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CVE-2026-54369 is a local privilege-escalation vulnerability in acl before version 2.4.0. The flaw affects the libacl pathname-based functions acl_get_file(), acl_set_file(), acl_extended_file(), and acl_delete_def_file(). These APIs operate on pathnames in a way that permits symbolic-link traversal: if an attacker can replace any component of a pathname with a symbolic link before or during processing by a privileged caller, the ACL operation can be redirected to an unintended target. As a result, privileged ACL reads or writes may be performed on arbitrary files or directories selected by the attacker. The issue enables unauthorized manipulation of access control lists and can be used to elevate privileges locally. Version 2.4.0 introduces safer *_at variants of the affected APIs to support symlink-safe operation relative to directory file descriptors.
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No public exploit code observed for this vulnerability.
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19 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability referenced in a Nutanix AOS security notice/plugin, but no specific technical details are provided in the content.
A specific vulnerability referenced in the Gentoo GLSA-202608-20 advisory affecting Gentoo packages; the content does not describe the flaw type beyond severity metadata.
A privilege escalation vulnerability in acl/libacl caused by symlink traversal.
A symlink traversal privilege escalation vulnerability in acl/libacl pathname-based functions affecting versions before 2.4.0, allowing local attackers to redirect ACL operations to arbitrary files or directories and escalate privileges.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.