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Gentoo Linux Security Advisory GLSA 202506-04
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https://security.gentoo.org/
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Severity: High
Title: X.Org X server, XWayland: Multiple Vulnerabilities
Date: June 12, 2025
Bugs: #950290
ID: 202506-04

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Synopsis
========

A vulnerability has been discovered in the Xorg Server and XWayland, the
worst of which can result in privilege escalation.

Background
==========

The X Window System is a graphical windowing system based on a
client/server model.

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

Package Vulnerable Unaffected
-------------------- ------------ ------------
x11-base/xorg-server < 21.1.16 >= 21.1.16
x11-base/xwayland < 24.1.6 >= 24.1.6

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

Multiple vulnerabilities have been discovered in X.Org X server and
XWayland. Please review the CVE identifiers referenced below for
details.

Impact
======

Please review the referenced CVE identifiers for details.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All X.Org X server users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=x11-base/xorg-server-21.1.16"

All XWayland users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=x11-base/xwayland-24.1.6"

References
==========

[ 1 ] CVE-2025-26594
https://nvd.nist.gov/vuln/detail/CVE-2025-26594
[ 2 ] CVE-2025-26595
https://nvd.nist.gov/vuln/detail/CVE-2025-26595
[ 3 ] CVE-2025-26596
https://nvd.nist.gov/vuln/detail/CVE-2025-26596
[ 4 ] CVE-2025-26597
https://nvd.nist.gov/vuln/detail/CVE-2025-26597
[ 5 ] CVE-2025-26598
https://nvd.nist.gov/vuln/detail/CVE-2025-26598
[ 6 ] CVE-2025-26599
https://nvd.nist.gov/vuln/detail/CVE-2025-26599
[ 7 ] CVE-2025-26600
https://nvd.nist.gov/vuln/detail/CVE-2025-26600
[ 8 ] CVE-2025-26601
https://nvd.nist.gov/vuln/detail/CVE-2025-26601

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

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

https://security.gentoo.org/glsa/202506-04

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 2025 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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