Description
In the Linux kernel, the following vulnerability has been resolved: apparmor: fix NULL sock in aa_sock_file_perm Deal with the potential that sock and sock-sk can be NULL during socket setup or teardown. This could lead to an oops. The fix for NULL pointer dereference in __unix_needs_revalidation shows this is at least possible for af_unix sockets. While the fix for af_unix sockets applies for newer mediation this is still the fall back path for older af_unix mediation and other sockets, so ensure it is covered.
Affected products
linux: linux kernel
References8
- git.kernel.org/stable/c/00b67657535dfea56e84d11492f5c0f61d0af297 Patch
- git.kernel.org/stable/c/0dc19bca22606f7a61d5988408f74e3ae0ef3486 Patch
- git.kernel.org/stable/c/3852eb9a0392eb435c03dcb47d581bcfe6a9a95b Patch
- git.kernel.org/stable/c/5121b7283f1c46e4c06b88b1dda7b064429d77de Patch
- git.kernel.org/stable/c/68538ec34fcb4194c7961dc4eca6f5537fec8067 Patch
- git.kernel.org/stable/c/8a0ededbfcff74598f82f1d4b8ef9db28878b317 Patch
- git.kernel.org/stable/c/c11b7c3280d000376e27ebfed17ec7046699eab4 Patch
- git.kernel.org/stable/c/ccb66a3c6c8f51b3ed1bc003b70bb9ff99e8d835 Patch
Metrics
- CVSS 3.1
-
5.5
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 5 · as of 14 November 2026
- CWE
- CWE-476
Could this be exploited in your environment?
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