CVE-2026-45848

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.

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EPSS — Exploit Prediction

0.0021

Probability of exploitation

0.11%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

References

Other References

https://git.kernel.org/stable/c/00b67657535dfea56e84d11492f5c0f61d0af297 https://git.kernel.org/stable/c/0dc19bca22606f7a61d5988408f74e3ae0ef3486 https://git.kernel.org/stable/c/3852eb9a0392eb435c03dcb47d581bcfe6a9a95b https://git.kernel.org/stable/c/5121b7283f1c46e4c06b88b1dda7b064429d77de https://git.kernel.org/stable/c/68538ec34fcb4194c7961dc4eca6f5537fec8067 https://git.kernel.org/stable/c/8a0ededbfcff74598f82f1d4b8ef9db28878b317 https://git.kernel.org/stable/c/c11b7c3280d000376e27ebfed17ec7046699eab4 https://git.kernel.org/stable/c/ccb66a3c6c8f51b3ed1bc003b70bb9ff99e8d835

Frequently Asked Questions

What is CVE-2026-45848? +

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.

How do I check if I'm vulnerable to CVE-2026-45848? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.