[USN-3187-1] Linux kernel vulnerabilities

[Steve Beattie]

==========================================================================
Ubuntu Security Notice USN-3187-1
February 03, 2017

linux vulnerabilities
==========================================================================

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

- Ubuntu 12.04 LTS

Summary:

Several security issues were fixed in the kernel.

Software Description:
- linux: Linux kernel

Details:

Andrey Konovalov discovered that the SCTP implementation in the Linux
kernel improperly handled validation of incoming data. A remote attacker
could use this to cause a denial of service (system crash). (CVE-2016-9555)

It was discovered that multiple memory leaks existed in the XFS
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service (memory consumption). (CVE-2016-9685)

Update instructions:

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

Ubuntu 12.04 LTS:
  linux-image-3.2.0-121-generic   3.2.0-121.164
  linux-image-3.2.0-121-generic-pae  3.2.0-121.164
  linux-image-3.2.0-121-highbank  3.2.0-121.164
  linux-image-3.2.0-121-omap      3.2.0-121.164
  linux-image-3.2.0-121-powerpc-smp  3.2.0-121.164
  linux-image-3.2.0-121-powerpc64-smp  3.2.0-121.164
  linux-image-3.2.0-121-virtual   3.2.0-121.164
  linux-image-generic             3.2.0.121.136
  linux-image-generic-pae         3.2.0.121.136
  linux-image-highbank            3.2.0.121.136
  linux-image-omap                3.2.0.121.136
  linux-image-powerpc-smp         3.2.0.121.136
  linux-image-powerpc64-smp       3.2.0.121.136
  linux-image-virtual             3.2.0.121.136

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-3187-1
  CVE-2016-9555, CVE-2016-9685

Package Information:
  https://launchpad.net/ubuntu/+source/linux/3.2.0-121.164

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