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Ubuntu Security Notice USN-3250-2

Ubuntu Security Notice USN-3250-2
Posted Mar 30, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3250-2 - USN-3250-1 fixed a vulnerability in the Linux kernel for Ubuntu 14.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 14.04 LTS for Ubuntu 12.04 LTS. It was discovered that the xfrm framework for transforming packets in the Linux kernel did not properly validate data received from user space. A local attacker could use this to cause a denial of service or execute arbitrary code with administrative privileges. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2017-7184
MD5 | 5657c785b324e9563c6a8fb394214b5a

Ubuntu Security Notice USN-3250-2

Change Mirror Download

==========================================================================
Ubuntu Security Notice USN-3250-2
March 29, 2017

linux-lts-trusty vulnerability
==========================================================================

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

- Ubuntu 12.04 LTS

Summary:

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

Software Description:
- linux-lts-trusty: Linux hardware enablement kernel from Trusty for Precise

Details:

USN-3250-1 fixed a vulnerability in the Linux kernel for Ubuntu 14.04
LTS. This update provides the corresponding updates for the Linux
Hardware Enablement (HWE) kernel from Ubuntu 14.04 LTS for Ubuntu
12.04 LTS.

It was discovered that the xfrm framework for transforming packets in the
Linux kernel did not properly validate data received from user space. A
local attacker could use this to cause a denial of service (system crash)
or execute arbitrary code with administrative privileges.

Update instructions:

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

Ubuntu 12.04 LTS:
linux-image-3.13.0-115-generic 3.13.0-115.162~precise1
linux-image-3.13.0-115-generic-lpae 3.13.0-115.162~precise1
linux-image-generic-lpae-lts-trusty 3.13.0.115.106
linux-image-generic-lts-trusty 3.13.0.115.106

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:
http://www.ubuntu.com/usn/usn-3250-2
http://www.ubuntu.com/usn/usn-3250-1
CVE-2017-7184

Package Information:
https://launchpad.net/ubuntu/+source/linux-lts-trusty/3.13.0-115.162~precise1


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