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USN-3443-3: Linux kernel (GCP) vulnerability

11 October 2017

The system could be made to crash under certain conditions.

Releases

Packages

  • linux-gcp - Linux kernel for Google Cloud Platform (GCP) systems

Details

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 16.04

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

Related notices

  • USN-3443-1: linux, linux-image-powerpc-e500mc, linux-image-4.10.0-37-lowlatency, linux-image-4.10.0-37-generic-lpae, linux-image-powerpc64-emb, linux-image-generic, linux-image-virtual, linux-raspi2, linux-image-lowlatency, linux-image-raspi2, linux-image-4.10.0-37-generic, linux-image-generic-lpae, linux-image-4.10.0-1019-raspi2, linux-image-powerpc-smp, linux-image-powerpc64-smp
  • USN-3443-2: linux-image-4.10.0-37-generic-lpae, linux-image-4.10.0-37-lowlatency, linux-hwe, linux-image-4.10.0-37-generic, linux-image-extra-4.10.0-37-generic
  • USN-3444-1: linux-image-4.4.0-97-powerpc64-smp, linux-raspi2, linux-image-4.4.0-1038-aws, linux-image-4.4.0-1075-raspi2, linux-image-4.4.0-97-powerpc64-emb, linux-gke, linux-image-4.4.0-1008-kvm, linux-image-4.4.0-1077-snapdragon, linux-image-extra-4.4.0-1032-gke, linux-aws, linux, linux-snapdragon, linux-image-4.4.0-1032-gke, linux-image-4.4.0-97-powerpc-e500mc, linux-image-4.4.0-97-generic, linux-image-4.4.0-97-lowlatency, linux-kvm, linux-image-4.4.0-97-generic-lpae, linux-image-extra-4.4.0-97-generic, linux-image-4.4.0-97-powerpc-smp
  • USN-3444-2: linux-image-4.4.0-97-powerpc-e500mc, linux-image-4.4.0-97-generic, linux-image-4.4.0-97-lowlatency, linux-image-4.4.0-97-powerpc64-smp, linux-lts-xenial, linux-image-4.4.0-97-generic-lpae, linux-image-extra-4.4.0-97-generic, linux-image-4.4.0-97-powerpc64-emb, linux-image-4.4.0-97-powerpc-smp
  • USN-3445-1: linux-image-3.13.0-133-powerpc-e500mc, linux-image-3.13.0-133-powerpc-smp, linux-image-extra-3.13.0-133-generic, linux-image-3.13.0-133-generic, linux-image-3.13.0-133-powerpc-e500, linux-image-3.13.0-133-generic-lpae, linux-image-3.13.0-133-powerpc64-smp, linux-image-3.13.0-133-powerpc64-emb, linux, linux-image-3.13.0-133-lowlatency
  • USN-3445-2: linux-image-generic-lts-trusty, linux-image-3.13.0-133-generic, linux-image-generic-lpae-lts-trusty, linux-image-3.13.0-133-generic-lpae, linux-lts-trusty