7.8 - USN-1568-1

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

- Ubuntu 11.10

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 11.10:
linux-image-3.0.0-26-generic 3.0.0-26.42
linux-image-3.0.0-26-generic-pae 3.0.0-26.42
linux-image-3.0.0-26-omap 3.0.0-26.42
linux-image-3.0.0-26-powerpc 3.0.0-26.42
linux-image-3.0.0-26-powerpc-smp 3.0.0-26.42
linux-image-3.0.0-26-powerpc64-smp 3.0.0-26.42
linux-image-3.0.0-26-server 3.0.0-26.42
linux-image-3.0.0-26-virtual 3.0.0-26.42

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-1568-1
CVE-2012-3412, CVE-2012-3430

Package Information:
https://launchpad.net/ubuntu/+source/linux/3.0.0-26.42