CVE-2026-35354
Last modified
CVE-2026-35354 is a medium-severity vulnerability rated 4.7/10 on the CVSS scale. A Time-of-Check to Time-of-Use (TOCTOU) vulnerability exists in the mv utility of uutils coreutils during cross-device moves. The extended attribute (xattr) preservation logic uses multiple path-based system calls that perform fresh path-to-inode lookups for each operation. EPSS estimates a 0.09% chance of exploitation in the next 30 days.
Description
A Time-of-Check to Time-of-Use (TOCTOU) vulnerability exists in the mv utility of uutils coreutils during cross-device moves. The extended attribute (xattr) preservation logic uses multiple path-based system calls that perform fresh path-to-inode lookups for each operation. A local attacker with write access to the directory can exploit this race to swap files between calls, causing the destination file to receive an inconsistent mix of security xattrs, such as SELinux labels or file capabilities.
Metrics
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Uutils | Coreutils | All versions |
References
- https://github.com/uutils/coreutils/issues/10014Exploit, Issue Tracking, Vendor Advisory
- https://github.com/uutils/coreutils/issues/10014Exploit, Issue Tracking, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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