PT-2026-29486 · Linux · Linux

Published 2026-04-01 · Updated 2026-04-01 · CVE-2026-23403

NVD

In the Linux kernel, the following vulnerability has been resolved:

apparmor: fix memory leak in verify header

The function sets *ns = NULL on every call, leaking the namespace string allocated in previous iterations when multiple profiles are unpacked. This also breaks namespace consistency checking since *ns is always NULL when the comparison is made.

Remove the incorrect assignment. The caller (aa unpack) initializes *ns to NULL once before the loop, which is sufficient.

Related Identifiers

CVE-2026-23403

Affected Products

Linux

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2026-23403 · Security Note
• https://git.kernel.org/stable/c/4f0889f2df1ab99224a5e1ac4e20437eea5fe38e · Note
• https://git.kernel.org/stable/c/786e2c2a87d9c505f33321d1fd23a176aa8ddeb1 · Note
• https://git.kernel.org/stable/c/e38c55d9f834e5b848bfed0f5c586aaf45acb825 · Note
• https://git.kernel.org/stable/c/42fd831abfc15d0643c14688f0522556b347e7e6 · Note
• https://git.kernel.org/stable/c/663ce34786e759ebcbeb3060685c20bcc886d51a · Note