1. Ubuntu Security Notices
  2. USN-5778-2

USN-5778-2: X.Org X Server vulnerabilities

Publication date

16 February 2023

Overview

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

Releases

Packages

Details

USN-5778-1 fixed several vulnerabilities in X.Org. This update provides
the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.

Original advisory details:

Jan-Niklas Sohn discovered that X.Org X Server extensions contained
multiple security issues. An attacker could possibly use these issues to
cause the X Server to crash, execute arbitrary code, or escalate
privileges.

USN-5778-1 fixed several vulnerabilities in X.Org. This update provides
the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.

Original advisory details:

Jan-Niklas Sohn discovered that X.Org X Server extensions contained
multiple security issues. An attacker could possibly use these issues to
cause the X Server to crash, execute arbitrary code, or escalate
privileges.

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
16.04 xenial xwayland –  2:1.18.4-0ubuntu0.12+esm5  
xserver-xorg-core –  2:1.18.4-0ubuntu0.12+esm5  
xserver-xorg-core-hwe-16.04 –  2:1.19.6-1ubuntu4.1~16.04.6+esm4  
xwayland-hwe-16.04 –  2:1.19.6-1ubuntu4.1~16.04.6+esm4  
14.04 trusty xserver-xorg-core –  2:1.15.1-0ubuntu2.11+esm7  

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References

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