============================================================================
Ubuntu Security Notice USN-1579-1
September 21, 2012

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

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

- Ubuntu 12.04 LTS

Summary:

Several security issues were fixed in the kernel.

Software Description:
- linux: Linux kernel

Details:

Ben Hutchings reported a flaw in the Linux kernel with some network drivers
that support TSO (TCP segment offload). A local or peer user could exploit
this flaw to to cause a denial of service. (CVE-2012-3412)

Jay Fenlason and Doug Ledford discovered a bug in the Linux kernel
implementation of RDS sockets. A local unprivileged user could potentially
use this flaw to read privileged information from the kernel.
(CVE-2012-3430)

Update instructions:

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

Ubuntu 12.04 LTS:
  linux-image-3.2.0-31-generic    3.2.0-31.50
  linux-image-3.2.0-31-generic-pae  3.2.0-31.50
  linux-image-3.2.0-31-highbank   3.2.0-31.50
  linux-image-3.2.0-31-omap       3.2.0-31.50
  linux-image-3.2.0-31-powerpc-smp  3.2.0-31.50
  linux-image-3.2.0-31-powerpc64-smp  3.2.0-31.50
  linux-image-3.2.0-31-virtual    3.2.0-31.50

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-1579-1
  CVE-2012-3412, CVE-2012-3430

Package Information:
  https://launchpad.net/ubuntu/+source/linux/3.2.0-31.50