graphite2 could be made to crash or run programs as your login if it opened a specially crafted font.
Yves Younan discovered that graphite2 incorrectly handled certain malformed fonts. If a user or automated system were tricked into opening a specially- crafted font file, a remote attacker could use this issue to cause graphite2 to crash, resulting in a denial of service, or possibly execute arbitrary code.
17 February 2016
A security issue affects these releases of Ubuntu and its derivatives:
graphite2 could be made to crash or run programs as your login if it opened a specially crafted font.
Yves Younan discovered that graphite2 incorrectly handled certain malformed fonts. If a user or automated system were tricked into opening a specially- crafted font file, a remote attacker could use this issue to cause graphite2 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 applications using graphite2, such as LibreOffice, to make all the necessary changes.
Vulmon