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Ubuntu 10.04 LTS USN-1606-1 Critical: Kernel Denial of Service Threat

ubuntu
Calendar Grey October 11, 2012
Scroller Ubuntu
Numerous vulnerabilities have been addressed in Fedora's Linux kernel to improve system security and performance.
Several security issues were fixed in the kernel.

Summary

Several security issues were fixed in the kernel.

Software Description:

- linux: Linux kernel

Details:

A flaw was found in how the Linux kernel's KVM (Kernel-based Virtual

Machine) subsystem handled MSI (Message Signaled Interrupts). A local

unprivileged user could exploit this flaw to cause a denial of service or

potentially elevate privileges. (CVE-2012-2137)

A flaw was found in how the Linux kernel passed the replacement session

keyring to a child process. An unprivileged local user could exploit this

flaw to cause a denial of service (panic). (CVE-2012-2745)

Topics%20covered

Topics Covered

security advisory denial of service kernel update critical Ubuntu kernel issue

Update Instructions

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

Ubuntu 10.04 LTS:
  linux-image-2.6.32-44-386       2.6.32-44.98
  linux-image-2.6.32-44-generic   2.6.32-44.98
  linux-image-2.6.32-44-generic-pae  2.6.32-44.98
  linux-image-2.6.32-44-ia64      2.6.32-44.98
  linux-image-2.6.32-44-lpia      2.6.32-44.98
  linux-image-2.6.32-44-powerpc   2.6.32-44.98
  linux-image-2.6.32-44-powerpc-smp  2.6.32-44.98
  linux-image-2.6.32-44-powerpc64-smp  2.6.32-44.98
  linux-image-2.6.32-44-preempt   2.6.32-44.98
  linux-image-2.6.32-44-server    2.6.32-44.98
  linux-image-2.6.32-44-sparc64   2.6.32-44.98
  linux-image-2.6.32-44-sparc64-smp  2.6.32-44.98
  linux-image-2.6.32-44-versatile  2.6.32-44.98
  linux-image-2.6.32-44-virtual   2.6.32-44.98

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-1606-1

CVE-2012-2137, CVE-2012-2745

Severity
critical
Lowest
Low
Medium
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Critical

October 11, 2012

Topics%20covered

Topics Covered

security advisory denial of service kernel update critical Ubuntu kernel issue

Package Information

https://launchpad.net/ubuntu/+source/linux/2.6.32-44.98

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