USN-3159-2: Linux kernel (OMAP4) vulnerability

Ubuntu Security Notice USN-3159-2

20th December, 2016

linux-ti-omap4 vulnerability

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

• Ubuntu 12.04 LTS

Summary

The system could be made to expose sensitive information.

Software description

• linux-ti-omap4
  - Linux kernel for OMAP4
  
  

Details

It was discovered that a race condition in the procfs environ_read function
in the Linux kernel, leading to an integer underflow. A local attacker
could use this to expose sensitive information (kernel memory).

Update instructions

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

Ubuntu 12.04 LTS:

To update your system, please follow these instructions: