A Time-of-Check to Time-of-Use (TOCTOU) race condition exists in the mv utility of uutils coreutils during cross-device operations. The utility removes the destination path before recreating it through a copy operation. A local attacker with write access to the destination directory can exploit this window to replace the destination with a symbolic link. The subsequent privileged move operation will follow the symlink, allowing the attacker to redirect the write and overwrite an arbitrary target file with contents from the source.

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History

Wed, 22 Apr 2026 18:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', '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) race condition exists in the mv utility of uutils coreutils during cross-device operations. The utility removes the destination path before recreating it through a copy operation. A local attacker with write access to the destination directory can exploit this window to replace the destination with a symbolic link. The subsequent privileged move operation will follow the symlink, allowing the attacker to redirect the write and overwrite an arbitrary target file with contents from the source.
Title uutils coreutils mv Arbitrary File Overwrite via Cross-Device TOCTOU Race Condition
Weaknesses CWE-367
References
Metrics cvssV3_1

{'score': 6.3, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: canonical

Published:

Updated: 2026-04-22T17:22:25.742Z

Reserved: 2026-04-02T12:58:56.088Z

Link: CVE-2026-35364

cve-icon Vulnrichment

Updated: 2026-04-22T17:21:39.628Z

cve-icon NVD

Status : Received

Published: 2026-04-22T17:16:39.737

Modified: 2026-04-22T18:16:31.273

Link: CVE-2026-35364

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-22T18:15:15Z

Weaknesses