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High RLSA-2026:43420 2 CVEs

Important: acl security update

Published Jul 23, 2026 · Updated Jul 23, 2026

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 1

ReleasePackageFixed in
Rocky Linux · 8 acl 0:2.4.0-1.el8_10

Vulnerabilities 2

  • 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…

  • 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…

References

  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2490277
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2490279