USN-2979-4: Linux kernel (Qualcomm Snapdragon) vulnerability

16 May 2016

The system could be made to crash or run programs as an administrator.

Releases

Packages

  • linux-snapdragon - Linux kernel for Snapdragon Processors

Details

Philip Pettersson discovered that the Linux kernel's ASN.1 DER decoder did
not properly process certificate files with tags of indefinite length. A
local unprivileged attacker 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 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-2978-1: linux-image-4.2.0-36-powerpc64-emb, linux-image-4.2.0-36-lowlatency, linux-image-4.2.0-36-powerpc-e500mc, linux, linux-image-4.2.0-36-powerpc-smp, linux-image-4.2.0-36-generic-lpae, linux-image-4.2.0-36-generic, linux-image-4.2.0-36-powerpc64-smp
  • USN-2975-2: linux-lts-trusty, linux-image-3.13.0-86-generic-lpae, linux-image-3.13.0-86-generic
  • USN-2979-2: linux-image-4.4.0-22-powerpc-e500mc, linux-image-4.4.0-22-generic, linux-image-4.4.0-22-powerpc-smp, linux-image-4.4.0-22-lowlatency, linux-image-4.4.0-22-powerpc64-emb, linux-image-4.4.0-22-powerpc64-smp, linux-lts-xenial, linux-image-4.4.0-22-generic-lpae
  • USN-2975-1: linux-image-3.13.0-86-lowlatency, linux-image-3.13.0-86-powerpc-e500mc, linux-image-3.13.0-86-powerpc64-emb, linux-image-3.13.0-86-powerpc-e500, linux, linux-image-3.13.0-86-generic-lpae, linux-image-3.13.0-86-generic, linux-image-3.13.0-86-powerpc-smp, linux-image-3.13.0-86-powerpc64-smp
  • USN-2977-1: linux-lts-vivid, linux-image-3.19.0-59-powerpc-smp, linux-image-3.19.0-59-powerpc64-smp, linux-image-3.19.0-59-powerpc64-emb, linux-image-3.19.0-59-generic-lpae, linux-image-3.19.0-59-powerpc-e500mc, linux-image-3.19.0-59-generic, linux-image-3.19.0-59-lowlatency
  • USN-2979-3: linux-raspi2, linux-image-4.4.0-1010-raspi2
  • USN-2979-1: linux-image-4.4.0-22-powerpc-e500mc, linux, linux-image-4.4.0-22-generic, linux-image-4.4.0-22-powerpc-smp, linux-image-4.4.0-22-lowlatency, linux-image-4.4.0-22-powerpc64-emb, linux-image-4.4.0-22-powerpc64-smp, linux-image-4.4.0-22-generic-lpae
  • USN-2978-3: linux-image-4.2.0-1029-raspi2, linux-raspi2
  • USN-2976-1: linux-image-3.16.0-71-powerpc64-smp, linux-lts-utopic, linux-image-3.16.0-71-powerpc64-emb, linux-image-3.16.0-71-generic-lpae, linux-image-3.16.0-71-lowlatency, linux-image-3.16.0-71-powerpc-smp, linux-image-3.16.0-71-powerpc-e500mc, linux-image-3.16.0-71-generic
  • USN-2978-2: linux-image-4.2.0-36-powerpc64-emb, linux-image-4.2.0-36-lowlatency, linux-image-4.2.0-36-powerpc-e500mc, linux-image-4.2.0-36-powerpc-smp, linux-lts-wily, linux-image-4.2.0-36-generic-lpae, linux-image-4.2.0-36-generic, linux-image-4.2.0-36-powerpc64-smp