USN-5740-1: X.Org X Server vulnerabilities

Releases

• Ubuntu 22.10
• Ubuntu 22.04 LTS
• Ubuntu 20.04 LTS
• Ubuntu 18.04 LTS
• Ubuntu 16.04 ESM
• Ubuntu 14.04 ESM

Packages

• xorg-server - X.Org X11 server
• xorg-server-hwe-16.04 - X.Org X11 server
• xorg-server-hwe-18.04 - X.Org X11 server
• xwayland - X server for running X clients under Wayland

Details

It was discovered that X.Org X Server incorrectly handled certain inputs.
An attacker could use these issues to cause the server to crash, resulting
in 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 22.10

• xserver-xorg-core - 2:21.1.4-2ubuntu1.1
• xwayland - 2:22.1.3-2ubuntu0.1

Ubuntu 22.04

• xserver-xorg-core - 2:21.1.3-2ubuntu2.3
• xwayland - 2:22.1.1-1ubuntu0.3

Ubuntu 20.04

• xserver-xorg-core - 2:1.20.13-1ubuntu1~20.04.4
• xwayland - 2:1.20.13-1ubuntu1~20.04.4

Ubuntu 18.04

• xserver-xorg-core - 2:1.19.6-1ubuntu4.12
• xwayland - 2:1.19.6-1ubuntu4.12
• xserver-xorg-core-hwe-18.04 - 2:1.20.8-2ubuntu2.2~18.04.8

Ubuntu 16.04

• xwayland - 2:1.18.4-0ubuntu0.12+esm4
  Available with Ubuntu Pro
• xserver-xorg-core - 2:1.18.4-0ubuntu0.12+esm4
  Available with Ubuntu Pro
• xserver-xorg-core-hwe-16.04 - 2:1.19.6-1ubuntu4.1~16.04.6+esm3
  Available with Ubuntu Pro

Ubuntu 14.04

• xserver-xorg-core - 2:1.15.1-0ubuntu2.11+esm6
  Available with Ubuntu Pro

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

References

• CVE-2022-3550
• CVE-2022-3551