==========================================================================
Ubuntu Security Notice USN-3249-1
March 29, 2017

linux, linux-aws, linux-gke, linux-raspi2, linux-snapdragon vulnerability
==========================================================================

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

- Ubuntu 16.04 LTS

Summary:

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

Software Description:
- linux: Linux kernel
- linux-aws: Linux kernel for Amazon Web Services (AWS) systems
- linux-gke: Linux kernel for Google Container Engine (GKE) systems
- linux-raspi2: Linux kernel for Raspberry Pi 2
- linux-snapdragon: Linux kernel for Snapdragon Processors

Details:

It was discovered that the xfrm framework for transforming packets in the
Linux kernel did not properly validate data received from user space. A
local attacker could use this to cause a denial of service (system crash)
or execute arbitrary code with administrative privileges.

Update instructions:

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

Ubuntu 16.04 LTS:
  linux-image-4.4.0-1009-gke      4.4.0-1009.9
  linux-image-4.4.0-1012-aws      4.4.0-1012.21
  linux-image-4.4.0-1051-raspi2   4.4.0-1051.58
  linux-image-4.4.0-1054-snapdragon  4.4.0-1054.58
  linux-image-4.4.0-71-generic    4.4.0-71.92
  linux-image-4.4.0-71-generic-lpae  4.4.0-71.92
  linux-image-4.4.0-71-lowlatency  4.4.0-71.92
  linux-image-4.4.0-71-powerpc-e500mc  4.4.0-71.92
  linux-image-4.4.0-71-powerpc-smp  4.4.0-71.92
  linux-image-4.4.0-71-powerpc64-smp  4.4.0-71.92
  linux-image-aws                 4.4.0.1012.15
  linux-image-generic             4.4.0.71.77
  linux-image-generic-lpae        4.4.0.71.77
  linux-image-gke                 4.4.0.1009.11
  linux-image-lowlatency          4.4.0.71.77
  linux-image-powerpc-e500mc      4.4.0.71.77
  linux-image-powerpc-smp         4.4.0.71.77
  linux-image-powerpc64-smp       4.4.0.71.77
  linux-image-raspi2              4.4.0.1051.52
  linux-image-snapdragon          4.4.0.1054.47

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

ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.

References:
  http://www.ubuntu.com/usn/usn-3249-1
  CVE-2017-7184

Package Information:
  https://launchpad.net/ubuntu/+source/linux/4.4.0-71.92
  https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1012.21
  https://launchpad.net/ubuntu/+source/linux-gke/4.4.0-1009.9
  https://launchpad.net/ubuntu/+source/linux-raspi2/4.4.0-1051.58
  https://launchpad.net/ubuntu/+source/linux-snapdragon/4.4.0-1054.58


--3uo+9/B/ebqu+fSQ

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
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=GOjO
-----END PGP SIGNATURE-----

--3uo+9/B/ebqu+fSQ--