USN-2928-2: Linux kernel (OMAP4) vulnerability

14 March 2016

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

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.

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-2928-1: linux-image-3.2.0-101-generic-pae, linux-image-3.2.0-101-highbank, linux-image-3.2.0-101-generic, linux-image-3.2.0-101-virtual, linux-image-3.2.0-101-powerpc-smp, linux-image-3.2.0-101-powerpc64-smp, linux, linux-image-3.2.0-101-omap
  • USN-2929-1: linux-image-3.13.0-83-powerpc-smp, linux-image-3.13.0-83-powerpc-e500mc, linux-image-3.13.0-83-powerpc64-smp, linux-image-3.13.0-83-lowlatency, linux-image-3.13.0-83-generic, linux-image-3.13.0-83-generic-lpae, linux-image-3.13.0-83-powerpc64-emb, linux, linux-image-3.13.0-83-powerpc-e500
  • USN-2929-2: linux-image-3.13.0-83-generic-lpae, linux-lts-trusty, linux-image-3.13.0-83-generic
  • USN-2930-1: linux-image-4.2.0-34-generic, linux-image-4.2.0-34-powerpc-e500mc, linux-image-4.2.0-34-powerpc64-emb, linux-image-4.2.0-34-powerpc64-smp, linux-image-4.2.0-34-lowlatency, linux, linux-image-4.2.0-34-powerpc-smp, linux-image-4.2.0-34-generic-lpae
  • USN-2930-2: linux-image-4.2.0-34-generic, linux-lts-wily, linux-image-4.2.0-34-powerpc-e500mc, linux-image-4.2.0-34-powerpc64-emb, linux-image-4.2.0-34-powerpc64-smp, linux-image-4.2.0-34-lowlatency, linux-image-4.2.0-34-powerpc-smp, linux-image-4.2.0-34-generic-lpae
  • USN-2930-3: linux-image-4.2.0-1027-raspi2, linux-raspi2
  • USN-2931-1: linux-image-3.16.0-67-powerpc-smp, linux-image-3.16.0-67-lowlatency, linux-image-3.16.0-67-powerpc64-emb, linux-image-3.16.0-67-generic-lpae, linux-image-3.16.0-67-powerpc64-smp, linux-image-3.16.0-67-generic, linux-lts-utopic, linux-image-3.16.0-67-powerpc-e500mc
  • USN-2932-1: linux-image-3.19.0-56-generic-lpae, linux-image-3.19.0-56-powerpc-smp, linux-lts-vivid, linux-image-3.19.0-56-powerpc-e500mc, linux-image-3.19.0-56-powerpc64-emb, linux-image-3.19.0-56-generic, linux-image-3.19.0-56-powerpc64-smp, linux-image-3.19.0-56-lowlatency