========================================================================== 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
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