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USN-3128-1: Linux kernel vulnerability

11 November 2016

The system could be made to crash under certain conditions.

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Releases

Packages

Details

Ondrej Kozina discovered that the keyring interface in the Linux kernel
contained a buffer overflow when displaying timeout events via the
/proc/keys interface. 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 16.04

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-3127-1: linux, linux-image-3.13.0-101-powerpc-smp, linux-image-3.13.0-101-powerpc64-emb, linux-image-3.13.0-101-generic, linux-image-3.13.0-101-powerpc-e500mc, linux-image-3.13.0-101-lowlatency, linux-image-3.13.0-101-generic-lpae, linux-image-3.13.0-101-powerpc64-smp, linux-image-3.13.0-101-powerpc-e500, linux-image-extra-3.13.0-101-generic
  • USN-3127-2: linux-image-generic-lpae-lts-trusty, linux-image-3.13.0-101-generic, linux-image-3.13.0-101-generic-lpae, linux-lts-trusty, linux-image-generic-lts-trusty
  • USN-3126-1: linux-image-powerpc, linux-image-virtual, linux-image-powerpc64-smp, linux, linux-image-3.2.0-115-omap, linux-image-3.2.0-115-generic, linux-image-highbank, linux-image-3.2.0-115-virtual, linux-image-3.2.0-115-generic-pae, linux-image-generic, linux-image-3.2.0-115-powerpc-smp, linux-image-powerpc-smp, linux-image-3.2.0-115-powerpc64-smp, linux-image-3.2.0-115-highbank, linux-image-omap, linux-image-generic-pae
  • USN-3126-2: linux-image-3.2.0-1493-omap4, linux-ti-omap4, linux-image-omap4
  • USN-3161-3: linux-image-4.4.0-1038-raspi2, linux-raspi2
  • USN-3129-1: linux-image-virtual, linux-image-powerpc64-smp, linux-image-4.8.0-27-generic, linux, linux-image-powerpc-e500mc, linux-image-4.8.0-27-lowlatency, linux-image-4.8.0-27-powerpc-smp, linux-image-4.8.0-27-powerpc64-emb, linux-image-lowlatency, linux-image-4.8.0-27-generic-lpae, linux-image-4.8.0-27-powerpc-e500mc, linux-image-generic, linux-image-generic-lpae, linux-image-powerpc-smp, linux-image-powerpc64-emb
  • USN-3129-2: linux-image-raspi2, linux-image-4.8.0-1018-raspi2, linux-raspi2
  • USN-3128-3: linux-image-4.4.0-1035-snapdragon, linux-snapdragon
  • USN-3128-2: linux-image-4.4.0-47-lowlatency, linux-image-4.4.0-47-generic-lpae, linux-image-extra-4.4.0-47-generic, linux-image-4.4.0-47-generic, linux-image-4.4.0-47-powerpc-smp, linux-image-4.4.0-47-powerpc-e500mc, linux-image-4.4.0-47-powerpc64-smp, linux-lts-xenial, linux-image-4.4.0-47-powerpc64-emb

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