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USN-2928-1: Linux kernel vulnerability

14 March 2016

The system could be made to crash or run programs as an administrator by someone with physical access.

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Releases

Packages

Details

Andrey Konovalov discovered that the ALSA USB MIDI driver incorrectly
performed a double-free. A local attacker with physical access could use
this to cause a denial of service (system crash) or possibly execute
arbitrary code with administrative privileges.

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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 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.

References

Related notices

  • USN-2931-1: linux-image-3.16.0-67-generic, linux-image-3.16.0-67-powerpc64-smp, linux-image-3.16.0-67-powerpc64-emb, linux-image-extra-3.16.0-67-generic, linux-image-3.16.0-67-generic-lpae, linux-image-3.16.0-67-powerpc-e500mc, linux-image-3.16.0-67-lowlatency, linux-lts-utopic, linux-image-3.16.0-67-powerpc-smp
  • USN-2930-2: linux-image-extra-4.2.0-34-generic, linux-image-4.2.0-34-lowlatency, linux-image-4.2.0-34-powerpc-e500mc, linux-image-4.2.0-34-generic, linux-image-4.2.0-34-powerpc64-emb, linux-image-4.2.0-34-generic-lpae, linux-image-4.2.0-34-powerpc-smp, linux-image-4.2.0-34-powerpc64-smp, linux-lts-wily
  • USN-2929-1: linux, linux-image-3.13.0-83-powerpc-smp, linux-image-3.13.0-83-powerpc64-smp, linux-image-extra-3.13.0-83-generic, linux-image-3.13.0-83-powerpc-e500, linux-image-3.13.0-83-generic, linux-image-3.13.0-83-powerpc64-emb, linux-image-3.13.0-83-generic-lpae, linux-image-3.13.0-83-lowlatency, linux-image-3.13.0-83-powerpc-e500mc
  • USN-2929-2: linux-image-3.13.0-83-generic-lpae, linux-image-3.13.0-83-generic, linux-lts-trusty
  • USN-2932-1: linux-image-3.19.0-56-generic-lpae, linux-image-3.19.0-56-powerpc64-smp, linux-image-3.19.0-56-powerpc64-emb, linux-image-extra-3.19.0-56-generic, linux-image-3.19.0-56-powerpc-smp, linux-image-3.19.0-56-generic, linux-image-3.19.0-56-lowlatency, linux-image-3.19.0-56-powerpc-e500mc, linux-lts-vivid
  • USN-2928-2: linux-image-3.2.0-1479-omap4, linux-ti-omap4
  • USN-2930-3: linux-raspi2, linux-image-4.2.0-1027-raspi2
  • USN-2930-1: linux, linux-image-4.2.0-34-lowlatency, linux-image-4.2.0-34-powerpc-e500mc, linux-image-4.2.0-34-generic, linux-image-4.2.0-34-powerpc64-emb, linux-image-4.2.0-34-generic-lpae, linux-image-4.2.0-34-powerpc-smp, linux-image-4.2.0-34-powerpc64-smp

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