CVE-2026-23403
apparmor: fix memory leak in verify_header
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
3.12
References 8
git.kernel.org
- stable/c/9d678eb0fe55c9195d9a253e8c5b82a87b930737
- stable/c/6b79abcb3c985e153fcf9d395e1d4336081aabc2
- stable/c/bcf82c0c5a8b383fd2d5d8f3fd880cdcab2ac557
- stable/c/663ce34786e759ebcbeb3060685c20bcc886d51a
- stable/c/786e2c2a87d9c505f33321d1fd23a176aa8ddeb1
- stable/c/4f0889f2df1ab99224a5e1ac4e20437eea5fe38e
- stable/c/42fd831abfc15d0643c14688f0522556b347e7e6
- stable/c/e38c55d9f834e5b848bfed0f5c586aaf45acb825