7d130fdf5c3c0e92a07c8 git.kernel.org: https://git.kernel.org/stable/c/7c4491b5644e3a3708f3dbd7591be0a570135b84 git.kernel.org: https://git.kernel.org/stable/c/9aee87da5572b3a14075f501752e209801160d3d git.kernel.org: https://git.kernel.org/stable/c/45bcf60fe49b37daab1acee57b27211ad1574042 git.kernel.org: https://git.kernel.org/stable/c/1b34cbbf4f011a121ef7b2d7d6e6920a036d5285