=========================================================================Ubuntu Security Notice USN-3311-1
June 06, 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

Summary:

libnl could be made to crash or run programs.

Software Description:
- libnl3: library for dealing with netlink sockets

Details:

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

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

References:
  https://ubuntu.com/security/notices/USN-3311-1
  CVE-2017-0553

Package Information:
  https://launchpad.net/ubuntu/+source/libnl3/3.2.29-0ubuntu2.1
  https://launchpad.net/ubuntu/+source/libnl3/3.2.27-1ubuntu0.16.10.1
  https://launchpad.net/ubuntu/+source/libnl3/3.2.27-1ubuntu0.16.04.1
  https://launchpad.net/ubuntu/+source/libnl3/3.2.21-1ubuntu4.1