A flaw was found in X.Org Server Overlay Window. A Use-After-Free may lead to local privilege escalation. If a client explicitly destroys the compositor overlay window (aka COW), the Xserver would leave a dangling pointer to that window in the CompScreen structure, which will trigger a use-after-free later.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade tigervnc-licenseUpgrade xorg-x11-server-XwaylandUpgrade xorg-x11-server-XvfbUpgrade xorg-x11-server-sourceUpgrade tigervnc-iconsUpgrade xorg-x11-server-XorgUpgrade xorg-x11-server-XnestUpgrade xorg-x11-server-commonUpgrade tigervnc-server-minimalUpgrade xorg-x11-server-XephyrUpgrade tigervnc-server-moduleUpgrade xorg-x11-server-XdmxUpgrade xorg-x11-server-develUpgrade tigervncUpgrade tigervnc-selinuxUpgrade tigervnc-server | Apr 6, 2023 | Mar 30, 2023 |
| Centos_linux | — | Upgrade xorg-x11-server-XnestUpgrade tigervnc-serverUpgrade tigervnc-server-moduleUpgrade xorg-x11-server-develUpgrade tigervnc-server-minimalUpgrade xorg-x11-server-XwaylandUpgrade xorg-x11-server-XorgUpgrade tigervnc-iconsUpgrade xorg-x11-server-XdmxUpgrade xorg-x11-server-XvfbUpgrade tigervnc-server-appletUpgrade tigervnc-licenseUpgrade tigervnc-debuginfoUpgrade xorg-x11-server-XephyrUpgrade tigervncUpgrade xorg-x11-server-sourceUpgrade xorg-x11-server-debuginfoUpgrade xorg-x11-server-common | Apr 6, 2023 | Mar 30, 2023 |
| Debian | — | Upgrade xwaylandUpgrade xorg-server | Mar 31, 2023 | Mar 31, 2023 |
| Freebsd | — | Upgrade xorg-serverUpgrade xephyrUpgrade xwayland-develUpgrade xwaylandUpgrade xorg-nestserverUpgrade xorg-vfbserver | Mar 31, 2023 | Mar 29, 2023 |
| Gentoo Linux | — | Upgrade x11-base/xorg-server.Upgrade x11-base/xwayland. | May 31, 2023 | Mar 30, 2023 |
| Huawei Euleros 2_0_sp10 | — | Upgrade xorg-x11-server-help | May 13, 2024 | Mar 30, 2023 |
| Huawei Euleros 2_0_sp11 | — | Upgrade xorg-x11-server-help | Jan 10, 2024 | Mar 30, 2023 |
| Huawei Euleros 2_0_sp8 | — | Upgrade xorg-x11-server-common | Mar 13, 2024 | Mar 30, 2023 |
| Huawei Euleros 2_0_sp9 | — | Upgrade xorg-x11-server-help | Jul 17, 2024 | Mar 30, 2023 |
| Oracle_linux | — | Upgrade tigervnc-licenseUpgrade xorg-x11-server-XnestUpgrade tigervnc-serverUpgrade tigervnc-server-moduleUpgrade tigervncUpgrade xorg-x11-server-develUpgrade xorg-x11-server-XdmxUpgrade xorg-x11-server-XorgUpgrade tigervnc-server-minimalUpgrade tigervnc-iconsUpgrade xorg-x11-server-commonUpgrade xorg-x11-server-sourceUpgrade xorg-x11-server-XephyrUpgrade tigervnc-server-appletUpgrade tigervnc-selinuxUpgrade xorg-x11-server-XvfbUpgrade xorg-x11-server-Xwayland | Apr 5, 2023 | Mar 29, 2023 |
| Redhat_linux | — | Upgrade tigervnc-server-minimalUpgrade xorg-x11-server-Xorg-debuginfoUpgrade tigervnc-selinuxUpgrade xorg-x11-server-XwaylandUpgrade xorg-x11-server-XephyrUpgrade xorg-x11-server-sourceUpgrade xorg-x11-server-XvfbUpgrade xorg-x11-server-XorgUpgrade xorg-x11-server-Xvfb-debuginfoUpgrade tigervnc-debuginfoUpgrade tigervnc-iconsUpgrade tigervnc-server-module-debuginfoUpgrade xorg-x11-server-Xwayland-debuginfoUpgrade xorg-x11-server-commonUpgrade xorg-x11-server-Xdmx-debuginfoUpgrade tigervnc-licenseUpgrade tigervnc-server-appletUpgrade xorg-x11-server-debuginfoNo solution existsUpgrade tigervncUpgrade tigervnc-server-minimal-debuginfoUpgrade xorg-x11-server-Xnest-debuginfoUpgrade xorg-x11-server-XdmxUpgrade xorg-x11-server-develUpgrade tigervnc-serverUpgrade xorg-x11-server-debugsourceUpgrade tigervnc-debugsourceUpgrade xorg-x11-server-XnestUpgrade tigervnc-server-moduleUpgrade tigervnc-server-debuginfoUpgrade xorg-x11-server-Xwayland-debugsourceUpgrade xorg-x11-server-Xephyr-debuginfo | Apr 6, 2023 | Mar 30, 2023 |
| Rocky_linux | — | — | Aug 15, 2024 | Mar 30, 2023 |
| Suse | — | Upgrade xwaylandUpgrade xorg-x11-server-sourceUpgrade xorg-x11-server-XvfbUpgrade xwayland-develUpgrade xorg-x11-server-sdkUpgrade xorg-x11-serverUpgrade xorg-x11-server-extraUpgrade xorg-x11-server-wayland | Mar 30, 2023 | Mar 29, 2023 |
| Ubuntu | — | Upgrade xserver-xorg-core-hwe-18.04Upgrade xwayland-hwe-18.04Upgrade xwaylandUpgrade xserver-xorg-core | Apr 10, 2023 | Mar 30, 2023 |
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub