A Wayland security update has been released for Ubuntu Linux 18.04 LTS, 20.04 LTS, and 22.04 LTS.

==========================================================================
Ubuntu Security Notice USN-5614-1
September 15, 2022

wayland vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

Wayland could be made to crash or run programs.

Software Description:
- wayland: Wayland compositor infrastructure

Details:

It was discovered that Wayland incorrectly handled reference counting
certain objects. An attacker could use this issue to cause Wayland to
crash, resulting in a denial of service, or possibly execute arbitrary
code.

Update instructions:

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

Ubuntu 22.04 LTS:
libwayland-bin 1.20.0-1ubuntu0.1
libwayland-client0 1.20.0-1ubuntu0.1
libwayland-egl1 1.20.0-1ubuntu0.1
libwayland-server0 1.20.0-1ubuntu0.1

Ubuntu 20.04 LTS:
libwayland-bin 1.18.0-1ubuntu0.1
libwayland-client0 1.18.0-1ubuntu0.1
libwayland-egl1 1.18.0-1ubuntu0.1
libwayland-server0 1.18.0-1ubuntu0.1

Ubuntu 18.04 LTS:
libwayland-bin 1.16.0-1ubuntu1.1~18.04.4
libwayland-client0 1.16.0-1ubuntu1.1~18.04.4
libwayland-egl1 1.16.0-1ubuntu1.1~18.04.4
libwayland-server0 1.16.0-1ubuntu1.1~18.04.4

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

References:
  https://ubuntu.com/security/notices/USN-5614-1
CVE-2021-3782

Package Information:
  https://launchpad.net/ubuntu/+source/wayland/1.20.0-1ubuntu0.1
  https://launchpad.net/ubuntu/+source/wayland/1.18.0-1ubuntu0.1
  https://launchpad.net/ubuntu/+source/wayland/1.16.0-1ubuntu1.1~18.04.4