USN-3237-1: FreeType vulnerability

Ubuntu Security Notice USN-3237-1

20th March, 2017

freetype vulnerability

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

  • Ubuntu 16.10
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS
  • Ubuntu 12.04 LTS


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

Software description

  • freetype - FreeType 2 is a font engine library


It was discovered that FreeType did not correctly handle certain malformed
font files. If a user were tricked into using a specially crafted font
file, a remote attacker could cause FreeType 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 version:

Ubuntu 16.10:
libfreetype6 2.6.3-3ubuntu1.1
Ubuntu 16.04 LTS:
libfreetype6 2.6.1-0.1ubuntu2.1
Ubuntu 14.04 LTS:
libfreetype6 2.5.2-1ubuntu2.6
Ubuntu 12.04 LTS:
libfreetype6 2.4.8-1ubuntu2.4

To update your system, please follow these instructions:

After a standard system update you need to restart your session to make
all the necessary changes.