CVE-2025-39964
KEV High · CVSS 7.8- CVSS
- 7.8
- nvd
- EPSS
- —
- KEV
- Listed
- 2026-09-18
- Class
- oss containerizable
- CWE-362, CWE-362
Description
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.
Affected packages
| Linux | Kernel | 2.6.38 → 5.10.245 |
| Linux | Kernel | 5.11.0 → 5.15.194 |
| Linux | Kernel | 5.16.0 → 6.1.154 |
| Linux | Kernel | 6.13.0 → 6.16.9 |
| Linux | Kernel | 6.2.0 → 6.6.108 |
| Linux | Kernel | 6.7.0 → 6.12.49 |
References
- https://git.kernel.org/stable/c/0f28c4adbc4a97437874c9b669fd7958a8c6d6ce
- https://git.kernel.org/stable/c/1b34cbbf4f011a121ef7b2d7d6e6920a036d5285
- https://git.kernel.org/stable/c/1f323a48e9b5ebfe6dc7d130fdf5c3c0e92a07c8
- https://git.kernel.org/stable/c/45bcf60fe49b37daab1acee57b27211ad1574042
- https://git.kernel.org/stable/c/7c4491b5644e3a3708f3dbd7591be0a570135b84
- https://git.kernel.org/stable/c/9aee87da5572b3a14075f501752e209801160d3d
- https://git.kernel.org/stable/c/e4c1ec11132ec466f7362a95f36a506ce4dc08c9
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-39964
Status: profiled · ingested 2026-09-18T18:00:27.000Z