CVE-2026-23403
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
01/04/2026
Last modified:
01/04/2026
Description
In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
apparmor: fix memory leak in verify_header<br />
<br />
The function sets `*ns = NULL` on every call, leaking the namespace<br />
string allocated in previous iterations when multiple profiles are<br />
unpacked. This also breaks namespace consistency checking since *ns<br />
is always NULL when the comparison is made.<br />
<br />
Remove the incorrect assignment.<br />
The caller (aa_unpack) initializes *ns to NULL once before the loop,<br />
which is sufficient.
Impact
References to Advisories, Solutions, and Tools
- https://git.kernel.org/stable/c/42fd831abfc15d0643c14688f0522556b347e7e6
- https://git.kernel.org/stable/c/4f0889f2df1ab99224a5e1ac4e20437eea5fe38e
- https://git.kernel.org/stable/c/663ce34786e759ebcbeb3060685c20bcc886d51a
- https://git.kernel.org/stable/c/786e2c2a87d9c505f33321d1fd23a176aa8ddeb1
- https://git.kernel.org/stable/c/e38c55d9f834e5b848bfed0f5c586aaf45acb825



