USN-3729-1: libxcursor vulnerability

6 August 2018

libxcursor vulnerability

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

  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS


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

Software Description

  • libxcursor - X11 cursor management library


It was discovered that libxcursor incorrectly handled certain files. An attacker could possibly use this issue to cause a denial of service.

Update instructions

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

Ubuntu 16.04 LTS
libxcursor1 - 1:1.1.14-1ubuntu0.16.04.2
Ubuntu 14.04 LTS
libxcursor1 - 1:1.1.14-1ubuntu0.14.04.2

To update your system, please follow these instructions:

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