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RLSA-2026:11369

Security Mirrored from RHSA-2026:11369
Issued at: 2026-04-29
Updated at: 2026-05-13

Advisory content derived from Red Hat RHSA-2026:11369, © Red Hat, Inc., used under CC BY 4.0, with modifications.

Synopsis

Important: xorg-x11-server-Xwayland security update



Description

Xwayland is an X server for running X clients under Wayland.

Security Fix(es):

* xorg: xwayland: X.Org X server: Denial of Service via integer underflow in XKB compatibility map handling (CVE-2026-33999)

* xorg: xwayland: X.Org X server: Use-after-free vulnerability leads to server crash and potential memory corruption (CVE-2026-34001)

* xorg: xwayland: X.Org X server: Information exposure and denial of service via out-of-bounds memory access (CVE-2026-34003)

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

2451106 2451109 2451113

CVEs

CVE-2026-33999 CVE-2026-34001 CVE-2026-34003

Affected packages

Rocky Linux 9 aarch64 - AppStream

xorg-x11-server-Xwayland-0:23.2.7-6.el9_7.aarch64.rpm xorg-x11-server-Xwayland-0:23.2.7-6.el9_7.src.rpm xorg-x11-server-Xwayland-debuginfo-0:23.2.7-6.el9_7.aarch64.rpm xorg-x11-server-Xwayland-debugsource-0:23.2.7-6.el9_7.aarch64.rpm

Rocky Linux 9 x86_64 - CRB

xorg-x11-server-Xwayland-0:23.2.7-6.el9_7.i686.rpm xorg-x11-server-Xwayland-debuginfo-0:23.2.7-6.el9_7.i686.rpm xorg-x11-server-Xwayland-debugsource-0:23.2.7-6.el9_7.i686.rpm xorg-x11-server-Xwayland-devel-0:23.2.7-6.el9_7.i686.rpm xorg-x11-server-Xwayland-devel-0:23.2.7-6.el9_7.x86_64.rpm

Rocky Linux 9 ppc64le - AppStream

xorg-x11-server-Xwayland-0:23.2.7-6.el9_7.ppc64le.rpm xorg-x11-server-Xwayland-0:23.2.7-6.el9_7.src.rpm xorg-x11-server-Xwayland-debuginfo-0:23.2.7-6.el9_7.ppc64le.rpm xorg-x11-server-Xwayland-debugsource-0:23.2.7-6.el9_7.ppc64le.rpm

Rocky Linux 9 s390x - AppStream

xorg-x11-server-Xwayland-0:23.2.7-6.el9_7.s390x.rpm xorg-x11-server-Xwayland-0:23.2.7-6.el9_7.src.rpm xorg-x11-server-Xwayland-debuginfo-0:23.2.7-6.el9_7.s390x.rpm xorg-x11-server-Xwayland-debugsource-0:23.2.7-6.el9_7.s390x.rpm

Rocky Linux 9 x86_64 - AppStream

xorg-x11-server-Xwayland-0:23.2.7-6.el9_7.src.rpm xorg-x11-server-Xwayland-0:23.2.7-6.el9_7.x86_64.rpm xorg-x11-server-Xwayland-debuginfo-0:23.2.7-6.el9_7.x86_64.rpm xorg-x11-server-Xwayland-debugsource-0:23.2.7-6.el9_7.x86_64.rpm

Rocky Linux 9 aarch64 - CRB

xorg-x11-server-Xwayland-devel-0:23.2.7-6.el9_7.aarch64.rpm

Rocky Linux 9 ppc64le - CRB

xorg-x11-server-Xwayland-devel-0:23.2.7-6.el9_7.ppc64le.rpm

Rocky Linux 9 s390x - CRB

xorg-x11-server-Xwayland-devel-0:23.2.7-6.el9_7.s390x.rpm