This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-54369 →

DEBIAN-CVE-2026-54369

acl before version 2.4.0 contains a symlink traversal vulnerability in the libacl pathname-based functions acl_get_file(), acl_set_file(), acl_extende...

Original description

The description as published by the source.

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.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 acl

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:13 acl

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:14 acl

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.0-1"}]}]

References

advisory security-tracker.debian.org