GitHub Advisoryadvisory · crates.io

GHSA-x4mc-mqm7-gg39 uutils coreutils has a Time-of-Check to Time-of-Use (TOCTOU) race condition

MEDIUM Published 2026-04-22 Modified 2026-04-30 Official page ↗
Aliases
CVE-2026-35354
Ecosystem
crates.io
Packages
coreutils
Severity
Moderate
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
Weaknesses
CWE-367
Reviewed
2026-04-30

Affected packages

• crates.io coreutils: <= 0.8.0 (no fix yet)

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.

Related

Alias · CVE (1)

  • CVE-2026-35354 A Time-of-Check to Time-of-Use (TOCTOU) vulnerability exists in the mv utility of uutils coreutils during cross-device moves. vulnerability

Weakness · CWE (1)

  • CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition weakness

References