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A heap buffer overflow in handling GLX RenderLarge request where dataBytes exceeds cmdlen in X.org X server before 21.1.25 and XWayland before 24.1.14 that could be be triggered by an authenticated X client could cause crashes or code execution in X server context.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade xorg-x11-server-XnestUpgrade xorg-x11-server-XdmxUpgrade xorg-x11-server-develUpgrade xorg-x11-server-commonUpgrade xorg-x11-server-XvfbUpgrade xorg-x11-server-XwaylandUpgrade xorg-x11-server-XorgUpgrade xorg-x11-server-XephyrUpgrade xorg-x11-server-Xwayland-develUpgrade xorg-x11-server-source | Oct 20, 2026 | Oct 19, 2026 |
| Alpine Linux | — | Upgrade xorg-serverUpgrade xwayland | Oct 29, 2026 | Oct 28, 2026 |
| Amazon_linux_2023 | — | Upgrade xorg-x11-server-Xwayland-debugsourceUpgrade xorg-x11-server-debugsourceUpgrade xorg-x11-server-Xvfb-debuginfoUpgrade xorg-x11-server-Xnest-debuginfoUpgrade xorg-x11-server-Xorg-debuginfoUpgrade tigervnc-serverUpgrade tigervnc-server-debuginfoUpgrade xorg-x11-server-XnestUpgrade xorg-x11-server-debuginfoUpgrade xorg-x11-server-Xwayland-develUpgrade xorg-x11-server-XwaylandUpgrade xorg-x11-server-develUpgrade tigervnc-server-minimalUpgrade xorg-x11-server-XephyrUpgrade xorg-x11-server-commonUpgrade tigervnc-licenseUpgrade tigervnc-debugsourceUpgrade tigervnc-server-module-debuginfoUpgrade tigervnc-debuginfoUpgrade tigervnc-server-minimal-debuginfoUpgrade xorg-x11-server-XorgUpgrade xorg-x11-server-sourceUpgrade tigervnc-server-moduleUpgrade tigervnc-selinuxUpgrade tigervnc-iconsUpgrade xorg-x11-server-XvfbUpgrade tigervncUpgrade xorg-x11-server-Xwayland-debuginfoUpgrade xorg-x11-server-Xephyr-debuginfo | Oct 29, 2026 | Oct 28, 2026 |
| Oracle_linux | — | Upgrade xorg-x11-server-commonUpgrade xorg-x11-server-XephyrUpgrade xorg-x11-server-develUpgrade xorg-x11-server-XdmxUpgrade xorg-x11-server-XnestUpgrade xorg-x11-server-sourceUpgrade xorg-x11-server-XvfbUpgrade xorg-x11-server-XwaylandUpgrade xorg-x11-server-Xorg | Oct 29, 2026 | Oct 28, 2026 |
| Redhat_linux | — | No solution existsUpgrade xorg-x11-server-Xwayland-develUpgrade xorg-x11-server-sourceUpgrade xorg-x11-server-XephyrUpgrade xorg-x11-server-Xvfb-debuginfoUpgrade xorg-x11-server-XwaylandUpgrade xorg-x11-server-Xdmx-debuginfoUpgrade xorg-x11-server-XvfbUpgrade xorg-x11-server-Xnest-debuginfoUpgrade xorg-x11-server-XdmxUpgrade xorg-x11-server-Xorg-debuginfoUpgrade xorg-x11-server-commonUpgrade xorg-x11-server-debuginfoUpgrade xorg-x11-server-Xephyr-debuginfoUpgrade xorg-x11-server-XorgUpgrade xorg-x11-server-Xwayland-debuginfoUpgrade xorg-x11-server-Xwayland-debugsourceUpgrade xorg-x11-server-develUpgrade xorg-x11-server-XnestUpgrade xorg-x11-server-debugsource | Oct 13, 2026 | Oct 7, 2026 |
| Rocky_linux | — | Upgrade xorg-x11-server-Xephyr-debuginfoUpgrade xorg-x11-server-XvfbUpgrade xorg-x11-server-Xnest-debuginfoUpgrade xorg-x11-server-Xvfb-debuginfoUpgrade xorg-x11-server-XnestUpgrade xorg-x11-server-XephyrUpgrade xorg-x11-server-develUpgrade xorg-x11-server-Xwayland-debugsourceUpgrade xorg-x11-server-XdmxUpgrade xorg-x11-server-Xorg-debuginfoUpgrade xorg-x11-server-debugsourceUpgrade xorg-x11-server-XorgUpgrade xorg-x11-server-Xdmx-debuginfoUpgrade xorg-x11-server-Xwayland-debuginfoUpgrade xorg-x11-server-debuginfoUpgrade xorg-x11-server-Xwayland-develUpgrade xorg-x11-server-commonUpgrade xorg-x11-server-Xwayland | Oct 22, 2026 | Oct 20, 2026 |
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