Ubuntu Security Notice USN-3249-1
29th March, 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 version:
- Ubuntu 16.04 LTS:
- linux-image-gke 4.4.0.1009.11
- linux-image-powerpc-e500mc 4.4.0.71.77
-
linux-image-4.4.0-1054-snapdragon
4.4.0-1054.58
- linux-image-raspi2 4.4.0.1051.52
- linux-image-powerpc-smp 4.4.0.71.77
-
linux-image-4.4.0-71-lowlatency
4.4.0-71.92
- linux-image-generic 4.4.0.71.77
-
linux-image-4.4.0-71-powerpc-smp
4.4.0-71.92
-
linux-image-4.4.0-71-powerpc-e500mc
4.4.0-71.92
-
linux-image-4.4.0-71-generic
4.4.0-71.92
-
linux-image-4.4.0-71-powerpc64-smp
4.4.0-71.92
-
linux-image-4.4.0-1051-raspi2
4.4.0-1051.58
- linux-image-generic-lpae 4.4.0.71.77
- linux-image-snapdragon 4.4.0.1054.47
- linux-image-aws 4.4.0.1012.15
-
linux-image-4.4.0-1012-aws
4.4.0-1012.21
-
linux-image-4.4.0-71-generic-lpae
4.4.0-71.92
- linux-image-lowlatency 4.4.0.71.77
-
linux-image-4.4.0-1009-gke
4.4.0-1009.9
- linux-image-powerpc64-smp 4.4.0.71.77
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
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.