Ubuntu 4656-1: X.Org X Server vulnerabilities
Summary
Update Instructions
The problem can be corrected by updating your system to the following package versions: Ubuntu 20.10: xserver-xorg-core 2:1.20.9-2ubuntu1.1 Ubuntu 20.04 LTS: xserver-xorg-core 2:1.20.8-2ubuntu2.6 Ubuntu 18.04 LTS: xserver-xorg-core 2:1.19.6-1ubuntu4.8 xserver-xorg-core-hwe-18.04 2:1.20.8-2ubuntu2.2~18.04.4 Ubuntu 16.04 LTS: xserver-xorg-core 2:1.18.4-0ubuntu0.11 xserver-xorg-core-hwe-16.04 2:1.19.6-1ubuntu4.1~16.04.5 After a standard system update you need to reboot your computer to make all the necessary changes.
References
https://ubuntu.com/security/notices/USN-4656-1
CVE-2020-14360, CVE-2020-25712
Package Information
https://launchpad.net/ubuntu/+source/xorg-server/2:1.20.9-2ubuntu1.1 https://launchpad.net/ubuntu/+source/xorg-server/2:1.20.8-2ubuntu2.6 https://launchpad.net/ubuntu/+source/xorg-server/2:1.19.6-1ubuntu4.8 https://launchpad.net/ubuntu/+source/xorg-server-hwe-18.04/2:1.20.8-2ubuntu2.2~18.04.4 https://launchpad.net/ubuntu/+source/xorg-server/2:1.18.4-0ubuntu0.11 https://launchpad.net/ubuntu/+source/xorg-server-hwe-16.04/2:1.19.6-1ubuntu4.1~16.04.5