USN-3843-1: pixman vulnerability
11 December 2018
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 14.04 LTS
pixman could be made to crash or run programs if it processed specially crafted instructions.
- pixman - pixel-manipulation library for X and cairo
It was discovered that pixman incorrectly handled the general_composite_rect function. A remote attacker could use this issue to cause pixman to crash, resulting in a denial of service, or possibly execute arbitrary code.
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to restart your session to make all the necessary changes.