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A use-after-free flaw was found in xorg-x11-server-Xvfb. This issue occurs in Xvfb with a very specific and legacy configuration (a multi-screen setup with multiple protocol screens, also known as Zaphod mode). If the pointer is warped from a screen 1 to a screen 0, a use-after-free issue may be triggered during shutdown or reset of the Xvfb server, allowing for possible escalation of privileges or denial of service.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade tigervnc-server-minimalUpgrade tigervnc-server-moduleUpgrade tigervnc-iconsUpgrade tigervnc-serverUpgrade tigervnc-selinuxUpgrade tigervnc-licenseUpgrade tigervnc | May 8, 2024 | Oct 25, 2023 |
| Alpine Linux | — | Upgrade xorg-serverUpgrade xwayland | Aug 22, 2024 | Oct 25, 2023 |
| Amazon Linux Ami 2 | — | Upgrade xorg-x11-server-XnestUpgrade xorg-x11-server-XwaylandUpgrade xorg-x11-server-XorgUpgrade xorg-x11-server-XvfbUpgrade xorg-x11-server-debuginfoUpgrade xorg-x11-server-sourceUpgrade xorg-x11-server-commonUpgrade xorg-x11-server-XdmxUpgrade xorg-x11-server-XephyrUpgrade xorg-x11-server-devel | Dec 5, 2023 | Oct 25, 2023 |
| Amazon_linux | — | Upgrade xorg-x11-server | Dec 5, 2023 | Oct 25, 2023 |
| Amazon_linux_2023 | — | Upgrade xorg-x11-server-XorgUpgrade xorg-x11-server-XdmxUpgrade xorg-x11-server-XnestUpgrade xorg-x11-server-Xnest-debuginfoUpgrade xorg-x11-server-Xorg-debuginfoUpgrade xorg-x11-server-debuginfoUpgrade xorg-x11-server-debugsourceUpgrade xorg-x11-server-sourceUpgrade xorg-x11-server-develUpgrade xorg-x11-server-Xephyr-debuginfoUpgrade xorg-x11-server-Xvfb-debuginfoUpgrade xorg-x11-server-Xdmx-debuginfoUpgrade xorg-x11-server-XvfbUpgrade xorg-x11-server-XephyrUpgrade xorg-x11-server-common | Feb 17, 2025 | Oct 25, 2023 |
| Debian | — | No solution exists | May 15, 2025 | Oct 25, 2023 |
| Huawei Euleros 2_0_sp10 | — | Upgrade xorg-x11-server-help | Jan 14, 2025 | Oct 25, 2023 |
| Huawei Euleros 2_0_sp11 | — | Upgrade xorg-x11-server-help | Dec 12, 2024 | Oct 25, 2023 |
| Huawei Euleros 2_0_sp12 | — | Upgrade xorg-x11-server-help | Dec 12, 2024 | Oct 25, 2023 |
| Huawei Euleros 2_0_sp9 | — | Upgrade xorg-x11-server-help | Jan 15, 2025 | Oct 25, 2023 |
| Oracle_linux | — | Upgrade tigervnc-selinuxUpgrade tigervnc-server-minimalUpgrade tigervnc-serverUpgrade tigervnc-iconsUpgrade tigervnc-server-moduleUpgrade tigervncUpgrade tigervnc-license | May 9, 2024 | Oct 25, 2023 |
| Redhat_linux | — | Upgrade tigervnc-iconsUpgrade tigervnc-server-moduleUpgrade tigervnc-server-minimal-debuginfoUpgrade tigervnc-server-minimalUpgrade tigervnc-selinuxUpgrade tigervnc-debugsourceUpgrade tigervnc-serverUpgrade tigervncUpgrade tigervnc-server-debuginfoUpgrade tigervnc-debuginfoNo solution existsUpgrade tigervnc-server-module-debuginfoUpgrade tigervnc-license | May 1, 2024 | Oct 25, 2023 |
| Suse | — | Upgrade xorg-x11-server-extraUpgrade xorg-x11-server-sourceUpgrade xwaylandUpgrade xorg-x11-server-sdkUpgrade xorg-x11-server-waylandUpgrade xorg-x11-server-XvfbUpgrade xwayland-develUpgrade xorg-x11-server | Oct 31, 2023 | Oct 25, 2023 |
| Ubuntu | — | No solution exists | Jun 26, 2025 | Oct 25, 2023 |
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