CVE-2026-45848apparmor: fix NULL sock in aa_sock_file_perm
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Analyzed
- Record last updated
- May 27, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 56974a6fcfef69ee0825bd66ed13e92070ac5224 before 68538ec34fcb4194c7961dc4eca6f5537fec8067; 56974a6fcfef69ee0825bd66ed13e92070ac5224 builds before 5121b7283f1c46e4c06b88b1dda7b064429d77de; from 56974a6fcfef69ee0825bd66ed13e92070ac5224 before c11b7c3280d000376e27ebfed17ec7046699eab4; 56974a6fcfef69ee0825bd66ed13e92070ac5224 builds before 0dc19bca22606f7a61d5988408f74e3ae0ef3486; 56974a6fcfef69ee0825bd66ed13e92070ac5224 builds before 3852eb9a0392eb435c03dcb47d581bcfe6a9a95b; from 56974a6fcfef69ee0825bd66ed13e92070ac5224 before ccb66a3c6c8f51b3ed1bc003b70bb9ff99e8d835; 56974a6fcfef69ee0825bd66ed13e92070ac5224 builds before 8a0ededbfcff74598f82f1d4b8ef9db28878b317; 56974a6fcfef69ee0825bd66ed13e92070ac5224 builds before 00b67657535dfea56e84d11492f5c0f61d0af297 | CNA record |
linux linux_kernel linux:linux_kernel | from 4.17 before 5.10.252; from 5.11 before 5.15.202; from 5.16 before 6.1.165; from 6.2 before 6.6.128; from 6.7 before 6.12.75; from 6.13 before 6.18.14; from 6.19 before 6.19.4 | NVD |
References
- https://git.kernel.org/stable/c/68538ec34fcb4194c7961dc4eca6f5537fec8067patch
- https://git.kernel.org/stable/c/5121b7283f1c46e4c06b88b1dda7b064429d77depatch
- https://git.kernel.org/stable/c/c11b7c3280d000376e27ebfed17ec7046699eab4patch
- https://git.kernel.org/stable/c/0dc19bca22606f7a61d5988408f74e3ae0ef3486patch
- https://git.kernel.org/stable/c/3852eb9a0392eb435c03dcb47d581bcfe6a9a95bpatch
- https://git.kernel.org/stable/c/ccb66a3c6c8f51b3ed1bc003b70bb9ff99e8d835patch
- https://git.kernel.org/stable/c/8a0ededbfcff74598f82f1d4b8ef9db28878b317patch
- https://git.kernel.org/stable/c/00b67657535dfea56e84d11492f5c0f61d0af297patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.