RHSA-2026:49605: Important: xorg-x11-server security update
Important: xorg-x11-server security update
Other sources
X.Org is an open-source implementation of the X Window System. It provides the basic low-level functionality that full-fledged graphical user interfaces are designed upon.Security Fix(es): xorg: X11: xserver: X.org: glamor Font Atlas Heap Buffer Overflow (CVE-2026-55999) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
— Red Hat
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
redhat/xorg-x11-serverto a version that resolves this vulnerability.Fixed in 1.20.11-8.el8_6.1 - Upgrade
Upgrade
redhat/xorg-x11-server-commonto a version that resolves this vulnerability.Fixed in 1.20.11-8.el8_6.1 - Upgrade
Upgrade
redhat/xorg-x11-server-debuginfoto a version that resolves this vulnerability.Fixed in 1.20.11-8.el8_6.1 - Upgrade
Upgrade
redhat/xorg-x11-server-debugsourceto a version that resolves this vulnerability.Fixed in 1.20.11-8.el8_6.1
Event History
Frequently Asked Questions
What is the severity of RHSA-2026:49605?
The severity of RHSA-2026:49605 is high with a score of 7.
How do I fix RHSA-2026:49605?
To fix RHSA-2026:49605, apply the latest security update for xorg-x11-server provided by Red Hat.
What type of vulnerability is identified in RHSA-2026:49605?
RHSA-2026:49605 is identified as a buffer overflow vulnerability.
When was RHSA-2026:49605 published?
RHSA-2026:49605 was published on August 3, 2026.
What software is affected by RHSA-2026:49605?
The software affected by RHSA-2026:49605 includes the xorg-x11-server package in Red Hat Enterprise Linux.