RHSA-2026:52392: Important: xorg-x11-server-Xwayland security update
Important: xorg-x11-server-Xwayland security update
Other sources
Xwayland is an X server for running X clients under Wayland.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
Event History
Frequently Asked Questions
What is the severity of RHSA-2026:52392?
The severity of RHSA-2026:52392 is high, with a CVSS score of 7.
How do I fix RHSA-2026:52392?
You can fix RHSA-2026:52392 by applying the relevant security update for xorg-x11-server-Xwayland.
What is the main vulnerability addressed in RHSA-2026:52392?
The main vulnerability addressed in RHSA-2026:52392 is a buffer overflow in the glamor Font Atlas.
Which systems are affected by RHSA-2026:52392?
RHSA-2026:52392 affects Red Hat Enterprise Linux Server for Power LE, and Red Hat Enterprise Linux for x86_64.
What is CVE-2026-55999 in relation to RHSA-2026:52392?
CVE-2026-55999 is the specific identifier for the buffer overflow vulnerability described in RHSA-2026:52392.