apparmor: fix memory leak in verify_header
CVE-2026-23403 is fixed in 12 products on 1 platform, first by DEBIAN-CVE-2026-23403, released April 1, 2026. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| kernel-64kb · sles 15.7 | 6.4.0-150700.53.55.1 | SUSE-SU-2026:2238-1 | Jun 30, 2026 |
| kernel-azure · sles 15.7 | 6.4.0-150700.53.55.1 | SUSE-SU-2026:2238-1 | Jun 30, 2026 |
| kernel-default · sles 15.6 | 6.4.0-150600.23.112.1 | SUSE-SU-2026:2195-1 | Jul 1, 2026 |
| kernel-default · sles 15.7 | 6.4.0-150700.53.55.1 | SUSE-SU-2026:2238-1 | Jun 30, 2026 |
| kernel-default-base · sles 15.6 | 6.4.0-150600.23.112.1.150600.12.52.1 | SUSE-SU-2026:2195-1 | Jul 1, 2026 |
| kernel-default-base · sles 15.7 | 6.4.0-150700.53.55.1.150700.17.33.1 | SUSE-SU-2026:2238-1 | Jun 30, 2026 |
| kernel-docs · sles 15.6 | 6.4.0-150600.23.112.1 | SUSE-SU-2026:2195-1 | Jul 1, 2026 |
| kernel-docs · sles 15.7 | 6.4.0-150700.53.55.1 | SUSE-SU-2026:2238-1 | Jun 30, 2026 |
| kernel-livepatch-SLE15-SP6_Update_26 · sles 15.6 | 1-150600.13.3.1 | SUSE-SU-2026:2195-1 | Jul 1, 2026 |
| kernel-livepatch-SLE15-SP7_Update_15 · sles 15.7 | 1-150700.15.3.1 | SUSE-SU-2026:2238-1 | Jun 30, 2026 |
| kernel-obs-build · sles 15.6 | 6.4.0-150600.23.112.1 | SUSE-SU-2026:2195-1 | Jul 1, 2026 |
| kernel-obs-build · sles 15.7 | 6.4.0-150700.53.55.1 | SUSE-SU-2026:2238-1 | Jun 30, 2026 |
| kernel-source · sles 15.6 | 6.4.0-150600.23.112.1 | SUSE-SU-2026:2195-1 | Jul 1, 2026 |
| kernel-source · sles 15.7 | 6.4.0-150700.53.55.1 | SUSE-SU-2026:2238-1 | Jun 30, 2026 |
| kernel-syms · sles 15.6 | 6.4.0-150600.23.112.1 | SUSE-SU-2026:2195-1 | Jul 1, 2026 |
| kernel-syms · sles 15.7 | 6.4.0-150700.53.55.1 | SUSE-SU-2026:2238-1 | Jun 30, 2026 |
| kernel-zfcpdump · sles 15.7 | 6.4.0-150700.53.55.1 | SUSE-SU-2026:2238-1 | Jun 30, 2026 |
| linux · Debian 12.15 (bookworm) | 6.1.164-1 | DEBIAN-CVE-2026-23403 | Apr 1, 2026 |
| linux · Debian 13.5 (trixie) | 6.12.74-2 | DEBIAN-CVE-2026-23403 | Apr 1, 2026 |
| linux · Debian 14 | 6.19.6-2 | DEBIAN-CVE-2026-23403 | Apr 1, 2026 |
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