Vulnerability Details CVE-2026-35352
A Time-of-Check to Time-of-Use (TOCTOU) race condition exists in the mkfifo utility of uutils coreutils. The utility creates a FIFO and then performs a path-based chmod to set permissions. A local attacker with write access to the parent directory can swap the newly created FIFO for a symbolic link between these two operations. This redirects the chmod call to an arbitrary file, potentially enabling privilege escalation if the utility is run with elevated privileges.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 1.1%
CVSS Severity
CVSS v3 Score 7.0
References