[USN-2529-1] Linux kernel (Utopic HWE) vulnerability

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==========================================================================
Ubuntu Security Notice USN-2529-1
March 12, 2015

linux-lts-utopic vulnerability
==========================================================================

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

- Ubuntu 14.04 LTS

Summary:

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

Software Description:
- linux-lts-utopic: Linux hardware enablement kernel from Utopic

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 14.04 LTS:
linux-image-3.16.0-31-generic 3.16.0-31.43~14.04.1
linux-image-3.16.0-31-generic-lpae 3.16.0-31.43~14.04.1
linux-image-3.16.0-31-lowlatency 3.16.0-31.43~14.04.1
linux-image-3.16.0-31-powerpc-e500mc 3.16.0-31.43~14.04.1
linux-image-3.16.0-31-powerpc-smp 3.16.0-31.43~14.04.1
linux-image-3.16.0-31-powerpc64-emb 3.16.0-31.43~14.04.1
linux-image-3.16.0-31-powerpc64-smp 3.16.0-31.43~14.04.1

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

References:
http://www.ubuntu.com/usn/usn-2529-1
CVE-2014-8159

Package Information:
https://launchpad.net/ubuntu/+source/linux-lts-utopic/3.16.0-31.43~14.04.1