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==========================================================================
Ubuntu Security Notice USN-2462-1
January 13, 2015

linux vulnerabilities
==========================================================================

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

- Ubuntu 10.04 LTS

Summary:

Several security issues were fixed in the kernel.

Software Description:
- linux: Linux kernel

Details:

Lars Bull reported a race condition in the PIT (programmable interrupt
timer) emulation in the KVM (Kernel Virtual Machine) subsystem of the Linux
kernel. A local guest user with access to PIT i/o ports could exploit this
flaw to cause a denial of service (crash) on the host. (CVE-2014-3611)

Lars Bull and Nadav Amit reported a flaw in how KVM (the Kernel Virtual
Machine) handles noncanonical writes to certain MSR registers. A privileged
guest user can exploit this flaw to cause a denial of service (kernel
panic) on the host. (CVE-2014-3610)

Update instructions:

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

Ubuntu 10.04 LTS:
  linux-image-2.6.32-71-386       2.6.32-71.138
  linux-image-2.6.32-71-generic   2.6.32-71.138
  linux-image-2.6.32-71-generic-pae  2.6.32-71.138
  linux-image-2.6.32-71-ia64      2.6.32-71.138
  linux-image-2.6.32-71-lpia      2.6.32-71.138
  linux-image-2.6.32-71-powerpc   2.6.32-71.138
  linux-image-2.6.32-71-powerpc-smp  2.6.32-71.138
  linux-image-2.6.32-71-powerpc64-smp  2.6.32-71.138
  linux-image-2.6.32-71-preempt   2.6.32-71.138
  linux-image-2.6.32-71-server    2.6.32-71.138
  linux-image-2.6.32-71-sparc64   2.6.32-71.138
  linux-image-2.6.32-71-sparc64-smp  2.6.32-71.138
  linux-image-2.6.32-71-versatile  2.6.32-71.138
  linux-image-2.6.32-71-virtual   2.6.32-71.138

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-2462-1
  CVE-2014-3610, CVE-2014-3611

Package Information:
  https://launchpad.net/ubuntu/+source/linux/2.6.32-71.138



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