USN-5193-1: X.Org X Server vulnerabilities
14 December 2021
Several security issues were fixed in X.Org X Server.
Releases
Packages
- xorg-server - X.Org X11 server
- xorg-server-hwe-18.04 - X.Org X11 server
- xwayland - Xwayland X server
Details
Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled
certain inputs. An attacker could use this issue to cause the server to
crash, resulting in a denial of service, or possibly execute arbitrary
code and escalate privileges.
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 21.10
Ubuntu 21.04
Ubuntu 20.04
Ubuntu 18.04
After a standard system update you need to reboot your computer to make all
the necessary changes.
References
Related notices
- USN-5193-2: xserver-xephyr, xserver-xorg-xmir, xserver-xorg-legacy, xdmx-tools, xdmx, xorg-server, xserver-xorg-core, xserver-common, xwayland, xserver-xorg-dev, xnest, xmir, xorg-server-source, xvfb
- USN-5193-3: xserver-xorg-legacy-hwe-16.04, xorg-server-source-hwe-16.04, xmir-hwe-16.04, xserver-xorg-core-hwe-16.04, xwayland-hwe-16.04, xorg-server-hwe-16.04, xserver-xorg-dev-hwe-16.04, xserver-xephyr-hwe-16.04