[ GLSA 202604-03 ] FUSE: Multiple Vulnerabilities

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Gentoo Linux Security Advisory                           GLSA 202604-03
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: FUSE: Multiple Vulnerabilities
     Date: April 17, 2026
     Bugs: #971552
       ID: 202604-03

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Synopsis
========

Multiple vulnerabilities have been found in FUSE, the worst of which can
lead to code execution.

Background
==========

FUSE (Filesystem in Userspace) is an interface for userspace programs to
export a filesystem to the Linux kernel.

Affected packages
=================

Package      Vulnerable    Unaffected
-----------  ------------  ------------
sys-fs/fuse  < 3.18.1      >= 3.18.1

Description
===========

The following vulnerabilities have been discovered in FUSE: a NULL
pointer dereference (when running with the NUMA architecture) and a use-
after-free. The worst of which can lead to code execution. Please review
the CVE identifiers referenced below for details.

Impact
======

The following is a possible outcome: denial of service (crash) and
potential code execution.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All FUSE users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=sys-fs/fuse-3.18.1:3"

References
==========

[ 1 ] CVE-2026-33150
      https://nvd.nist.gov/vuln/detail/CVE-2026-33150
[ 2 ] CVE-2026-33179
      https://nvd.nist.gov/vuln/detail/CVE-2026-33179

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

 https://security.gentoo.org/glsa/202604-03

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
[email protected] or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======

Copyright 2026 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

https://creativecommons.org/licenses/by-sa/2.5
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