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Ubuntu Security Notice USN-2660-1
July 07, 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 expose sensitive information to local
applications.

Software Description:
– linux: Linux kernel

Details:

A race condition was discovered in the Linux kernel’s file_handle size
verification. A local user could exploit this flaw to read potentially
sensative memory locations.

Update instructions:

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

Ubuntu 12.04 LTS:
linux-image-3.2.0-87-generic 3.2.0-87.125
linux-image-3.2.0-87-generic-pae 3.2.0-87.125
linux-image-3.2.0-87-highbank 3.2.0-87.125
linux-image-3.2.0-87-omap 3.2.0-87.125
linux-image-3.2.0-87-powerpc-smp 3.2.0-87.125
linux-image-3.2.0-87-powerpc64-smp 3.2.0-87.125
linux-image-3.2.0-87-virtual 3.2.0-87.125

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-2660-1
CVE-2015-1420

Package Information:
https://launchpad.net/ubuntu/+source/linux/3.2.0-87.125

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