[USN-3250-1] Linux kernel vulnerability

[Steve Beattie]

==========================================================================
Ubuntu Security Notice USN-3250-1
March 29, 2017

linux 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: Linux kernel

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 14.04 LTS:
  linux-image-3.13.0-115-generic  3.13.0-115.162
  linux-image-3.13.0-115-generic-lpae  3.13.0-115.162
  linux-image-3.13.0-115-lowlatency  3.13.0-115.162
  linux-image-3.13.0-115-powerpc-e500  3.13.0-115.162
  linux-image-3.13.0-115-powerpc-e500mc  3.13.0-115.162
  linux-image-3.13.0-115-powerpc-smp  3.13.0-115.162
  linux-image-3.13.0-115-powerpc64-smp  3.13.0-115.162
  linux-image-generic             3.13.0.115.125
  linux-image-generic-lpae        3.13.0.115.125
  linux-image-lowlatency          3.13.0.115.125
  linux-image-powerpc-e500        3.13.0.115.125
  linux-image-powerpc-e500mc      3.13.0.115.125
  linux-image-powerpc-smp         3.13.0.115.125
  linux-image-powerpc64-smp       3.13.0.115.125

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-3250-1
  CVE-2017-7184

Package Information:
  https://launchpad.net/ubuntu/+source/linux/3.13.0-115.162

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