ALSA-2026:38488

[ALSA-2026:38488] Important: xorg-x11-server-Xwayland security update

Type:

security

Severity:

important

Release date:

2026-07-13

Description:

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.

References:

Updated packages listed below:

Architecture	Package	Checksum
aarch64	xorg-x11-server-Xwayland-21.1.3-20.el8_10.3.aarch64.rpm	fdde1c65ea4d3e566a9ffb9f7239c3843efab06724c28f4ccc86f3a052381678
ppc64le	xorg-x11-server-Xwayland-21.1.3-20.el8_10.3.ppc64le.rpm	5c27cf0f92d47613e99240945ffd15836dcf7e07eb755f3825af07b48fbe2162
s390x	xorg-x11-server-Xwayland-21.1.3-20.el8_10.3.s390x.rpm	b61b7325db21cbab122b1f5bab7aad77562362c1c8dae56f5d97426410ab4c2d
x86_64	xorg-x11-server-Xwayland-21.1.3-20.el8_10.3.x86_64.rpm	4fdb20fe93c76fc701494f180eeb22d22454aefb5db350095b74623491b6d145

Notes:

This page is generated automatically from Red Hat security data and has not been checked for errors. For clarification or corrections please contact the AlmaLinux Packaging Team.