Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 4.17, < 5.10.252 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/00b67657535dfea56e84d11492f5c0f61d0af297Patch
- https://git.kernel.org/stable/c/0dc19bca22606f7a61d5988408f74e3ae0ef3486Patch
- https://git.kernel.org/stable/c/3852eb9a0392eb435c03dcb47d581bcfe6a9a95bPatch
- https://git.kernel.org/stable/c/5121b7283f1c46e4c06b88b1dda7b064429d77dePatch
- https://git.kernel.org/stable/c/68538ec34fcb4194c7961dc4eca6f5537fec8067Patch
- https://git.kernel.org/stable/c/8a0ededbfcff74598f82f1d4b8ef9db28878b317Patch
- https://git.kernel.org/stable/c/c11b7c3280d000376e27ebfed17ec7046699eab4Patch
- https://git.kernel.org/stable/c/ccb66a3c6c8f51b3ed1bc003b70bb9ff99e8d835Patch
FAQ
What is CVE-2026-45848?
CVE-2026-45848 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 tear...
How severe is CVE-2026-45848?
CVE-2026-45848 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-45848?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.