USN-4656-2: X.Org X Server vulnerabilities

07 December 2020

Several security issues were fixed in X.Org X Server.




USN-4656-1 fixed several vulnerabilities in X.Org. This update provides
the corresponding update for Ubuntu 14.04 ESM.

Original advisory details:

Jan-Niklas Sohn discovered that the X.Org X Server XKB extension
incorrectly handled certain inputs. A local attacker could possibly use
this issue to escalate privileges.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 14.04

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

Related notices

  • USN-4656-1: xorg-server-hwe-18.04, xserver-xorg-core-hwe-18.04, xserver-xorg-core, xorg-server, xorg-server-hwe-16.04, xserver-xorg-core-hwe-16.04