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USN-3266-1: Linux kernel vulnerability

25 April 2017

The system could be made to crash under certain conditions.

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Releases

Packages

Details

Alexander Popov discovered that a race condition existed in the Stream
Control Transmission Protocol (SCTP) implementation in the Linux kernel. A
local attacker could use this to cause a denial of service (system crash).

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Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

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Update instructions

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

Ubuntu 16.10

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-3264-1: linux, linux-image-3.13.0-117-powerpc-smp, linux-image-extra-3.13.0-117-generic, linux-image-3.13.0-117-powerpc64-emb, linux-image-3.13.0-117-powerpc-e500mc, linux-image-3.13.0-117-generic-lpae, linux-image-3.13.0-117-powerpc64-smp, linux-image-3.13.0-117-generic, linux-image-3.13.0-117-powerpc-e500, linux-image-3.13.0-117-lowlatency
  • USN-3264-2: linux-lts-trusty, linux-image-generic-lpae-lts-trusty, linux-image-3.13.0-117-generic-lpae, linux-image-generic-lts-trusty, linux-image-3.13.0-117-generic
  • USN-3266-2: linux-image-4.8.0-49-generic-lpae, linux-hwe, linux-image-extra-4.8.0-49-generic, linux-image-4.8.0-49-lowlatency, linux-image-4.8.0-49-generic
  • USN-3265-1: linux, linux-image-extra-4.4.0-75-generic, linux-image-4.4.0-75-lowlatency, linux-image-4.4.0-75-powerpc-smp, linux-image-4.4.0-75-generic-lpae, linux-image-4.4.0-75-generic, linux-raspi2, linux-image-4.4.0-1054-raspi2, linux-gke, linux-image-4.4.0-75-powerpc64-smp, linux-image-extra-4.4.0-1012-gke, linux-image-4.4.0-1012-gke, linux-snapdragon, linux-image-4.4.0-75-powerpc-e500mc, linux-aws, linux-image-4.4.0-75-powerpc64-emb, linux-image-4.4.0-1057-snapdragon, linux-image-4.4.0-1016-aws
  • USN-3265-2: linux-image-extra-4.4.0-75-generic, linux-lts-xenial, linux-image-4.4.0-75-powerpc-smp, linux-image-4.4.0-75-generic-lpae, linux-image-4.4.0-75-generic, linux-image-4.4.0-75-powerpc64-smp, linux-image-4.4.0-75-powerpc-e500mc, linux-image-4.4.0-75-powerpc64-emb, linux-image-4.4.0-75-lowlatency

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Further reading