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Gentoo: GLSA-202506-04 high: X.Org X server, XWayland exploit risk

gentoo
Calendar Grey June 12, 2025
Dist Gentoo Esm H88
Several critical vulnerabilities in the X.Org X server and XWayland of Gentoo necessitate urgent patches.
A vulnerability has been discovered in the Xorg Server and XWayland, the worst of which can result in privilege escalation.

Summary

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

Topics%20covered

Topics Covered

security advisory gentoo privilege escalation high xorg-server xwayland

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
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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 security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.

Severity: High
Title: X.Org X server, XWayland: Multiple Vulnerabilities
Date: June 12, 2025
Bugs: #950290
ID: 202506-04

Topics%20covered

Topics Covered

security advisory gentoo privilege escalation high xorg-server xwayland

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.

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Affected Packages

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

Impact

Please review the referenced CVE identifiers for details.

Workaround

There is no known workaround at this time.

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