CVE-2026-35364

uutils coreutils mv Arbitrary File Overwrite via Cross-Device TOCTOU Race Condition

State
Published
Severity
6.3 Medium
Published
Apr 22, 2026
Updated
Apr 22, 2026
Reserved
Apr 2, 2026

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.16.3 MediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:Hcanonical

Weaknesses

  • CWE-367 Time-of-Check Time-of-Use (TOCTOU) Race Condition

Affected Products

ProductVersions
coreutilsUutils

    References

    Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.