New vulnerabilities were found in the Linux kernel packages, this time affecting the Ubuntu 11.04 (Natty Narwhal) and Ubuntu 11.10 (Oneiric Ocelot) operating systems.
The following four Linux kernel vulnerabilities affect Ubuntu 11.04 (Natty Narwhal): CVE-2012-2745
The following two Linux kernel vulnerabilities affect Ubuntu 11.10 (Oneiric Ocelot): CVE-2012-3412
As usual, you can click on each one to see how it affects your system, or go here
for in-depth descriptions, as it affects other Linux operating systems as well.
The security flaws can be fixed if you upgrade your system(s) to the linux-image-2.6.38-16 (2.6.38-16.67)
package(s) for Ubuntu 11.04, and the linux-image-3.0.0-26 (3.0.0-26.42)
package(s) for Ubuntu 11.10.
Don't forget to reboot your computer after the upgrade!
For detailed instruction on how to upgrade your system see the following link: https://wiki.ubuntu.com/Security/Upgrades