Advisory Published

USN-6587-1: X.Org X Server vulnerabilities

First published: Tue Jan 16 2024(Updated: )

Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled memory when processing the DeviceFocusEvent and ProcXIQueryPointer APIs. An attacker could possibly use this issue to cause the X Server to crash, obtain sensitive information, or execute arbitrary code. (CVE-2023-6816) Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled reattaching to a different master device. An attacker could use this issue to cause the X Server to crash, leading to a denial of service, or possibly execute arbitrary code. (CVE-2024-0229) Olivier Fourdan and Donn Seeley discovered that the X.Org X Server incorrectly labeled GLX PBuffers when used with SELinux. An attacker could use this issue to cause the X Server to crash, leading to a denial of service. (CVE-2024-0408) Olivier Fourdan discovered that the X.Org X Server incorrectly handled the curser code when used with SELinux. An attacker could use this issue to cause the X Server to crash, leading to a denial of service. (CVE-2024-0409) Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled memory when processing the XISendDeviceHierarchyEvent API. An attacker could possibly use this issue to cause the X Server to crash, or execute arbitrary code. (CVE-2024-21885) Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled devices being disabled. An attacker could possibly use this issue to cause the X Server to crash, or execute arbitrary code. (CVE-2024-21886)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/xserver-xorg-core<2:21.1.7-3ubuntu2.6
2:21.1.7-3ubuntu2.6
Ubuntu Ubuntu=23.10
All of
ubuntu/xwayland<2:23.2.0-1ubuntu0.4
2:23.2.0-1ubuntu0.4
Ubuntu Ubuntu=23.10
All of
ubuntu/xserver-xorg-core<2:21.1.7-1ubuntu3.6
2:21.1.7-1ubuntu3.6
Ubuntu Ubuntu=23.04
All of
ubuntu/xwayland<2:22.1.8-1ubuntu1.4
2:22.1.8-1ubuntu1.4
Ubuntu Ubuntu=23.04
All of
ubuntu/xserver-xorg-core<2:21.1.4-2ubuntu1.7~22.04.7
2:21.1.4-2ubuntu1.7~22.04.7
Ubuntu Ubuntu=22.04
All of
ubuntu/xwayland<2:22.1.1-1ubuntu0.10
2:22.1.1-1ubuntu0.10
Ubuntu Ubuntu=22.04
All of
ubuntu/xserver-xorg-core<2:1.20.13-1ubuntu1~20.04.14
2:1.20.13-1ubuntu1~20.04.14
Ubuntu Ubuntu=20.04
All of
ubuntu/xwayland<2:1.20.13-1ubuntu1~20.04.14
2:1.20.13-1ubuntu1~20.04.14
Ubuntu Ubuntu=20.04

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Child vulnerabilities

(Contains the following vulnerabilities)

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