Vulnerability Description
The Linuxulator determined whether a binary was set-user-ID or set-group-ID by checking the P_SUGID process flag. During execve(2), this flag is not yet set at the point where the auxiliary vector is constructed, so AT_SECURE was incorrectly set to zero for set-user-ID and set-group-ID executables. An unprivileged local user can inject a shared library via LD_PRELOAD into a set-user-ID or set-group-ID Linux binary, gaining the privileges of that binary.
Related Weaknesses (CWE)
References
FAQ
What is CVE-2026-49413?
CVE-2026-49413 is a documented vulnerability. The Linuxulator determined whether a binary was set-user-ID or set-group-ID by checking the P_SUGID process flag. During execve(2), this flag is not yet set at the point where the auxiliary vector is...
How severe is CVE-2026-49413?
CVSS scoring is not yet available for CVE-2026-49413. Check NVD for updates.
Is there a patch for CVE-2026-49413?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.