VDB
CVE-2026-23403
CVE-2026-23403
PUBLISHED
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.
EPSS 0.01% · 1.0th percentile
Risk Scores
EPSS Score
0.01%
1.0th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | 6.6.130, 6.12.77, 6.18.18 |
| linux | linux_kernel | 3.12, 3.12, 3.12 |
Timeline
- Apr 1, 2026 CVE Published
- Apr 1, 2026 Security Advisory
- Apr 24, 2026 CVE Updated
- Apr 29, 2026 Distribution Patch
- Apr 29, 2026 Distribution Patch
- Apr 29, 2026 Distribution Patch
- Apr 29, 2026 Distribution Patch
- Apr 29, 2026 Distribution Patch
- Apr 29, 2026 Distribution Patch
- Apr 29, 2026 Distribution Patch
- Apr 29, 2026 Distribution Patch
- Apr 29, 2026 Distribution Patch
References
- https://git.kernel.org/stable/c/663ce34786e759ebcbeb3060685c20bcc886d51a url
- https://git.kernel.org/stable/c/786e2c2a87d9c505f33321d1fd23a176aa8ddeb1 url
- https://git.kernel.org/stable/c/4f0889f2df1ab99224a5e1ac4e20437eea5fe38e url
- https://git.kernel.org/stable/c/42fd831abfc15d0643c14688f0522556b347e7e6 url
- https://git.kernel.org/stable/c/e38c55d9f834e5b848bfed0f5c586aaf45acb825 url
- https://nvd.nist.gov/vuln/detail/CVE-2026-23403 advisory
- https://ubuntu.com/security/notices/USN-8180-5 advisory
- https://ubuntu.com/security/notices/USN-8183-2 advisory
- https://ubuntu.com/security/notices/USN-8098-10 advisory
- https://ubuntu.com/security/notices/USN-8201-1 advisory
- https://ubuntu.com/security/notices/USN-8179-3 advisory
- https://ubuntu.com/security/notices/USN-8203-1 advisory
- https://ubuntu.com/security/notices/USN-8180-4 advisory
- https://ubuntu.com/security/notices/USN-8200-1 advisory
- https://ubuntu.com/security/notices/USN-8204-1 advisory
- https://ubuntu.com/security/notices/USN-8200-2 advisory
- https://ubuntu.com/security/notices/USN-8180-3 advisory
- https://www.suse.com/support/update/announcement/2026/suse-su-202621930-1 advisory
- https://www.suse.com/support/update/announcement/2026/suse-su-202621841-1 advisory
- https://www.suse.com/support/update/announcement/2026/suse-su-20262238-1 advisory
…and 84 more