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USN-3188-2: Linux kernel (Trusty HWE) vulnerability

3 February 2017

The system could be made to crash if it received specially crafted network traffic.

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USN-3188-1 fixed vulnerabilities in the Linux kernel for Ubuntu 14.04
LTS. This update provides the corresponding updates for the Linux
Hardware Enablement (HWE) kernel from Ubuntu 14.04 LTS for Ubuntu
12.04 LTS.

Andrey Konovalov discovered that the SCTP implementation in the Linux
kernel improperly handled validation of incoming data. A remote attacker
could use this to cause a denial of service (system crash).

Reduce your security exposure

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 12.04

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.


Related notices

  • USN-3187-1: linux-image-3.2.0-121-omap, linux-image-3.2.0-121-powerpc-smp, linux-image-3.2.0-121-powerpc64-smp, linux-image-3.2.0-121-virtual, linux-image-powerpc-smp, linux-image-omap, linux-image-3.2.0-121-generic-pae, linux, linux-image-virtual, linux-image-powerpc64-smp, linux-image-3.2.0-121-generic, linux-image-generic-pae, linux-image-3.2.0-121-highbank, linux-image-generic, linux-image-highbank
  • USN-3162-1: linux-image-4.8.0-32-powerpc64-emb, linux-image-powerpc-e500mc, linux-image-4.8.0-32-powerpc-e500mc, linux-image-4.8.0-32-generic, linux-image-lowlatency, linux-image-powerpc64-emb, linux-image-4.8.0-32-powerpc-smp, linux-image-4.8.0-32-generic-lpae, linux-image-4.8.0-32-lowlatency, linux, linux-image-powerpc-smp, linux-image-generic-lpae, linux-image-generic
  • USN-3162-2: linux-image-raspi2, linux-image-4.8.0-1021-raspi2, linux-raspi2
  • USN-3187-2: linux-ti-omap4, linux-image-omap4, linux-image-3.2.0-1499-omap4
  • USN-3161-4: linux-snapdragon, linux-image-4.4.0-1042-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-powerpc-e500mc, linux-image-4.4.0-57-lowlatency, linux, linux-image-extra-4.4.0-57-generic, linux-image-4.4.0-57-generic-lpae, linux-image-4.4.0-57-powerpc-smp, linux-image-4.4.0-57-powerpc64-smp
  • USN-3161-3: linux-image-4.4.0-1038-raspi2, linux-raspi2
  • USN-3161-2: linux-image-4.4.0-57-powerpc64-emb, linux-image-4.4.0-57-generic, linux-image-4.4.0-57-powerpc-e500mc, linux-image-4.4.0-57-lowlatency, linux-image-extra-4.4.0-57-generic, linux-lts-xenial, linux-image-4.4.0-57-generic-lpae, linux-image-4.4.0-57-powerpc-smp, linux-image-4.4.0-57-powerpc64-smp
  • USN-3188-1: linux-image-3.13.0-108-powerpc64-smp, linux-image-3.13.0-108-powerpc64-emb, linux-image-3.13.0-108-lowlatency, linux-image-extra-3.13.0-108-generic, linux, linux-image-3.13.0-108-powerpc-e500mc, linux-image-3.13.0-108-generic-lpae, linux-image-3.13.0-108-generic, linux-image-3.13.0-108-powerpc-e500, linux-image-3.13.0-108-powerpc-smp