USN-3423-1: Linux kernel vulnerability

18 September 2017

The system could be made to crash if it received specially crafted bluetooth traffic.

Releases

Packages

  • linux - Linux kernel

Details

It was discovered that a buffer overflow existed in the Bluetooth stack of
the Linux kernel when handling L2CAP configuration responses. A physically
proximate 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 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-3419-1: linux-image-generic, linux-image-lowlatency, linux-image-generic-lpae, linux-image-4.10.0-35-lowlatency, linux-image-raspi2, linux-image-4.10.0-1018-raspi2, linux-image-4.10.0-35-generic, linux, linux-image-4.10.0-35-generic-lpae, linux-raspi2
  • USN-3419-2: linux-image-generic-lpae-hwe-16.04, linux-image-4.10.0-35-lowlatency, linux-image-generic-hwe-16.04, linux-image-4.10.0-35-generic, linux-image-lowlatency-hwe-16.04, linux-hwe, linux-image-4.10.0-35-generic-lpae
  • USN-3420-1: linux-image-generic, linux-image-4.4.0-1076-snapdragon, linux-image-powerpc-smp, linux-snapdragon, linux-image-4.4.0-96-powerpc64-emb, linux-image-4.4.0-96-generic, linux, linux-image-4.4.0-96-lowlatency, linux-raspi2, linux-image-4.4.0-1035-aws, linux-image-generic-lpae, linux-aws, linux-image-4.4.0-96-powerpc64-smp, linux-image-4.4.0-96-powerpc-e500mc, linux-gke, linux-image-4.4.0-1031-gke, linux-image-powerpc-e500mc, linux-image-4.4.0-1074-raspi2, linux-image-4.4.0-1007-kvm, linux-image-powerpc64-smp, linux-image-4.4.0-96-powerpc-smp, linux-image-aws, linux-image-gke, linux-image-lowlatency, linux-image-powerpc64-emb, linux-image-kvm, linux-image-raspi2, linux-image-snapdragon, linux-kvm, linux-image-4.4.0-96-generic-lpae
  • USN-3420-2: linux-image-powerpc-e500mc-lts-xenial, linux-image-4.4.0-96-powerpc64-smp, linux-image-4.4.0-96-powerpc-e500mc, linux-image-lowlatency-lts-xenial, linux-image-generic-lpae-lts-xenial, linux-lts-xenial, linux-image-4.4.0-96-powerpc-smp, linux-image-4.4.0-96-powerpc64-emb, linux-image-powerpc64-emb-lts-xenial, linux-image-powerpc64-smp-lts-xenial, linux-image-generic-lts-xenial, linux-image-4.4.0-96-generic, linux-image-4.4.0-96-generic-lpae, linux-image-powerpc-smp-lts-xenial, linux-image-4.4.0-96-lowlatency
  • USN-3422-1: linux-image-generic, linux-image-lowlatency, linux-image-generic-lpae, linux-image-3.13.0-132-generic-lpae, linux-image-3.13.0-132-generic, linux-image-3.13.0-132-powerpc-e500mc, linux-image-powerpc64-emb, linux-image-powerpc-smp, linux-image-powerpc64-smp, linux-image-3.13.0-132-powerpc-e500, linux-image-3.13.0-132-powerpc64-emb, linux-image-3.13.0-132-lowlatency, linux-image-powerpc-e500, linux-image-3.13.0-132-powerpc-smp, linux-image-3.13.0-132-powerpc64-smp, linux, linux-image-powerpc-e500mc
  • USN-3422-2: linux-lts-trusty, linux-image-3.13.0-132-generic-lpae, linux-image-3.13.0-132-generic, linux-image-generic-lpae-lts-trusty, linux-image-generic-lts-trusty