1. Ubuntu Security Notices
  2. USN-2036-1

USN-2036-1: Linux kernel vulnerabilities

Publication date

3 December 2013

Overview

Several security issues were fixed in the kernel.

Releases

Packages

Details

A flaw was discovered in the Linux kernel's KVM (kernel virtual machine).
An administrative user in the guest OS could leverage this flaw to cause a
denial of service in the host OS. (CVE-2012-2121)

Multiple integer overflow flaws were discovered in the Alchemy LCD frame-
buffer drivers in the Linux kernel. An unprivileged local user could
exploit this flaw to gain administrative privileges. (CVE-2013-4511)

A flaw was discovered in the Linux kernel's KVM (kernel virtual machine).
An administrative user in the guest OS could leverage this flaw to cause a
denial of service in the host OS. (CVE-2012-2121)

Multiple integer overflow flaws were discovered in the Alchemy LCD frame-
buffer drivers in the Linux kernel. An unprivileged local user could
exploit this flaw to gain administrative privileges. (CVE-2013-4511)

Update instructions

After a standard system update you need to reboot your computer to make all the necessary changes.

Learn more about how to get the fixes.

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.

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

Ubuntu Release Package Version
10.04 lucid linux-image-2.6.32-54-preempt –  2.6.32-54.116
linux-image-2.6.32-54-powerpc-smp –  2.6.32-54.116
linux-image-2.6.32-54-ia64 –  2.6.32-54.116
linux-image-2.6.32-54-generic-pae –  2.6.32-54.116
linux-image-2.6.32-54-virtual –  2.6.32-54.116
linux-image-2.6.32-54-lpia –  2.6.32-54.116
linux-image-2.6.32-54-sparc64 –  2.6.32-54.116
linux-image-2.6.32-54-386 –  2.6.32-54.116
linux-image-2.6.32-54-sparc64-smp –  2.6.32-54.116
linux-image-2.6.32-54-generic –  2.6.32-54.116
linux-image-2.6.32-54-powerpc –  2.6.32-54.116
linux-image-2.6.32-54-powerpc64-smp –  2.6.32-54.116
linux-image-2.6.32-54-server –  2.6.32-54.116
linux-image-2.6.32-54-versatile –  2.6.32-54.116

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References

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