USN-3292-1: Linux kernel vulnerability

17 May 2017

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

Releases

Packages

  • linux - Linux kernel
  • linux-raspi2 - Linux kernel for Raspberry Pi 2

Details

Jason Donenfeld discovered a heap overflow in the MACsec module in the
Linux kernel. An attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code.

Update instructions

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

Ubuntu 16.10

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-3292-2: linux-image-generic-hwe-16.04, linux-image-4.8.0-52-generic-lpae, linux-image-4.8.0-52-lowlatency, linux-image-generic-lpae-hwe-16.04, linux-hwe, linux-image-4.8.0-52-generic, linux-image-lowlatency-hwe-16.04
  • USN-3293-1: linux-image-4.10.0-21-generic, linux-image-generic, linux-image-generic-lpae, linux-image-lowlatency, linux-raspi2, linux-image-raspi2, linux-image-4.10.0-21-generic-lpae, linux-image-4.10.0-1005-raspi2, linux-image-4.10.0-21-lowlatency, linux