CVE-2026-45848

apparmor: fix NULL sock in aa_sock_file_perm

State: Published
Severity: Not scored
Published: May 27, 2026
Updated: May 27, 2026
Reserved: May 13, 2026

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	56974a6fcfef69ee0825bd66ed13e92070ac5224 to before 68538ec34fcb4194c7961dc4eca6f5537fec8067Affected 56974a6fcfef69ee0825bd66ed13e92070ac5224 to before 5121b7283f1c46e4c06b88b1dda7b064429d77deAffected 56974a6fcfef69ee0825bd66ed13e92070ac5224 to before c11b7c3280d000376e27ebfed17ec7046699eab4Affected 56974a6fcfef69ee0825bd66ed13e92070ac5224 to before 0dc19bca22606f7a61d5988408f74e3ae0ef3486Affected 56974a6fcfef69ee0825bd66ed13e92070ac5224 to before 3852eb9a0392eb435c03dcb47d581bcfe6a9a95bAffected 56974a6fcfef69ee0825bd66ed13e92070ac5224 to before ccb66a3c6c8f51b3ed1bc003b70bb9ff99e8d835Affected 56974a6fcfef69ee0825bd66ed13e92070ac5224 to before 8a0ededbfcff74598f82f1d4b8ef9db28878b317Affected 56974a6fcfef69ee0825bd66ed13e92070ac5224 to before 00b67657535dfea56e84d11492f5c0f61d0af297Affected
LinuxLinux	4.17Affected before 4.17Not affected 5.10.252 through 5.10.Not affected 5.15.202 through 5.15.Not affected 6.1.165 through 6.1.Not affected 6.6.128 through 6.6.Not affected 6.12.75 through 6.12.Not affected 6.18.14 through 6.18.Not affected 6.19.4 through 6.19.*Not affected 7.0 and laterNot affected

Product

Versions

LinuxLinux

56974a6fcfef69ee0825bd66ed13e92070ac5224 to before 68538ec34fcb4194c7961dc4eca6f5537fec8067Affected
56974a6fcfef69ee0825bd66ed13e92070ac5224 to before 5121b7283f1c46e4c06b88b1dda7b064429d77deAffected
56974a6fcfef69ee0825bd66ed13e92070ac5224 to before c11b7c3280d000376e27ebfed17ec7046699eab4Affected
56974a6fcfef69ee0825bd66ed13e92070ac5224 to before 0dc19bca22606f7a61d5988408f74e3ae0ef3486Affected
56974a6fcfef69ee0825bd66ed13e92070ac5224 to before 3852eb9a0392eb435c03dcb47d581bcfe6a9a95bAffected
56974a6fcfef69ee0825bd66ed13e92070ac5224 to before ccb66a3c6c8f51b3ed1bc003b70bb9ff99e8d835Affected
56974a6fcfef69ee0825bd66ed13e92070ac5224 to before 8a0ededbfcff74598f82f1d4b8ef9db28878b317Affected
56974a6fcfef69ee0825bd66ed13e92070ac5224 to before 00b67657535dfea56e84d11492f5c0f61d0af297Affected

LinuxLinux

4.17Affected
before 4.17Not affected
5.10.252 through 5.10.*Not affected
5.15.202 through 5.15.*Not affected
6.1.165 through 6.1.*Not affected
6.6.128 through 6.6.*Not affected
6.12.75 through 6.12.*Not affected
6.18.14 through 6.18.*Not affected
6.19.4 through 6.19.*Not affected
7.0 and laterNot affected

References

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