==========================================================================
Ubuntu Security Notice USN-2807-1
November 10, 2015
linux-lts-wily vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 14.04 LTS
Summary:
The system could be made to crash under certain conditions.
Software Description:
– linux-lts-wily: Linux hardware enablement kernel from Wily
Details:
Ben Serebrin discovered that the KVM hypervisor implementation in the Linux
kernel did not properly catch Alignment Check exceptions. An attacker in a
guest virtual machine could use this to cause a denial of service (system
crash) in the host OS.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 14.04 LTS:
linux-image-4.2.0-18-generic 4.2.0-18.22~14.04.1
linux-image-4.2.0-18-generic-lpae 4.2.0-18.22~14.04.1
linux-image-4.2.0-18-lowlatency 4.2.0-18.22~14.04.1
linux-image-4.2.0-18-powerpc-e500mc 4.2.0-18.22~14.04.1
linux-image-4.2.0-18-powerpc-smp 4.2.0-18.22~14.04.1
linux-image-4.2.0-18-powerpc64-emb 4.2.0-18.22~14.04.1
linux-image-4.2.0-18-powerpc64-smp 4.2.0-18.22~14.04.1
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-2807-1
CVE-2015-5307
Package Information:
https://launchpad.net/ubuntu/+source/linux-lts-wily/4.2.0-18.22~14.04.1
—–BEGIN PGP SIGNATURE—–
Version: GnuPG v1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=ZZCz
—–END PGP SIGNATURE—–
—
