RLSA-2026:38489

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 10 aarch64 Rocky Linux 10 ppc64le Rocky Linux 10 riscv64 Rocky Linux 10 s390x Rocky Linux 10 x86_64

Fixes

2496193 2496165

CVEs

CVE-2026-55999 CVE-2026-56000

Affected packages

Rocky Linux 10 ppc64le - AppStream

xorg-x11-server-Xwayland-debuginfo-0:24.1.9-4.el10_2.3.ppc64le.rpm xorg-x11-server-Xwayland-debugsource-0:24.1.9-4.el10_2.3.ppc64le.rpm xorg-x11-server-Xwayland-0:24.1.9-4.el10_2.3.ppc64le.rpm xorg-x11-server-Xwayland-0:24.1.9-4.el10_2.3.src.rpm

Rocky Linux 10 s390x - AppStream

xorg-x11-server-Xwayland-debuginfo-0:24.1.9-4.el10_2.3.s390x.rpm xorg-x11-server-Xwayland-0:24.1.9-4.el10_2.3.src.rpm xorg-x11-server-Xwayland-debugsource-0:24.1.9-4.el10_2.3.s390x.rpm xorg-x11-server-Xwayland-0:24.1.9-4.el10_2.3.s390x.rpm

Rocky Linux 10 x86_64 - CRB

xorg-x11-server-Xwayland-devel-0:24.1.9-4.el10_2.3.x86_64.rpm

Rocky Linux 10 aarch64 - AppStream

xorg-x11-server-Xwayland-debuginfo-0:24.1.9-4.el10_2.3.aarch64.rpm xorg-x11-server-Xwayland-0:24.1.9-4.el10_2.3.aarch64.rpm xorg-x11-server-Xwayland-0:24.1.9-4.el10_2.3.src.rpm xorg-x11-server-Xwayland-debugsource-0:24.1.9-4.el10_2.3.aarch64.rpm

Rocky Linux 10 aarch64 - CRB

xorg-x11-server-Xwayland-devel-0:24.1.9-4.el10_2.3.aarch64.rpm

Rocky Linux 10 x86_64 - AppStream

xorg-x11-server-Xwayland-debuginfo-0:24.1.9-4.el10_2.3.x86_64.rpm xorg-x11-server-Xwayland-0:24.1.9-4.el10_2.3.src.rpm xorg-x11-server-Xwayland-0:24.1.9-4.el10_2.3.x86_64.rpm xorg-x11-server-Xwayland-debugsource-0:24.1.9-4.el10_2.3.x86_64.rpm

Rocky Linux 10 ppc64le - CRB

xorg-x11-server-Xwayland-devel-0:24.1.9-4.el10_2.3.ppc64le.rpm

Rocky Linux 10 riscv64 - AppStream

xorg-x11-server-Xwayland-0:24.1.9-4.el10_2.3.src.rpm

Rocky Linux 10 s390x - CRB

xorg-x11-server-Xwayland-devel-0:24.1.9-4.el10_2.3.s390x.rpm