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Medium RLSA-2026:95281 1 CVE

Moderate: xorg-x11-server-Xwayland security update

Published Nov 6, 2026 · Updated Nov 6, 2026

Ecosystem: Rocky Linux

Summary

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

Security Fix(es):

* xorg-x11-server: xorg-x11-server: arbitrary code execution via out-of-bounds write in XKB keycode handling (CVE-2026-93520)

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.

Fixed packages 1

ReleasePackageFixed in
Rocky Linux · 8 xorg-x11-server-Xwayland 0:21.1.3-20.el8_10.5

Vulnerabilities 1

  • High 7.8
    CVE-2026-93520

    X.Org Server XKB ChangeKeycodeRange Heap Out-of-Bounds Write

    A heap buffer overflow caused by mismatching size calculations between XkbAllocNames and ChangeKeycodeRange in X.org X server before 2.1.25 and XWayland before 24.1.14 could be used by authenticated X clients to crash or potentially execute code in X server c…

    X.Org xwayland xorg-x11-server xorg-server Debian Ubuntu Azure Linux Alpine

References

  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2545908
  • advisory
    https://access.redhat.com/errata/RHSA-2026:95281