RLSA-2026:38490

Synopsis

Important: xorg-x11-server-Xwayland security update

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)

* X.org: xorg-x11-server: GLX contextTags Use-After-Free in CommonMakeCurrent() (CVE-2026-56000)

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.

Affected products

Rocky Linux 9 aarch64 Rocky Linux 9 ppc64le Rocky Linux 9 s390x Rocky Linux 9 x86_64

Fixes

2496165 2496193

CVEs

CVE-2026-55999 CVE-2026-56000

Affected packages

Rocky Linux 9 ppc64le - AppStream

xorg-x11-server-Xwayland-0:24.1.9-4.el9_8.3.ppc64le.rpm xorg-x11-server-Xwayland-0:24.1.9-4.el9_8.3.src.rpm xorg-x11-server-Xwayland-debuginfo-0:24.1.9-4.el9_8.3.ppc64le.rpm xorg-x11-server-Xwayland-debugsource-0:24.1.9-4.el9_8.3.ppc64le.rpm

Rocky Linux 9 s390x - AppStream

xorg-x11-server-Xwayland-0:24.1.9-4.el9_8.3.s390x.rpm xorg-x11-server-Xwayland-0:24.1.9-4.el9_8.3.src.rpm xorg-x11-server-Xwayland-debuginfo-0:24.1.9-4.el9_8.3.s390x.rpm xorg-x11-server-Xwayland-debugsource-0:24.1.9-4.el9_8.3.s390x.rpm

Rocky Linux 9 aarch64 - AppStream

xorg-x11-server-Xwayland-0:24.1.9-4.el9_8.3.aarch64.rpm xorg-x11-server-Xwayland-0:24.1.9-4.el9_8.3.src.rpm xorg-x11-server-Xwayland-debuginfo-0:24.1.9-4.el9_8.3.aarch64.rpm xorg-x11-server-Xwayland-debugsource-0:24.1.9-4.el9_8.3.aarch64.rpm

Rocky Linux 9 x86_64 - CRB

xorg-x11-server-Xwayland-0:24.1.9-4.el9_8.3.i686.rpm xorg-x11-server-Xwayland-debuginfo-0:24.1.9-4.el9_8.3.i686.rpm xorg-x11-server-Xwayland-debugsource-0:24.1.9-4.el9_8.3.i686.rpm xorg-x11-server-Xwayland-devel-0:24.1.9-4.el9_8.3.i686.rpm xorg-x11-server-Xwayland-devel-0:24.1.9-4.el9_8.3.x86_64.rpm

Rocky Linux 9 x86_64 - AppStream

xorg-x11-server-Xwayland-0:24.1.9-4.el9_8.3.src.rpm xorg-x11-server-Xwayland-0:24.1.9-4.el9_8.3.x86_64.rpm xorg-x11-server-Xwayland-debuginfo-0:24.1.9-4.el9_8.3.x86_64.rpm xorg-x11-server-Xwayland-debugsource-0:24.1.9-4.el9_8.3.x86_64.rpm

Rocky Linux 9 aarch64 - CRB

xorg-x11-server-Xwayland-devel-0:24.1.9-4.el9_8.3.aarch64.rpm

Rocky Linux 9 ppc64le - CRB

xorg-x11-server-Xwayland-devel-0:24.1.9-4.el9_8.3.ppc64le.rpm

Rocky Linux 9 s390x - CRB

xorg-x11-server-Xwayland-devel-0:24.1.9-4.el9_8.3.s390x.rpm