[USN-3404-1] Linux kernel vulnerability

Steve Beattie steve.beattie at canonical.com
Mon Aug 28 22:57:29 UTC 2017


==========================================================================
Ubuntu Security Notice USN-3404-1
August 28, 2017

linux, linux-raspi2 vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 17.04

Summary:

The system could be made to crash under certain conditions.

Software Description:
- linux: Linux kernel
- linux-raspi2: Linux kernel for Raspberry Pi 2

Details:

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:

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

Ubuntu 17.04:
  linux-image-4.10.0-1016-raspi2  4.10.0-1016.19
  linux-image-4.10.0-33-generic   4.10.0-33.37
  linux-image-4.10.0-33-generic-lpae  4.10.0-33.37
  linux-image-4.10.0-33-lowlatency  4.10.0-33.37
  linux-image-generic             4.10.0.33.33
  linux-image-generic-lpae        4.10.0.33.33
  linux-image-lowlatency          4.10.0.33.33
  linux-image-raspi2              4.10.0.1016.17

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:
  https://www.ubuntu.com/usn/usn-3404-1
  CVE-2017-7487

Package Information:
  https://launchpad.net/ubuntu/+source/linux/4.10.0-33.37
  https://launchpad.net/ubuntu/+source/linux-raspi2/4.10.0-1016.19

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