USN-4905-1: X.Org X Server vulnerability
13 April 2021
X.Org X Server could be made to crash or run programs if it received specially crafted input.
Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled
certain lengths of XInput extension ChangeFeedbackControl requests. An
attacker could use this issue to cause the server to crash, resulting in a
denial of service, or possibly execute arbitrary code.
The problem can be corrected by updating your system to the following package versions:
After a standard system update you need to reboot your computer to make all
the necessary changes.