Summary
Access Control Lists (ACLs) are used to define fine-grained discretionary access rights for files and directories. The acl packages contain the getfacl and setfacl utilities needed for manipulating access control lists.
Security Fix(es):
* acl: Symlink traversal privilege escalation via libacl functions (CVE-2026-54369)
* acl: TOCTOU Symlink Traversal via getfacl/setfacl (CVE-2026-54370)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Fixed packages 3
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux · 9 | acl | 2.4.0-1.el9_8 |
| AlmaLinux · 9 | libacl | 2.4.0-1.el9_8 |
| AlmaLinux · 9 | libacl-devel | 2.4.0-1.el9_8 |
Vulnerabilities 2
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High 7.1
acl < 2.4.0 Symlink Traversal Privilege Escalation via libacl Functions
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 pathn…
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Medium 6.3
acl < 2.4.0 TOCTOU Symlink Traversal via getfacl/setfacl/chacl
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-fo…