uutils/coreutils · Security
uutils coreutils has a Time-of-check Time-of-use (TOCTOU) Race Condition
- GHSA ID
- GHSA-m976-87wm-48fm
- CVE ID
- CVE-2026-35364
- Severity
- medium
- Published
- Updated
- CVSS
- 6.3 · CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H
- CVSS v3
- 6.3 · CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H
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.
CWEs
- CWE-367 · Time-of-check Time-of-use (TOCTOU) Race Condition