Homepage

Time-of-check Time-of-use (TOCTOU) The advisory has been revoked - it doesn't affect any version of package libacl-devel  (opens in a new tab)

Threat Intelligence

EPSS
0.09% (1st percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-RHEL10-LIBACLDEVEL-17696366
  • published30 Jun 2026
  • disclosed29 Jun 2026
Report a new vulnerability Found a mistake?

Introduced: 29 Jun 2026

CVE-2026-54370  (opens in a new tab)
CWE-367  (opens in a new tab)

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:10.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libacl-devel package and not the libacl-devel package as distributed by RHEL.

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.