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Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process. 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 or setfacl is invoked by a privileged process over an attacker-controlled path, resulting in local privilege escalation.
FEDORA-2026-a948378fff (acl-2.4.0-1.fc45) has been submitted as an update to Fedora 45. https://bodhi.fedoraproject.org/updates/FEDORA-2026-a948378fff
FEDORA-2026-67504c329b (acl-2.4.0-1.fc43) has been submitted as an update to Fedora 43. https://bodhi.fedoraproject.org/updates/FEDORA-2026-67504c329b
FEDORA-2026-6b9a652463 (acl-2.4.0-1.fc44) has been submitted as an update to Fedora 44. https://bodhi.fedoraproject.org/updates/FEDORA-2026-6b9a652463
FEDORA-2026-6b9a652463 has been pushed to the Fedora 44 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-6b9a652463` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-6b9a652463 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2026-67504c329b has been pushed to the Fedora 43 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-67504c329b` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-67504c329b See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2026-6b9a652463 (acl-2.4.0-1.fc44) has been pushed to the Fedora 44 stable repository. If problem still persists, please make note of it in this bug report.