acl before version 2.4.0 contains a symlink traversal vulnerability in the libacl pathname-based functions acl_get_file(), acl_set_file(), acl_extended_file(), and acl_delete_def_file() that allows local attackers to escalate privileges by replacing any pathname component with a symbolic link. Attackers who control any component of a pathname processed by a privileged caller can redirect ACL read or write operations to arbitrary files or directories, enabling unauthorized manipulation of access control lists and local privilege escalation.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade libacl-develUpgrade libaclUpgrade acl | Jul 23, 2026 | Jul 21, 2026 |
| Amazon Linux Ami 2 | — | Upgrade acl-debuginfoUpgrade libacl-develUpgrade aclUpgrade libacl | Aug 5, 2026 | Aug 5, 2026 |
| Amazon_linux_2023 | — | Upgrade libaclUpgrade acl-debugsourceUpgrade libacl-debuginfoUpgrade acl-debuginfoUpgrade libacl-develUpgrade acl | Jul 21, 2026 | Jun 29, 2026 |
| Gentoo Linux | — | Upgrade sys-apps/acl.Upgrade sys-apps/attr. | Aug 20, 2026 | Aug 20, 2026 |
| Redhat Openshift | — | Upgrade ose-rhel-coreos | Aug 19, 2026 | Jun 29, 2026 |
| Redhat_linux | — | Upgrade acl-debugsourceUpgrade acl-debuginfoUpgrade libaclUpgrade aclUpgrade libacl-debuginfoUpgrade libacl-develNo solution exists | Jul 17, 2026 | Jun 29, 2026 |
| Rocky_linux | — | Upgrade libacl-debuginfoUpgrade acl-debugsourceUpgrade libaclUpgrade aclUpgrade acl-debuginfoUpgrade libacl-devel | Jul 27, 2026 | Jul 23, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Aug 10, 2026 | Jun 29, 2026 |
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