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Ubuntu Security Notice USN-7085-1
October 30, 2024

xorg-server, xwayland vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

• Ubuntu 24.10
• Ubuntu 24.04 LTS
• Ubuntu 22.04 LTS
• Ubuntu 20.04 LTS

Summary:

X.Org X Server could be made to crash or run programs if it received
specially crafted data.

Software Description:

• xorg-server: X.Org X11 server
• xwayland: X server for running X clients under Wayland

Details:

Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled
certain memory operations in the X Keyboard Extension. An attacker could
use this issue to cause the X Server to crash, leading to a denial of
service, or possibly execute arbitrary code.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 24.10
xserver-xorg-core 2:21.1.13-2ubuntu1.1
xwayland 2:24.1.2-1ubuntu0.1

Ubuntu 24.04 LTS
xserver-xorg-core 2:21.1.12-1ubuntu1.1
xwayland 2:23.2.6-1ubuntu0.1

Ubuntu 22.04 LTS
xserver-xorg-core 2:21.1.4-2ubuntu1.7~22.04.12
xwayland 2:22.1.1-1ubuntu0.14

Ubuntu 20.04 LTS
xserver-xorg-core 2:1.20.13-1ubuntu1~20.04.18
xwayland 2:1.20.13-1ubuntu1~20.04.18

After a standard system update you need to reboot your computer to make all
the necessary changes.

References:
https://ubuntu.com/security/notices/USN-7085-1
CVE-2024-9632

Package Information:
https://launchpad.net/ubuntu/+source/xorg-server/2:21.1.13-2ubuntu1.1
https://launchpad.net/ubuntu/+source/xwayland/2:24.1.2-1ubuntu0.1
https://launchpad.net/ubuntu/+source/xorg-server/2:21.1.12-1ubuntu1.1
https://launchpad.net/ubuntu/+source/xwayland/2:23.2.6-1ubuntu0.1
https://launchpad.net/ubuntu/+source/xorg-server/2:21.1.4-2ubuntu1.7~22.04.12
https://launchpad.net/ubuntu/+source/xwayland/2:22.1.1-1ubuntu0.14
https://launchpad.net/ubuntu/+source/xorg-server/2:1.20.13-1ubuntu1~20.04.18