CVE-2026-23403
apparmor: fix memory leak in verify_header
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
6th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Apr 1, 2026 |
| Last Updated | Apr 18, 2026 |
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Affected Versions
Linux / Linux
dd51c84857630e77c139afe4d9bba65fc051dc3f < 9d678eb0fe55c9195d9a253e8c5b82a87b930737 dd51c84857630e77c139afe4d9bba65fc051dc3f < 6b79abcb3c985e153fcf9d395e1d4336081aabc2 dd51c84857630e77c139afe4d9bba65fc051dc3f < bcf82c0c5a8b383fd2d5d8f3fd880cdcab2ac557 dd51c84857630e77c139afe4d9bba65fc051dc3f < 663ce34786e759ebcbeb3060685c20bcc886d51a dd51c84857630e77c139afe4d9bba65fc051dc3f < 786e2c2a87d9c505f33321d1fd23a176aa8ddeb1 dd51c84857630e77c139afe4d9bba65fc051dc3f < 4f0889f2df1ab99224a5e1ac4e20437eea5fe38e dd51c84857630e77c139afe4d9bba65fc051dc3f < 42fd831abfc15d0643c14688f0522556b347e7e6 dd51c84857630e77c139afe4d9bba65fc051dc3f < e38c55d9f834e5b848bfed0f5c586aaf45acb825
Linux / Linux
3.12
References
git.kernel.org: https://git.kernel.org/stable/c/9d678eb0fe55c9195d9a253e8c5b82a87b930737 git.kernel.org: https://git.kernel.org/stable/c/6b79abcb3c985e153fcf9d395e1d4336081aabc2 git.kernel.org: https://git.kernel.org/stable/c/bcf82c0c5a8b383fd2d5d8f3fd880cdcab2ac557 git.kernel.org: https://git.kernel.org/stable/c/663ce34786e759ebcbeb3060685c20bcc886d51a git.kernel.org: https://git.kernel.org/stable/c/786e2c2a87d9c505f33321d1fd23a176aa8ddeb1 git.kernel.org: https://git.kernel.org/stable/c/4f0889f2df1ab99224a5e1ac4e20437eea5fe38e git.kernel.org: https://git.kernel.org/stable/c/42fd831abfc15d0643c14688f0522556b347e7e6 git.kernel.org: https://git.kernel.org/stable/c/e38c55d9f834e5b848bfed0f5c586aaf45acb825