USN-3311-1: libnl vulnerability

6 June 2017

libnl3 vulnerability

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

  • Ubuntu 17.04
  • Ubuntu 16.10
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS


libnl could be made to crash or run programs.

Software Description

  • libnl3 - library for dealing with netlink sockets


It was discovered that libnl incorrectly handled memory when performing certain operations. A local attacker could possibly use this issue to cause libnl to crash, resulting in a denial of service, or execute arbitrary code.

Update instructions

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

Ubuntu 17.04
libnl-3-200 - 3.2.29-0ubuntu2.1
Ubuntu 16.10
libnl-3-200 - 3.2.27-1ubuntu0.16.10.1
Ubuntu 16.04 LTS
libnl-3-200 - 3.2.27-1ubuntu0.16.04.1
Ubuntu 14.04 LTS
libnl-3-200 - 3.2.21-1ubuntu4.1

To update your system, please follow these instructions:

After a standard system update you need to reboot your computer to make all the necessary changes.