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.
History

Wed, 22 Apr 2026 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 22 Apr 2026 16:30:00 +0000

Type Values Removed Values Added
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.
Title uutils coreutils mv Security Xattr TOCTOU Race in Cross-Device
Weaknesses CWE-367
References
Metrics cvssV3_1

{'score': 4.7, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: canonical

Published:

Updated: 2026-04-22T18:02:57.031Z

Reserved: 2026-04-02T12:58:56.087Z

Link: CVE-2026-35354

cve-icon Vulnrichment

Updated: 2026-04-22T18:02:46.129Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-04-22T17:16:37.867

Modified: 2026-04-22T21:23:52.620

Link: CVE-2026-35354

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.