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Ubuntu 10.04 LTS USN-2462-1 Moderate: Kernel DoS Issues

ubuntu
Calendar Grey January 13, 2015
Dist Ubuntu Esm H88
Ubuntu users must act to address Linux kernel vulnerabilities in USN-2462-1. Key steps include updating the kernel and applying security patches promptly
Several security issues were fixed in the kernel.

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)

Topics%20covered

Topics Covered

security advisory moderate denial of service security issue Ubuntu kernel

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

https://ubuntu.com/security/notices/USN-2462-1

CVE-2014-3610, CVE-2014-3611

Severity
important
Lowest
Low
Medium
High
Critical

January 13, 2015

Topics%20covered

Topics Covered

security advisory moderate denial of service security issue Ubuntu kernel

Package Information

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

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