Vulnerability Description
A Time-of-Check to Time-of-Use (TOCTOU) vulnerability exists in the chcon utility of uutils coreutils during recursive operations. The implementation resolves recursive targets using a fresh path lookup (via fts_accpath) rather than binding the traversal and label application to the specific directory state encountered during traversal. Because these operations are not anchored to file descriptors, a local attacker with write access to a directory tree can exploit timing-sensitive rename or symbolic link races to redirect a privileged recursive relabeling operation to unintended files or directories. This vulnerability breaks the hardening expectations for SELinux administration workflows and can lead to the unauthorized modification of security labels on sensitive system objects.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Uutils | Coreutils | < 0.8.0 |
Related Weaknesses (CWE)
References
- https://github.com/uutils/coreutils/pull/11402Issue Tracking
- https://github.com/uutils/coreutils/releases/tag/0.8.0Release Notes
FAQ
What is CVE-2026-35376?
CVE-2026-35376 is a vulnerability with a CVSS score of 4.5 (MEDIUM). A Time-of-Check to Time-of-Use (TOCTOU) vulnerability exists in the chcon utility of uutils coreutils during recursive operations. The implementation resolves recursive targets using a fresh path look...
How severe is CVE-2026-35376?
CVE-2026-35376 has been rated MEDIUM with a CVSS base score of 4.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-35376?
Check the references section above for vendor advisories and patch information. Affected products include: Uutils Coreutils.