# CVE-2021-4011: xorg-x11-server-common: X.Org is an open-source implementation of the X Window System

CVE-2021-4011 is fixed in 36 products on 1 platform, first by xdmx 2:1.19.6-1ubuntu4.10, released December 14, 2021. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2021-4011
- Priority: High
- CVSS: 7.8 (Moderate)
- EPSS: 0.0061
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Dec 14, 2021

## Description

X.Org is an open-source implementation of the X Window System. It provides the basic low-level functionality that full-fledged graphical user interfaces are designed upon.  Xwayland is an X server for running X clients under Wayland.  The following packages have been upgraded to a later upstream version: xorg-x11-server-Xwayland (21.1.3). (BZ#2015842)  Security Fix(es):  * xorg-x11-server: SProcRenderCompositeGlyphs out-of-bounds access (CVE-2021-4008)  * xorg-x11-server: SProcXFixesCreatePointerBarrier out-of-bounds access (CVE-2021-4009)  * xorg-x11-server: SProcScreenSaverSuspend out-of-bounds access (CVE-2021-4010)  * xorg-x11-server: SwapCreateRegister out-of-bounds access (CVE-2021-4011)  For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.  Additional Changes:  For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.6 Release Notes linked from the References section.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | xdmx Ubuntu 18.04.6 LTS (bionic) | 2:1.19.6-1ubuntu4.10 | [xdmx 2:1.19.6-1ubuntu4.10](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xdmx-2-1.19.6-1ubuntu4.10.md) | Dec 14, 2021 |
| Linux | xdmx Ubuntu 20.04 LTS (focal) | 2:1.20.13-1ubuntu1~20.04.2 | [xdmx 2:1.20.13-1ubuntu1~20.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-xdmx-2-1.20.13-1ubuntu1-20.04.2.md) | Dec 14, 2021 |
| Linux | xdmx Ubuntu 22.04.1 LTS (jammy) | 2:1.20.13-1ubuntu2 | [xdmx 2:1.20.13-1ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-xdmx-2-1.20.13-1ubuntu2.md) | Dec 14, 2021 |
| Linux | xdmx-tools Ubuntu 18.04.6 LTS (bionic) | 2:1.19.6-1ubuntu4.10 | [xdmx-tools 2:1.19.6-1ubuntu4.10](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xdmx-tools-2-1.19.6-1ubuntu4.10.md) | Dec 14, 2021 |
| Linux | xdmx-tools Ubuntu 20.04 LTS (focal) | 2:1.20.13-1ubuntu1~20.04.2 | [xdmx-tools 2:1.20.13-1ubuntu1~20.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-xdmx-tools-2-1.20.13-1ubuntu1-20.04.2.md) | Dec 14, 2021 |
| Linux | xdmx-tools Ubuntu 22.04.1 LTS (jammy) | 2:1.20.13-1ubuntu2 | [xdmx-tools 2:1.20.13-1ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-xdmx-tools-2-1.20.13-1ubuntu2.md) | Dec 14, 2021 |
| Linux | xmir Ubuntu 18.04.6 LTS (bionic) | 2:1.19.6-1ubuntu4.10 | [xmir 2:1.19.6-1ubuntu4.10](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xmir-2-1.19.6-1ubuntu4.10.md) | Dec 14, 2021 |
| Linux | xnest Ubuntu 18.04.6 LTS (bionic) | 2:1.19.6-1ubuntu4.10 | [xnest 2:1.19.6-1ubuntu4.10](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xnest-2-1.19.6-1ubuntu4.10.md) | Dec 14, 2021 |
| Linux | xnest Ubuntu 20.04 LTS (focal) | 2:1.20.13-1ubuntu1~20.04.2 | [xnest 2:1.20.13-1ubuntu1~20.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-xnest-2-1.20.13-1ubuntu1-20.04.2.md) | Dec 14, 2021 |
| Linux | xnest Ubuntu 22.04.1 LTS (jammy) | 2:1.20.13-1ubuntu2 | [xnest 2:1.20.13-1ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-xnest-2-1.20.13-1ubuntu2.md) | Dec 14, 2021 |
| Linux | xorg-server Debian 12.15 (bookworm) | 2:1.20.13-3 | [DEBIAN-CVE-2021-4011](https://patchblox.com/security/data/fix/linux/debian-cve-2021-4011.md) | Dec 17, 2021 |
| Linux | xorg-server Debian 13.5 (trixie) | 2:1.20.13-3 | [DEBIAN-CVE-2021-4011](https://patchblox.com/security/data/fix/linux/debian-cve-2021-4011.md) | Dec 17, 2021 |
| Linux | xorg-server Debian 14 | 2:1.20.13-3 | [DEBIAN-CVE-2021-4011](https://patchblox.com/security/data/fix/linux/debian-cve-2021-4011.md) | Dec 17, 2021 |
| Linux | xorg-server-source Ubuntu 18.04.6 LTS (bionic) | 2:1.19.6-1ubuntu4.10 | [xorg-server-source 2:1.19.6-1ubuntu4.10](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xorg-server-source-2-1.19.6-1ubuntu4.10.md) | Dec 14, 2021 |
| Linux | xorg-server-source Ubuntu 20.04 LTS (focal) | 2:1.20.13-1ubuntu1~20.04.2 | [xorg-server-source 2:1.20.13-1ubuntu1~20.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-xorg-server-source-2-1.20.13-1ubuntu1-20.04.2.md) | Dec 14, 2021 |
| Linux | xorg-server-source Ubuntu 22.04.1 LTS (jammy) | 2:1.20.13-1ubuntu2 | [xorg-server-source 2:1.20.13-1ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-xorg-server-source-2-1.20.13-1ubuntu2.md) | Dec 14, 2021 |
| Linux | xorg-server-source-hwe-18.04 Ubuntu 18.04.6 LTS (bionic) | 2:1.20.8-2ubuntu2.2~18.04.6 | [xorg-server-source-hwe-18.04 2:1.20.8-2ubuntu2.2~18.04.6](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xorg-server-source-hwe-18.04-2-1.20.8-2ubuntu2.2-18.04.6.md) | Dec 14, 2021 |
| Linux | xorg-x11-server rocky 8 | 0:1.20.11-5.el8 | [RLSA-2022:1917](https://patchblox.com/security/data/fix/linux/rlsa-2022-1917.md) | May 10, 2022 |
| Linux | xorg-x11-server-Xdmx RHEL 8 | 0:1.20.11-5.el8 | [RHSA-2022:1917](https://patchblox.com/security/data/fix/linux/rhsa-2022-1917.md) | May 10, 2022 |
| Linux | xorg-x11-server-Xdmx almalinux 8 | 1.20.11-5.el8 | [ALSA-2022:1917](https://patchblox.com/security/data/fix/linux/alsa-2022-1917.md) | May 10, 2022 |
| Linux | xorg-x11-server-Xdmx amzn 2023 | 1.20.14-12.amzn2023.0.2 | [ALAS2023-2023-102](https://patchblox.com/security/data/fix/linux/alas2023-2023-102.md) | Feb 17, 2023 |
| Linux | xorg-x11-server-Xdmx ol 8 | 0:1.20.11-5.el8 | [ELSA-2022-1917](https://patchblox.com/security/data/fix/linux/elsa-2022-1917.md) | May 17, 2022 |
| Linux | xorg-x11-server-Xdmx-debuginfo amzn 2023 | 1.20.14-12.amzn2023.0.2 | [ALAS2023-2023-102](https://patchblox.com/security/data/fix/linux/alas2023-2023-102.md) | Feb 17, 2023 |
| Linux | xorg-x11-server-Xephyr RHEL 8 | 0:1.20.11-5.el8 | [RHSA-2022:1917](https://patchblox.com/security/data/fix/linux/rhsa-2022-1917.md) | May 10, 2022 |
| Linux | xorg-x11-server-Xephyr almalinux 8 | 1.20.11-5.el8 | [ALSA-2022:1917](https://patchblox.com/security/data/fix/linux/alsa-2022-1917.md) | May 10, 2022 |
| Linux | xorg-x11-server-Xephyr amzn 2023 | 1.20.14-12.amzn2023.0.2 | [ALAS2023-2023-102](https://patchblox.com/security/data/fix/linux/alas2023-2023-102.md) | Feb 17, 2023 |
| Linux | xorg-x11-server-Xephyr ol 8 | 0:1.20.11-5.el8 | [ELSA-2022-1917](https://patchblox.com/security/data/fix/linux/elsa-2022-1917.md) | May 17, 2022 |
| Linux | xorg-x11-server-Xephyr-debuginfo amzn 2023 | 1.20.14-12.amzn2023.0.2 | [ALAS2023-2023-102](https://patchblox.com/security/data/fix/linux/alas2023-2023-102.md) | Feb 17, 2023 |
| Linux | xorg-x11-server-Xnest RHEL 8 | 0:1.20.11-5.el8 | [RHSA-2022:1917](https://patchblox.com/security/data/fix/linux/rhsa-2022-1917.md) | May 10, 2022 |
| Linux | xorg-x11-server-Xnest almalinux 8 | 1.20.11-5.el8 | [ALSA-2022:1917](https://patchblox.com/security/data/fix/linux/alsa-2022-1917.md) | May 10, 2022 |
| Linux | xorg-x11-server-Xnest amzn 2023 | 1.20.14-12.amzn2023.0.2 | [ALAS2023-2023-102](https://patchblox.com/security/data/fix/linux/alas2023-2023-102.md) | Feb 17, 2023 |
| Linux | xorg-x11-server-Xnest ol 8 | 0:1.20.11-5.el8 | [ELSA-2022-1917](https://patchblox.com/security/data/fix/linux/elsa-2022-1917.md) | May 17, 2022 |
| Linux | xorg-x11-server-Xnest-debuginfo amzn 2023 | 1.20.14-12.amzn2023.0.2 | [ALAS2023-2023-102](https://patchblox.com/security/data/fix/linux/alas2023-2023-102.md) | Feb 17, 2023 |
| Linux | xorg-x11-server-Xorg RHEL 8 | 0:1.20.11-5.el8 | [RHSA-2022:1917](https://patchblox.com/security/data/fix/linux/rhsa-2022-1917.md) | May 10, 2022 |
| Linux | xorg-x11-server-Xorg almalinux 8 | 1.20.11-5.el8 | [ALSA-2022:1917](https://patchblox.com/security/data/fix/linux/alsa-2022-1917.md) | May 10, 2022 |
| Linux | xorg-x11-server-Xorg amzn 2023 | 1.20.14-12.amzn2023.0.2 | [ALAS2023-2023-102](https://patchblox.com/security/data/fix/linux/alas2023-2023-102.md) | Feb 17, 2023 |
| Linux | xorg-x11-server-Xorg ol 8 | 0:1.20.11-5.el8 | [ELSA-2022-1917](https://patchblox.com/security/data/fix/linux/elsa-2022-1917.md) | May 17, 2022 |
| Linux | xorg-x11-server-Xorg-debuginfo amzn 2023 | 1.20.14-12.amzn2023.0.2 | [ALAS2023-2023-102](https://patchblox.com/security/data/fix/linux/alas2023-2023-102.md) | Feb 17, 2023 |
| Linux | xorg-x11-server-Xvfb RHEL 8 | 0:1.20.11-5.el8 | [RHSA-2022:1917](https://patchblox.com/security/data/fix/linux/rhsa-2022-1917.md) | May 10, 2022 |
| Linux | xorg-x11-server-Xvfb almalinux 8 | 1.20.11-5.el8 | [ALSA-2022:1917](https://patchblox.com/security/data/fix/linux/alsa-2022-1917.md) | May 10, 2022 |
| Linux | xorg-x11-server-Xvfb amzn 2023 | 1.20.14-12.amzn2023.0.2 | [ALAS2023-2023-102](https://patchblox.com/security/data/fix/linux/alas2023-2023-102.md) | Feb 17, 2023 |
| Linux | xorg-x11-server-Xvfb ol 8 | 0:1.20.11-5.el8 | [ELSA-2022-1917](https://patchblox.com/security/data/fix/linux/elsa-2022-1917.md) | May 17, 2022 |
| Linux | xorg-x11-server-Xvfb-debuginfo amzn 2023 | 1.20.14-12.amzn2023.0.2 | [ALAS2023-2023-102](https://patchblox.com/security/data/fix/linux/alas2023-2023-102.md) | Feb 17, 2023 |
| Linux | xorg-x11-server-Xwayland RHEL 8 | 0:21.1.3-2.el8 | [RHSA-2022:1917](https://patchblox.com/security/data/fix/linux/rhsa-2022-1917.md) | May 10, 2022 |
| Linux | xorg-x11-server-Xwayland almalinux 8 | 21.1.3-2.el8 | [ALSA-2022:1917](https://patchblox.com/security/data/fix/linux/alsa-2022-1917.md) | May 10, 2022 |
| Linux | xorg-x11-server-Xwayland ol 8 | 0:21.1.3-2.el8 | [ELSA-2022-1917](https://patchblox.com/security/data/fix/linux/elsa-2022-1917.md) | May 17, 2022 |
| Linux | xorg-x11-server-Xwayland rocky 8 | 0:21.1.3-2.el8 | [RLSA-2022:1917](https://patchblox.com/security/data/fix/linux/rlsa-2022-1917.md) | May 10, 2022 |
| Linux | xorg-x11-server-common RHEL 8 | 0:1.20.11-5.el8 | [RHSA-2022:1917](https://patchblox.com/security/data/fix/linux/rhsa-2022-1917.md) | May 10, 2022 |
| Linux | xorg-x11-server-common almalinux 8 | 1.20.11-5.el8 | [ALSA-2022:1917](https://patchblox.com/security/data/fix/linux/alsa-2022-1917.md) | May 10, 2022 |
| Linux | xorg-x11-server-common amzn 2023 | 1.20.14-12.amzn2023.0.2 | [ALAS2023-2023-102](https://patchblox.com/security/data/fix/linux/alas2023-2023-102.md) | Feb 17, 2023 |
| Linux | xorg-x11-server-common ol 8 | 0:1.20.11-5.el8 | [ELSA-2022-1917](https://patchblox.com/security/data/fix/linux/elsa-2022-1917.md) | May 17, 2022 |
| Linux | xorg-x11-server-debuginfo amzn 2023 | 1.20.14-12.amzn2023.0.2 | [ALAS2023-2023-102](https://patchblox.com/security/data/fix/linux/alas2023-2023-102.md) | Feb 17, 2023 |
| Linux | xorg-x11-server-debugsource amzn 2023 | 1.20.14-12.amzn2023.0.2 | [ALAS2023-2023-102](https://patchblox.com/security/data/fix/linux/alas2023-2023-102.md) | Feb 17, 2023 |
| Linux | xorg-x11-server-devel RHEL 8 | 0:1.20.11-5.el8 | [RHSA-2022:1917](https://patchblox.com/security/data/fix/linux/rhsa-2022-1917.md) | May 10, 2022 |
| Linux | xorg-x11-server-devel almalinux 8 | 1.20.11-5.el8 | [ALSA-2022:1917](https://patchblox.com/security/data/fix/linux/alsa-2022-1917.md) | May 10, 2022 |
| Linux | xorg-x11-server-devel amzn 2023 | 1.20.14-12.amzn2023.0.2 | [ALAS2023-2023-102](https://patchblox.com/security/data/fix/linux/alas2023-2023-102.md) | Feb 17, 2023 |
| Linux | xorg-x11-server-devel ol 8 | 0:1.20.11-5.el8 | [ELSA-2022-1917](https://patchblox.com/security/data/fix/linux/elsa-2022-1917.md) | May 17, 2022 |
| Linux | xorg-x11-server-source RHEL 8 | 0:1.20.11-5.el8 | [RHSA-2022:1917](https://patchblox.com/security/data/fix/linux/rhsa-2022-1917.md) | May 10, 2022 |
| Linux | xorg-x11-server-source almalinux 8 | 1.20.11-5.el8 | [ALSA-2022:1917](https://patchblox.com/security/data/fix/linux/alsa-2022-1917.md) | May 10, 2022 |
| Linux | xorg-x11-server-source amzn 2023 | 1.20.14-12.amzn2023.0.2 | [ALAS2023-2023-102](https://patchblox.com/security/data/fix/linux/alas2023-2023-102.md) | Feb 17, 2023 |
| Linux | xorg-x11-server-source ol 8 | 0:1.20.11-5.el8 | [ELSA-2022-1917](https://patchblox.com/security/data/fix/linux/elsa-2022-1917.md) | May 17, 2022 |
| Linux | xserver-common Ubuntu 18.04.6 LTS (bionic) | 2:1.19.6-1ubuntu4.10 | [xserver-common 2:1.19.6-1ubuntu4.10](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xserver-common-2-1.19.6-1ubuntu4.10.md) | Dec 14, 2021 |
| Linux | xserver-common Ubuntu 20.04 LTS (focal) | 2:1.20.13-1ubuntu1~20.04.2 | [xserver-common 2:1.20.13-1ubuntu1~20.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-xserver-common-2-1.20.13-1ubuntu1-20.04.2.md) | Dec 14, 2021 |
| Linux | xserver-common Ubuntu 22.04.1 LTS (jammy) | 2:1.20.13-1ubuntu2 | [xserver-common 2:1.20.13-1ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-xserver-common-2-1.20.13-1ubuntu2.md) | Dec 14, 2021 |
| Linux | xserver-xephyr Ubuntu 18.04.6 LTS (bionic) | 2:1.19.6-1ubuntu4.10 | [xserver-xephyr 2:1.19.6-1ubuntu4.10](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xserver-xephyr-2-1.19.6-1ubuntu4.10.md) | Dec 14, 2021 |
| Linux | xserver-xephyr Ubuntu 20.04 LTS (focal) | 2:1.20.13-1ubuntu1~20.04.2 | [xserver-xephyr 2:1.20.13-1ubuntu1~20.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-xserver-xephyr-2-1.20.13-1ubuntu1-20.04.2.md) | Dec 14, 2021 |
| Linux | xserver-xephyr Ubuntu 22.04.1 LTS (jammy) | 2:1.20.13-1ubuntu2 | [xserver-xephyr 2:1.20.13-1ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-xserver-xephyr-2-1.20.13-1ubuntu2.md) | Dec 14, 2021 |
| Linux | xserver-xephyr-hwe-18.04 Ubuntu 18.04.6 LTS (bionic) | 2:1.20.8-2ubuntu2.2~18.04.6 | [xserver-xephyr-hwe-18.04 2:1.20.8-2ubuntu2.2~18.04.6](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xserver-xephyr-hwe-18.04-2-1.20.8-2ubuntu2.2-18.04.6.md) | Dec 14, 2021 |
| Linux | xserver-xorg-core Ubuntu 18.04.6 LTS (bionic) | 2:1.19.6-1ubuntu4.10 | [xserver-xorg-core 2:1.19.6-1ubuntu4.10](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xserver-xorg-core-2-1.19.6-1ubuntu4.10.md) | Dec 14, 2021 |
| Linux | xserver-xorg-core Ubuntu 20.04 LTS (focal) | 2:1.20.13-1ubuntu1~20.04.2 | [xserver-xorg-core 2:1.20.13-1ubuntu1~20.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-xserver-xorg-core-2-1.20.13-1ubuntu1-20.04.2.md) | Dec 14, 2021 |
| Linux | xserver-xorg-core Ubuntu 22.04.1 LTS (jammy) | 2:1.20.13-1ubuntu2 | [xserver-xorg-core 2:1.20.13-1ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-xserver-xorg-core-2-1.20.13-1ubuntu2.md) | Dec 14, 2021 |
| Linux | xserver-xorg-core-hwe-18.04 Ubuntu 18.04.6 LTS (bionic) | 2:1.20.8-2ubuntu2.2~18.04.6 | [xserver-xorg-core-hwe-18.04 2:1.20.8-2ubuntu2.2~18.04.6](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xserver-xorg-core-hwe-18.04-2-1.20.8-2ubuntu2.2-18.04.6.md) | Dec 14, 2021 |
| Linux | xserver-xorg-dev-hwe-18.04 Ubuntu 18.04.6 LTS (bionic) | 2:1.20.8-2ubuntu2.2~18.04.6 | [xserver-xorg-dev-hwe-18.04 2:1.20.8-2ubuntu2.2~18.04.6](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xserver-xorg-dev-hwe-18.04-2-1.20.8-2ubuntu2.2-18.04.6.md) | Dec 14, 2021 |
| Linux | xserver-xorg-legacy Ubuntu 18.04.6 LTS (bionic) | 2:1.19.6-1ubuntu4.10 | [xserver-xorg-legacy 2:1.19.6-1ubuntu4.10](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xserver-xorg-legacy-2-1.19.6-1ubuntu4.10.md) | Dec 14, 2021 |
| Linux | xserver-xorg-legacy Ubuntu 20.04 LTS (focal) | 2:1.20.13-1ubuntu1~20.04.2 | [xserver-xorg-legacy 2:1.20.13-1ubuntu1~20.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-xserver-xorg-legacy-2-1.20.13-1ubuntu1-20.04.2.md) | Dec 14, 2021 |
| Linux | xserver-xorg-legacy Ubuntu 22.04.1 LTS (jammy) | 2:1.20.13-1ubuntu2 | [xserver-xorg-legacy 2:1.20.13-1ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-xserver-xorg-legacy-2-1.20.13-1ubuntu2.md) | Dec 14, 2021 |
| Linux | xserver-xorg-legacy-hwe-18.04 Ubuntu 18.04.6 LTS (bionic) | 2:1.20.8-2ubuntu2.2~18.04.6 | [xserver-xorg-legacy-hwe-18.04 2:1.20.8-2ubuntu2.2~18.04.6](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xserver-xorg-legacy-hwe-18.04-2-1.20.8-2ubuntu2.2-18.04.6.md) | Dec 14, 2021 |
| Linux | xserver-xorg-xmir Ubuntu 18.04.6 LTS (bionic) | 2:1.19.6-1ubuntu4.10 | [xserver-xorg-xmir 2:1.19.6-1ubuntu4.10](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xserver-xorg-xmir-2-1.19.6-1ubuntu4.10.md) | Dec 14, 2021 |
| Linux | xvfb Ubuntu 18.04.6 LTS (bionic) | 2:1.19.6-1ubuntu4.10 | [xvfb 2:1.19.6-1ubuntu4.10](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xvfb-2-1.19.6-1ubuntu4.10.md) | Dec 14, 2021 |
| Linux | xvfb Ubuntu 20.04 LTS (focal) | 2:1.20.13-1ubuntu1~20.04.2 | [xvfb 2:1.20.13-1ubuntu1~20.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-xvfb-2-1.20.13-1ubuntu1-20.04.2.md) | Dec 14, 2021 |
| Linux | xvfb Ubuntu 22.04.1 LTS (jammy) | 2:1.20.13-1ubuntu2 | [xvfb 2:1.20.13-1ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-xvfb-2-1.20.13-1ubuntu2.md) | Dec 14, 2021 |
| Linux | xwayland Debian 12.15 (bookworm) | 2:21.1.4-1 | [DEBIAN-CVE-2021-4011](https://patchblox.com/security/data/fix/linux/debian-cve-2021-4011.md) | Dec 17, 2021 |
| Linux | xwayland Debian 13.5 (trixie) | 2:21.1.4-1 | [DEBIAN-CVE-2021-4011](https://patchblox.com/security/data/fix/linux/debian-cve-2021-4011.md) | Dec 17, 2021 |
| Linux | xwayland Debian 14 | 2:21.1.4-1 | [DEBIAN-CVE-2021-4011](https://patchblox.com/security/data/fix/linux/debian-cve-2021-4011.md) | Dec 17, 2021 |
| Linux | xwayland Ubuntu 18.04.6 LTS (bionic) | 2:1.19.6-1ubuntu4.10 | [xwayland 2:1.19.6-1ubuntu4.10](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xwayland-2-1.19.6-1ubuntu4.10.md) | Dec 14, 2021 |
| Linux | xwayland Ubuntu 20.04 LTS (focal) | 2:1.20.13-1ubuntu1~20.04.2 | [xwayland 2:1.20.13-1ubuntu1~20.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-xwayland-2-1.20.13-1ubuntu1-20.04.2.md) | Dec 14, 2021 |
| Linux | xwayland Ubuntu 22.04.1 LTS (jammy) | 2:21.1.3-1ubuntu1 | [xwayland 2:21.1.3-1ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-xwayland-2-21.1.3-1ubuntu1.md) | Dec 14, 2021 |
| Linux | xwayland-hwe-18.04 Ubuntu 18.04.6 LTS (bionic) | 2:1.20.8-2ubuntu2.2~18.04.6 | [xwayland-hwe-18.04 2:1.20.8-2ubuntu2.2~18.04.6](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xwayland-hwe-18.04-2-1.20.8-2ubuntu2.2-18.04.6.md) | Dec 14, 2021 |

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Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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