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CVE-2026-54370: Time-of-check Time-of-use (TOCTOU) Race Condition in acl project aclCVE-2026-54370 0 acl before version 2.4.0 contains a time-of-check to time-of-use (TOCTOU) race condition vulnerability that allows local attackers to escalate privileges by replacing a pathname component with a symbolic link between an lstat() check and subsequent symlink-following operations such as stat(), chown(), chmod(), acl_get_file(), and acl_set_file(). Attackers who control a pathname component can redirect file access control list operations to arbitrary files when getfacl, setfacl, or chacl is invoked by a privileged process over an attacker-controlled path, resulting in local privilege escalation. Join the discussion | CVE Database V5 | 06/29/2026, 12:38:11 UTC Added: 06/29/2026, 13:36:40 UTC |
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