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==========================================================================
Ubuntu Security Notice USN-3189-1
February 03, 2017

linux, linux-raspi2, linux-snapdragon vulnerabilities
==========================================================================

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

- Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in the kernel.

Software Description:
- linux: Linux kernel
- linux-raspi2: Linux kernel for Raspberry Pi 2
- linux-snapdragon: Linux kernel for Snapdragon Processors

Details:

Mikulas Patocka discovered that the asynchronous multibuffer cryptographic
daemon (mcryptd) in the Linux kernel did not properly handle being invoked
with incompatible algorithms. A local attacker could use this to cause a
denial of service (system crash). (CVE-2016-10147)

Qidan He discovered that the ICMP implementation in the Linux kernel did
not properly check the size of an ICMP header. A local attacker with
CAP_NET_ADMIN could use this to expose sensitive information.
(CVE-2016-8399)

Update instructions:

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

Ubuntu 16.04 LTS:
  linux-image-4.4.0-1042-raspi2   4.4.0-1042.49
  linux-image-4.4.0-1046-snapdragon  4.4.0-1046.50
  linux-image-4.4.0-62-generic    4.4.0-62.83
  linux-image-4.4.0-62-generic-lpae  4.4.0-62.83
  linux-image-4.4.0-62-lowlatency  4.4.0-62.83
  linux-image-4.4.0-62-powerpc-e500mc  4.4.0-62.83
  linux-image-4.4.0-62-powerpc-smp  4.4.0-62.83
  linux-image-4.4.0-62-powerpc64-emb  4.4.0-62.83
  linux-image-4.4.0-62-powerpc64-smp  4.4.0-62.83
  linux-image-generic             4.4.0.62.65
  linux-image-generic-lpae        4.4.0.62.65
  linux-image-lowlatency          4.4.0.62.65
  linux-image-powerpc-e500mc      4.4.0.62.65
  linux-image-powerpc-smp         4.4.0.62.65
  linux-image-powerpc64-emb       4.4.0.62.65
  linux-image-powerpc64-smp       4.4.0.62.65
  linux-image-raspi2              4.4.0.1042.41
  linux-image-snapdragon          4.4.0.1046.38

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-3189-1
  CVE-2016-10147, CVE-2016-8399

Package Information:
  https://launchpad.net/ubuntu/+source/linux/4.4.0-62.83
  https://launchpad.net/ubuntu/+source/linux-raspi2/4.4.0-1042.49
  https://launchpad.net/ubuntu/+source/linux-snapdragon/4.4.0-1046.50


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