ALSA-2026:19344
ALSA-2026:19344 · Important: xorg-x11-server-Xwayland security update
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
Fix available
- Published
- Updated
Stack: system
Affected products and versions
xorg-x11-server-xwayland AlmaLinux:9
- Affected ranges
- ECOSYSTEM: < 24.1.9-4.el9_8
Update to 24.1.9-4.el9_8
xorg-x11-server-xwayland-devel AlmaLinux:9
- Affected ranges
- ECOSYSTEM: < 24.1.9-4.el9_8
Update to 24.1.9-4.el9_8
Original sources
- https://access.redhat.com/errata/RHSA-2026:19344
- https://access.redhat.com/security/cve/CVE-2026-33999
- https://access.redhat.com/security/cve/CVE-2026-34001
- https://access.redhat.com/security/cve/CVE-2026-34003
- https://bugzilla.redhat.com/2451106
- https://bugzilla.redhat.com/2451109
- https://bugzilla.redhat.com/2451113
- https://errata.almalinux.org/9/ALSA-2026-19344.html
- https://osv.dev/vulnerability/ALSA-2026:19344