USN-3220-3: Linux kernel (AWS) vulnerability

Ubuntu Security Notice USN-3220-3

8th March, 2017

linux-aws vulnerability

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

• Ubuntu 16.04 LTS

Summary

The system could be made to crash or run programs as an administrator.

Software description

• linux-aws
  - Linux kernel for Amazon Web Services (AWS) systems
  
  

Details

USN-3220-1 fixed a vulnerability in the Linux kernel. This update
provides the corresponding updates for the Linux kernel for Amazon
Web Services (AWS).

Alexander Popov discovered that the N_HDLC line discipline implementation
in the Linux kernel contained a double-free vulnerability. A local attacker
could use this to cause a denial of service (system crash) or possibly gain
administrative privileges.

Update instructions

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

Ubuntu 16.04 LTS:

To update your system, please follow these instructions: