USN-3128-3: Linux kernel (Qualcomm Snapdragon) vulnerability

11 November 2016

The system could be made to crash under certain conditions.

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).

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