[USN-3051-1] Linux kernel (Trusty HWE) vulnerabilities

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2
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=uMBj
-----END PGP SIGNATURE-----
==========================================================================
Ubuntu Security Notice USN-3051-1
August 10, 2016

linux-lts-trusty vulnerabilities
==========================================================================

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

- Ubuntu 12.04 LTS

Summary:

Several security issues were fixed in the kernel.

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

Details:

It was discovered that the keyring implementation in the Linux kernel did
not ensure a data structure was initialized before referencing it after an
error condition occurred. A local attacker could use this to cause a denial
of service (system crash). (CVE-2016-4470)

Kangjie Lu discovered an information leak in the netlink implementation of
the Linux kernel. A local attacker could use this to obtain sensitive
information from kernel memory. (CVE-2016-5243)

Update instructions:

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

Ubuntu 12.04 LTS:
linux-image-3.13.0-93-generic 3.13.0-93.140~precise1
linux-image-3.13.0-93-generic-lpae 3.13.0-93.140~precise1

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-3051-1
CVE-2016-4470, CVE-2016-5243

Package Information:
https://launchpad.net/ubuntu/+source/linux-lts-trusty/3.13.0-93.140~precise1