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

References