==========================================================================
Ubuntu Security Notice USN-3622-1
April 09, 2018

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

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

- Ubuntu 17.10
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Wayland could be made to crash or run programs if it opened a specially
crafted file.

Software Description:
- wayland: Wayland compositor infrastructure

Details:

It was discovered that the Wayland Xcursor support incorrectly handled
certain files. An attacker could use these issues 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 17.10:
  libwayland-cursor0              1.14.0-1ubuntu0.1

Ubuntu 16.04 LTS:
  libwayland-bin                  1.12.0-1~ubuntu16.04.3
  libwayland-client0              1.12.0-1~ubuntu16.04.3
  libwayland-cursor0              1.12.0-1~ubuntu16.04.3
  libwayland-dev                  1.12.0-1~ubuntu16.04.3
  libwayland-doc                  1.12.0-1~ubuntu16.04.3
  libwayland-server0              1.12.0-1~ubuntu16.04.3

Ubuntu 14.04 LTS:
  libwayland-cursor0              1.4.0-1ubuntu1.1

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

References:
  https://usn.ubuntu.com/usn/usn-3622-1
  CVE-2017-16612

Package Information:
  https://launchpad.net/ubuntu/+source/wayland/1.14.0-1ubuntu0.1
  https://launchpad.net/ubuntu/+source/wayland/1.12.0-1~ubuntu16.04.3
  https://launchpad.net/ubuntu/+source/wayland/1.4.0-1ubuntu1.1