A buffer overread in CheckKeySyms() in X.Org X Server before 21.1.25 and XWayland before 24.1.14 could be used by authenticated X clients to leak small amounts of information from X server memory or potentially crash the X server.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade xorg-serverUpgrade xwayland | Oct 29, 2026 | Oct 28, 2026 |
| Amazon_linux_2023 | — | Upgrade xorg-x11-server-XephyrUpgrade xorg-x11-server-XnestUpgrade xorg-x11-server-Xvfb-debuginfoUpgrade xorg-x11-server-Xephyr-debuginfoUpgrade xorg-x11-server-XorgUpgrade tigervnc-server-minimal-debuginfoUpgrade tigervncUpgrade xorg-x11-server-develUpgrade tigervnc-debuginfoUpgrade xorg-x11-server-sourceUpgrade xorg-x11-server-XwaylandUpgrade xorg-x11-server-Xwayland-debuginfoUpgrade tigervnc-server-debuginfoUpgrade tigervnc-selinuxUpgrade tigervnc-licenseUpgrade xorg-x11-server-XvfbUpgrade xorg-x11-server-commonUpgrade tigervnc-iconsUpgrade tigervnc-server-moduleUpgrade tigervnc-server-minimalUpgrade xorg-x11-server-debugsourceUpgrade tigervnc-serverUpgrade xorg-x11-server-Xwayland-debugsourceUpgrade xorg-x11-server-Xnest-debuginfoUpgrade xorg-x11-server-Xorg-debuginfoUpgrade tigervnc-debugsourceUpgrade xorg-x11-server-Xwayland-develUpgrade tigervnc-server-module-debuginfoUpgrade xorg-x11-server-debuginfo | Oct 29, 2026 | Oct 28, 2026 |
| Redhat_linux | — | No solution exists | Oct 13, 2026 | Oct 7, 2026 |
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