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USN-3290-1: Linux kernel vulnerability

17 May 2017

The system could be made to crash under certain conditions.

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Releases

Packages

Details

Marco Grassi discovered that the TCP implementation in the Linux kernel
mishandles socket buffer (skb) truncation. 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 14.04

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-3162-1: linux-image-4.8.0-32-powerpc-smp, linux-image-powerpc-smp, linux-image-4.8.0-32-powerpc64-emb, linux-image-4.8.0-32-lowlatency, linux-image-4.8.0-32-powerpc-e500mc, linux-image-generic, linux-image-lowlatency, linux-image-4.8.0-32-generic, linux-image-powerpc-e500mc, linux-image-powerpc64-emb, linux-image-generic-lpae, linux-image-4.8.0-32-generic-lpae, linux
  • USN-3162-2: linux-raspi2, linux-image-4.8.0-1021-raspi2, linux-image-raspi2
  • USN-3161-4: linux-image-4.4.0-1042-snapdragon, linux-snapdragon
  • USN-3161-1: linux-image-4.4.0-57-powerpc64-emb, linux-image-4.4.0-57-generic, linux-image-4.4.0-57-generic-lpae, linux-image-4.4.0-57-lowlatency, linux-image-4.4.0-57-powerpc-smp, linux-image-4.4.0-57-powerpc64-smp, linux-image-extra-4.4.0-57-generic, linux, linux-image-4.4.0-57-powerpc-e500mc
  • USN-3161-3: linux-raspi2, linux-image-4.4.0-1038-raspi2
  • USN-3161-2: linux-image-4.4.0-57-powerpc64-emb, linux-lts-xenial, linux-image-4.4.0-57-generic, linux-image-4.4.0-57-generic-lpae, linux-image-4.4.0-57-lowlatency, linux-image-4.4.0-57-powerpc-smp, linux-image-4.4.0-57-powerpc64-smp, linux-image-extra-4.4.0-57-generic, linux-image-4.4.0-57-powerpc-e500mc

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Further reading