Red Hat Security Advisory

RHSA-2026:95281

xorg-x11-server-Xwayland security update

Released 2026-11-04 · Red Hat rating Moderate · View on Red Hat →

Fixed in

Red Hat Enterprise Linux AppStream (v. 8) xorg-x11-server-Xwayland-21.1.3-20.el8_10.5

Fixes 1 record

TI-2026-82007 CVE-2026-93520 · GHSA-wgf4-w3hh-3mvm

Heap buffer overflow in X.Org X server XKB keycode range handling

LOW 35

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…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00202 Published 2026-10-28 Partial fix · 21.1.25, 24.1.14 CWE-122