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Ubuntu Security Notice USN-2611-1
May 20, 2015

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

– Ubuntu 12.04 LTS

Summary:

The system could be made to crash if it received specially crafted
network traffic.

Software Description:
– linux: Linux kernel

Details:

Vincent Tondellier discovered an integer overflow in the Linux kernel’s
netfilter connection tracking accounting of loaded extensions. An attacker
on the local area network (LAN) could potential exploit this flaw to cause
a denial of service (system crash of targeted system).

Update instructions:

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

Ubuntu 12.04 LTS:
linux-image-3.2.0-84-generic 3.2.0-84.121
linux-image-3.2.0-84-generic-pae 3.2.0-84.121
linux-image-3.2.0-84-highbank 3.2.0-84.121
linux-image-3.2.0-84-omap 3.2.0-84.121
linux-image-3.2.0-84-powerpc-smp 3.2.0-84.121
linux-image-3.2.0-84-powerpc64-smp 3.2.0-84.121
linux-image-3.2.0-84-virtual 3.2.0-84.121

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. If
you use linux-restricted-modules, you have to update that package as
well to get modules which work with the new kernel version. Unless you
manually uninstalled the standard kernel metapackages (e.g. linux-generic,
linux-server, linux-powerpc), a standard system upgrade will automatically
perform this as well.

References:
http://www.ubuntu.com/usn/usn-2611-1
CVE-2014-9715

Package Information:
https://launchpad.net/ubuntu/+source/linux/3.2.0-84.121

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