1. Ubuntu Security Notices
  2. USN-3152-1

USN-3152-1: Linux kernel vulnerability

Publication date

5 December 2016

Overview

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

Releases

Packages

Details

Philip Pettersson discovered a race condition in the af_packet
implementation in the Linux kernel. A local unprivileged attacker could use
this to cause a denial of service (system crash) or run arbitrary code with
administrative privileges.

Philip Pettersson discovered a race condition in the af_packet
implementation in the Linux kernel. A local unprivileged attacker could use
this to cause a denial of service (system crash) or run arbitrary code with
administrative privileges.

Update instructions

After a standard system update you need to reboot your computer to make all the necessary changes.

Learn more about how to get the fixes.

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.

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

Ubuntu Release Package Version
16.10 yakkety linux-image-powerpc-smp –  4.8.0.30.39
linux-image-4.8.0-30-generic-lpae –  4.8.0-30.32
linux-image-4.8.0-30-powerpc-smp –  4.8.0-30.32
linux-image-4.8.0-30-powerpc-e500mc –  4.8.0-30.32
linux-image-4.8.0-30-lowlatency –  4.8.0-30.32
linux-image-generic –  4.8.0.30.39
linux-image-4.8.0-30-generic –  4.8.0-30.32
linux-image-powerpc-e500mc –  4.8.0.30.39
linux-image-lowlatency –  4.8.0.30.39
linux-image-generic-lpae –  4.8.0.30.39
linux-image-powerpc64-emb –  4.8.0.30.39
linux-image-4.8.0-30-powerpc64-emb –  4.8.0-30.32

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References

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