USN-3386-1: Linux kernel vulnerabilities

11 August 2017

Several security issues were fixed in the Linux kernel.

Releases

Packages

Details

Andrey Konovalov discovered a race condition in the UDP Fragmentation
Offload (UFO) code in the Linux kernel. A local attacker could use this to
cause a denial of service or execute arbitrary code. (CVE-2017-1000112)

Andrey Konovalov discovered a race condition in AF_PACKET socket option
handling code in the Linux kernel. A local unprivileged attacker could use
this to cause a denial of service or possibly execute arbitrary code.
(CVE-2017-1000111)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 14.04

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.

Related notices

  • USN-3384-1: linux-image-4.10.0-32-lowlatency, linux-image-raspi2, linux-raspi2, linux-image-generic-lpae, linux-image-4.10.0-32-generic-lpae, linux-image-4.10.0-32-generic, linux-image-lowlatency, linux-image-4.10.0-1015-raspi2, linux, linux-image-generic
  • USN-3384-2: linux-image-4.10.0-32-lowlatency, linux-hwe, linux-image-4.10.0-32-generic-lpae, linux-image-4.10.0-32-generic, linux-image-extra-4.10.0-32-generic
  • USN-3386-2: linux-image-generic-lts-trusty, linux-image-generic-lpae-lts-trusty, linux-image-3.13.0-128-generic, linux-image-3.13.0-128-generic-lpae, linux-lts-trusty
  • USN-3385-2: linux-image-4.4.0-91-generic, linux-lts-xenial, linux-image-extra-4.4.0-91-generic, linux-image-4.4.0-91-powerpc64-emb, linux-image-4.4.0-91-lowlatency, linux-image-4.4.0-91-powerpc-smp, linux-image-4.4.0-91-powerpc-e500mc, linux-image-4.4.0-91-generic-lpae, linux-image-4.4.0-91-powerpc64-smp
  • USN-3385-1: linux-image-4.4.0-91-generic, linux-image-4.4.0-1026-gke, linux-image-4.4.0-1069-raspi2, linux-raspi2, linux-image-extra-4.4.0-91-generic, linux-image-4.4.0-91-powerpc64-emb, linux-image-4.4.0-91-lowlatency, linux-image-4.4.0-1030-aws, linux-image-4.4.0-91-powerpc-smp, linux-image-extra-4.4.0-1026-gke, linux, linux-snapdragon, linux-image-4.4.0-91-powerpc-e500mc, linux-image-4.4.0-1071-snapdragon, linux-image-4.4.0-91-generic-lpae, linux-gke, linux-image-4.4.0-91-powerpc64-smp, linux-aws