USN-2529-1: Linux kernel (Utopic HWE) vulnerability

12 March 2015

linux-lts-utopic vulnerability

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

  • Ubuntu 14.04 LTS


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

Software Description

  • linux-lts-utopic - Linux hardware enablement kernel from Utopic


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

To update your system, please follow these instructions:

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