Ubuntu 24.10: USN-7085-1 critical: xorg-server denial of service

ubuntu

October 30, 2024

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

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.

Topics Covered

security advisory denial of service software update ubuntu xorg-server memory operations xwayland

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.