A use-after-free flaw was found in X.Org and Xwayland. When changing an alarm, the values of the change mask are evaluated one after the other, changing the trigger values as requested, and eventually, SyncInitTrigger() is called. If one of the changes triggers an error, the function will return early, not adding the new sync object, possibly causing a use-after-free when the alarm eventually triggers.
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade tigervnc-server-moduleUpgrade tigervnc-server-minimalUpgrade xorg-x11-server-Xwayland-develUpgrade xorg-x11-server-XwaylandUpgrade xorg-x11-server-XorgUpgrade tigervnc-iconsUpgrade xorg-x11-server-commonUpgrade tigervnc-serverUpgrade tigervnc-licenseUpgrade xorg-x11-server-XnestUpgrade xorg-x11-server-XvfbUpgrade tigervnc-selinuxUpgrade xorg-x11-server-XephyrUpgrade xorg-x11-server-develUpgrade xorg-x11-server-sourceUpgrade xorg-x11-server-XdmxUpgrade tigervnc | Mar 18, 2025 | Feb 25, 2025 |
| Alpine Linux | — | Upgrade xwaylandUpgrade xorg-server | Aug 8, 2025 | Feb 25, 2025 |
| Amazon Linux Ami 2 | — | Upgrade xorg-x11-server-XvfbUpgrade xorg-x11-server-debuginfoUpgrade xorg-x11-server-commonUpgrade xorg-x11-server-XdmxUpgrade xorg-x11-server-develUpgrade xorg-x11-server-XephyrUpgrade xorg-x11-server-sourceUpgrade xorg-x11-server-XorgUpgrade xorg-x11-server-XnestUpgrade xorg-x11-server-Xwayland | Mar 26, 2025 | Feb 25, 2025 |
| Amazon_linux_2023 | — | Upgrade xorg-x11-server-commonUpgrade xorg-x11-server-debugsourceUpgrade xorg-x11-server-Xwayland-debuginfoUpgrade xorg-x11-server-Xephyr-debuginfoUpgrade xorg-x11-server-Xwayland-debugsourceUpgrade xorg-x11-server-debuginfoUpgrade xorg-x11-server-develUpgrade xorg-x11-server-sourceUpgrade xorg-x11-server-XorgUpgrade xorg-x11-server-Xvfb-debuginfoUpgrade xorg-x11-server-Xorg-debuginfoUpgrade xorg-x11-server-XephyrUpgrade xorg-x11-server-XwaylandUpgrade xorg-x11-server-Xwayland-develUpgrade xorg-x11-server-Xnest-debuginfoUpgrade xorg-x11-server-XvfbUpgrade xorg-x11-server-Xnest | Mar 27, 2025 | Feb 25, 2025 |
| Debian | — | Upgrade xorg-serverUpgrade xwayland | Mar 3, 2025 | Feb 25, 2025 |
| Freebsd | — | Upgrade xwaylandUpgrade xorg-vfbserverUpgrade xorg-nextserverUpgrade xorg-serverUpgrade xephyr | Mar 7, 2025 | Mar 6, 2025 |
| Gentoo Linux | — | Upgrade x11-base/xorg-server.Upgrade x11-base/xwayland. | Jun 13, 2025 | Feb 25, 2025 |
| Huawei Euleros 2_0_sp10 | — | Upgrade xorg-x11-server-help | Jul 11, 2025 | Feb 25, 2025 |
| Huawei Euleros 2_0_sp11 | — | Upgrade xorg-x11-server-help | Jun 13, 2025 | Feb 25, 2025 |
| Huawei Euleros 2_0_sp12 | — | Upgrade xorg-x11-server-help | Jul 21, 2025 | Feb 25, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade xorg-x11-server-help | Jul 1, 2025 | Feb 25, 2025 |
| Oracle_linux | — | Upgrade xorg-x11-server-sourceUpgrade tigervnc-server-appletUpgrade xorg-x11-server-develUpgrade tigervncUpgrade xorg-x11-server-XvfbUpgrade xorg-x11-server-XdmxUpgrade xorg-x11-server-XwaylandUpgrade tigervnc-server-minimalUpgrade xorg-x11-server-XephyrUpgrade xorg-x11-server-XnestUpgrade tigervnc-licenseUpgrade tigervnc-iconsUpgrade xorg-x11-server-Xwayland-develUpgrade tigervnc-serverUpgrade tigervnc-selinuxUpgrade tigervnc-server-moduleUpgrade xorg-x11-server-commonUpgrade xorg-x11-server-Xorg | Mar 12, 2025 | Feb 25, 2025 |
| Redhat_linux | — | Upgrade xorg-x11-server-XorgUpgrade xorg-x11-server-debuginfoUpgrade tigervnc-server-minimalUpgrade xorg-x11-server-Xorg-debuginfoUpgrade tigervnc-debuginfoUpgrade xorg-x11-server-XwaylandUpgrade tigervnc-server-moduleUpgrade tigervnc-iconsUpgrade xorg-x11-server-XvfbUpgrade xorg-x11-server-Xdmx-debuginfoUpgrade xorg-x11-server-XephyrUpgrade tigervnc-selinuxUpgrade tigervnc-server-appletUpgrade tigervnc-server-module-debuginfoUpgrade xorg-x11-server-Xwayland-debuginfoUpgrade xorg-x11-server-Xnest-debuginfoUpgrade xorg-x11-server-Xwayland-develUpgrade xorg-x11-server-sourceUpgrade xorg-x11-server-Xephyr-debuginfoUpgrade xorg-x11-server-commonUpgrade tigervnc-debugsourceUpgrade tigervncNo solution existsUpgrade tigervnc-server-minimal-debuginfoUpgrade xorg-x11-server-Xwayland-debugsourceUpgrade xorg-x11-server-debugsourceUpgrade xorg-x11-server-XdmxUpgrade tigervnc-serverUpgrade xorg-x11-server-develUpgrade xorg-x11-server-Xvfb-debuginfoUpgrade tigervnc-server-debuginfoUpgrade tigervnc-licenseUpgrade xorg-x11-server-Xnest | Mar 11, 2025 | Feb 25, 2025 |
| Rocky_linux | — | Upgrade xorg-x11-server-XdmxUpgrade tigervnc-server-module-debuginfoUpgrade xorg-x11-server-Xwayland-debugsourceUpgrade tigervnc-server-moduleUpgrade tigervnc-server-minimalUpgrade xorg-x11-server-Xwayland-debuginfoUpgrade tigervnc-server-minimal-debuginfoUpgrade xorg-x11-server-Xorg-debuginfoUpgrade tigervnc-serverUpgrade tigervnc-debugsourceUpgrade xorg-x11-server-XorgUpgrade xorg-x11-server-Xnest-debuginfoUpgrade tigervncUpgrade xorg-x11-server-XvfbUpgrade xorg-x11-server-XwaylandUpgrade tigervnc-server-debuginfoUpgrade xorg-x11-server-Xwayland-develUpgrade xorg-x11-server-Xvfb-debuginfoUpgrade xorg-x11-server-Xdmx-debuginfoUpgrade xorg-x11-server-Xephyr-debuginfoUpgrade xorg-x11-server-develUpgrade xorg-x11-server-commonUpgrade xorg-x11-server-XnestUpgrade xorg-x11-server-XephyrUpgrade tigervnc-debuginfo | May 8, 2025 | Feb 25, 2025 |
| Suse | — | Upgrade xorg-x11-server-extraUpgrade xorg-x11-server-waylandUpgrade xwayland-develUpgrade xwaylandUpgrade xorg-x11-serverUpgrade xorg-x11-server-XvfbUpgrade xorg-x11-server-sdkUpgrade xorg-x11-server-source | Dec 5, 2025 | Mar 14, 2025 |
| Ubuntu | — | Upgrade xwayland (Ubuntu Pro)Upgrade xserver-xorg-core-hwe-16.04 (Ubuntu Pro)Upgrade xwaylandUpgrade xwayland-hwe-16.04 (Ubuntu Pro)Upgrade xserver-xorg-core-hwe-18.04 (Ubuntu Pro)Upgrade xwayland-hwe-18.04 (Ubuntu Pro)Upgrade xserver-xorg-coreUpgrade xserver-xorg-core (Ubuntu Pro) | Feb 26, 2025 | Feb 25, 2025 |
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