USN-2986-1: dosfstools vulnerabilities

31 May 2016

dosfstools vulnerabilities

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

  • Ubuntu 16.04 LTS
  • Ubuntu 15.10
  • Ubuntu 14.04 LTS
  • Ubuntu 12.04 LTS


dosfstools could be made to crash or run programs if it processed a specially crafted filesystem.

Software Description

  • dosfstools - utilities for making and checking MS-DOS FAT filesystems


Hanno Böck discovered that dosfstools incorrectly handled certain malformed filesystems. A local attacker could use this issue to cause dosfstools 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 16.04 LTS
dosfstools - 3.0.28-2ubuntu0.1
Ubuntu 15.10
dosfstools - 3.0.28-1ubuntu0.1
Ubuntu 14.04 LTS
dosfstools - 3.0.26-1ubuntu0.1
Ubuntu 12.04 LTS
dosfstools - 3.0.12-1ubuntu1.3

To update your system, please follow these instructions:

In general, a standard system update will make all the necessary changes.