Description
In the Linux kernel, the following vulnerability has been resolved: crypto: algif_hash - fix double free in hash_accept If accept(2) is called on socket type algif_hash with MSG_MORE flag set and crypto_ahash_import fails, sk2 is freed. However, it is also freed in af_alg_release, leading to slab-use-after-free error.
Affected products
linux: linux kernel; debian: debian linux
References10
- git.kernel.org/stable/c/0346f4b742345d1c733c977f3a7aef5a6419a967 Patch
- git.kernel.org/stable/c/134daaba93193df9e988524b5cd2f52d15eb1993 Patch
- git.kernel.org/stable/c/2f45a8d64fb4ed4830a4b3273834ecd6ca504896 Patch
- git.kernel.org/stable/c/5bff312b59b3f2a54ff504e4f4e47272b64f3633 Patch
- git.kernel.org/stable/c/b2df03ed4052e97126267e8c13ad4204ea6ba9b6 Patch
- git.kernel.org/stable/c/bf7bba75b91539e93615f560893a599c1e1c98bf Patch
- git.kernel.org/stable/c/c3059d58f79fdfb2201249c2741514e34562b547 Patch
- git.kernel.org/stable/c/f0f3d09f53534ea385d55ced408f2b67059b16e4 Patch
- lists.debian.org/debian-lts-announce/2025/10/msg00007.html Third Party Advisory
- lists.debian.org/debian-lts-announce/2025/10/msg00008.html Third Party Advisory
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 12 · as of 7 November 2026
- CWE
- CWE-415
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.