USN-3456-1: X.Org X server vulnerabilities
17 October 2017
Several security issues were fixed in the X.Org X server.
It was discovered that the X.Org X server incorrectly handled certain
lengths. An attacker able to connect to an X server, either locally or
remotely, could use these issues to crash the server, or possibly execute
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.