[USN-2527-1] Linux kernel (Trusty HWE) vulnerability

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==========================================================================
Ubuntu Security Notice USN-2527-1
March 12, 2015

linux-lts-trusty 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-lts-trusty: Linux hardware enablement kernel from Trusty

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-3.13.0-46-generic 3.13.0-46.79~precise1
linux-image-3.13.0-46-generic-lpae 3.13.0-46.79~precise1

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

References:
http://www.ubuntu.com/usn/usn-2527-1
CVE-2014-8159

Package Information:
https://launchpad.net/ubuntu/+source/linux-lts-trusty/3.13.0-46.79~precise1