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Ubuntu Security Notice USN-3404-2

Ubuntu Security Notice USN-3404-2
Posted Aug 28, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3404-2 - 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 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.

tags | advisory, denial of service, kernel, local, protocol
systems | linux, ubuntu
advisories | CVE-2017-7487
MD5 | a970f8e5eb195519cf353a052dfb1002

Ubuntu Security Notice USN-3404-2

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-3404-2
August 28, 2017

linux-hwe vulnerability
==========================================================================

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

- Ubuntu 16.04 LTS

Summary:

The system could be made to crash under certain conditions.

Software Description:
- 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.

Update instructions:

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

Ubuntu 16.04 LTS:
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
linux-image-generic-hwe-16.04 4.10.0.33.35
linux-image-generic-lpae-hwe-16.04 4.10.0.33.35
linux-image-lowlatency-hwe-16.04 4.10.0.33.35

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-3404-2
https://www.ubuntu.com/usn/usn-3404-1
CVE-2017-7487

Package Information:
https://launchpad.net/ubuntu/+source/linux-hwe/4.10.0-33.37~16.04.1

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