USN-2526-1: Linux kernel vulnerability

12 March 2015

linux vulnerability

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

  • Ubuntu 12.04 LTS

Summary

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

Software Description

  • linux - Linux kernel

Details

It was discovered that the Linux kernel’s Infiniband subsystem did not properly sanitize its input parameters while registering memory regions from userspace. A local user could exploit this flaw to cause a denial of service (system crash) or to potentially gain administrative privileges.

Update instructions

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

Ubuntu 12.04 LTS
linux-image-3.2.0-77-generic - 3.2.0-77.114
linux-image-3.2.0-77-generic-pae - 3.2.0-77.114
linux-image-3.2.0-77-highbank - 3.2.0-77.114
linux-image-3.2.0-77-omap - 3.2.0-77.114
linux-image-3.2.0-77-powerpc-smp - 3.2.0-77.114
linux-image-3.2.0-77-powerpc64-smp - 3.2.0-77.114
linux-image-3.2.0-77-virtual - 3.2.0-77.114

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References