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.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://github.com/uutils/coreutils/issues/10015 Exploit, Issue Tracking, Vendor Advisory
- https://github.com/uutils/coreutils/issues/10015 Exploit, Issue Tracking, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 6.3 · uutilsNVD modified 2026-10-26 22:10
Affected (CPE criteria) 1
cpe:2.3:a:uutils:coreutils:-:*:*:*:*:rust:*:*
References 2
- https://github.com/uutils/coreutils/issues/10015 Exploit, Issue Tracking, Vendor Advisory
- https://github.com/uutils/coreutils/issues/10015 Exploit, Issue Tracking, Vendor Advisory