USN-1045-1: FUSE vulnerability

19 January 2011

fuse vulnerability

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

  • Ubuntu 10.10
  • Ubuntu 10.04 LTS
  • Ubuntu 9.10
  • Ubuntu 8.04 LTS


Software Description

  • fuse


It was discovered that FUSE could be tricked into incorrectly updating the mtab file when mounting filesystems. A local attacker, with access to use FUSE, could unmount arbitrary locations, leading to a denial of service.

Update instructions

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

Ubuntu 10.10
fuse-utils - 2.8.4-1ubuntu1.1
Ubuntu 10.04 LTS
fuse-utils - 2.8.1-1.1ubuntu2.2
Ubuntu 9.10
fuse-utils - 2.7.4-1.1ubuntu4.4
Ubuntu 8.04 LTS
fuse-utils - 2.7.2-1ubuntu2.2

To update your system, please follow these instructions:

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