1. Ubuntu Security Notices
  2. USN-3404-2

USN-3404-2: Linux kernel (HWE) vulnerability

Publication date

28 August 2017

Overview

The system could be made to crash under certain conditions.

Releases

Packages

  • linux-hwe - Linux hardware enablement (HWE) kernel

Details

USN-3404-1 fixed a vulnerability in the Linux kernel for Ubuntu 17.04.
This update provides the corresponding updates for the Linux Hardware
Enablement (HWE) kernel from Ubuntu 17.04 for Ubuntu 16.04 LTS.

A reference count bug was discovered in the Linux kernel ipx protocol
stack. A local attacker could exploit this flaw to cause a denial of
service or possibly other unspecified problems.

USN-3404-1 fixed a vulnerability in the Linux kernel for Ubuntu 17.04.
This update provides the corresponding updates for the Linux Hardware
Enablement (HWE) kernel from Ubuntu 17.04 for Ubuntu 16.04 LTS.

A reference count bug was discovered in the Linux kernel ipx protocol
stack. A local attacker could exploit this flaw to cause a denial of
service or possibly other unspecified problems.

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
16.04 xenial linux-image-4.10.0-33-generic –  4.10.0-33.37~16.04.1
linux-image-4.10.0-33-generic-lpae –  4.10.0-33.37~16.04.1
linux-image-4.10.0-33-lowlatency –  4.10.0-33.37~16.04.1

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References

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