USN-3445-1: Linux kernel vulnerabilities

10 October 2017

linux vulnerabilities

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

  • Ubuntu 14.04 LTS


Several security issues were fixed in the Linux kernel.

Software Description

  • linux - Linux kernel


Eyal Itkin discovered that the IP over IEEE 1394 (FireWire) implementation in the Linux kernel contained a buffer overflow when handling fragmented packets. A remote attacker could use this to possibly execute arbitrary code with administrative privileges. (CVE-2016-8633)

Andrey Konovalov discovered that a divide-by-zero error existed in the TCP stack implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2017-14106)

Update instructions

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

Ubuntu 14.04 LTS
linux-image-3.13.0-133-generic - 3.13.0-133.182
linux-image-3.13.0-133-generic-lpae - 3.13.0-133.182
linux-image-3.13.0-133-lowlatency - 3.13.0-133.182
linux-image-3.13.0-133-powerpc-e500 - 3.13.0-133.182
linux-image-3.13.0-133-powerpc-e500mc - 3.13.0-133.182
linux-image-3.13.0-133-powerpc-smp - 3.13.0-133.182
linux-image-3.13.0-133-powerpc64-emb - 3.13.0-133.182
linux-image-3.13.0-133-powerpc64-smp - 3.13.0-133.182
linux-image-generic -
linux-image-generic-lpae -
linux-image-lowlatency -
linux-image-powerpc-e500 -
linux-image-powerpc-e500mc -
linux-image-powerpc-smp -
linux-image-powerpc64-emb -
linux-image-powerpc64-smp -

To update your system, please follow these instructions:

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.