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

16 February 2023

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

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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.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 16.04
Ubuntu 14.04

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

Related notices

  • USN-5778-1: xvfb, xwayland-hwe-18.04, xmir, xserver-xorg-dev, xserver-xorg-xmir, xserver-xorg-core-hwe-18.04, xdmx-tools, xwayland, xserver-xorg-legacy-hwe-18.04, xorg-server-source, xserver-xephyr-hwe-18.04, xnest, xserver-xorg-dev-hwe-18.04, xorg-server, xserver-common, xserver-xephyr, xdmx, xserver-xorg-legacy, xorg-server-source-hwe-18.04, xorg-server-hwe-18.04, xserver-xorg-core
  • USN-5846-1: xvfb, xwayland-hwe-18.04, xmir, xserver-xorg-dev, xserver-xorg-xmir, xserver-xorg-core-hwe-18.04, xdmx-tools, xwayland, xserver-xorg-legacy-hwe-18.04, xorg-server-source, xserver-xephyr-hwe-18.04, xnest, xserver-xorg-dev-hwe-18.04, xorg-server, xserver-common, xserver-xephyr, xdmx, xserver-xorg-legacy, xorg-server-source-hwe-18.04, xorg-server-hwe-18.04, xserver-xorg-core