CVE-2026-23403
Published: April 4, 2026Last modified: April 4, 2026
Description
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.
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Vulnerable (6.1.164-r0) |
| 25 LTS | linux-lts | Vulnerable (6.12.74-r0) | |
| Stream | linux-lts | Vulnerable (6.12.76-r0) |
References
- 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