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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.

PUBLISHED Reserved 2026-04-02 | Published 2026-04-22 | Updated 2026-04-22 | Assigner canonical




MEDIUM: 4.7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N

Problem types

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

Product status

Default status
affected

Credits

Zellic finder

References

github.com/uutils/coreutils/issues/10014 exploit

github.com/uutils/coreutils/issues/10014 issue-tracking

cve.org (CVE-2026-35354)

nvd.nist.gov (CVE-2026-35354)

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