On May 2, Canonical announced in a security notice that new vulnerabilities were found in the Linux 3.5 kernel, which powers the Ubuntu 12.10 (Quantal Quetzal) Linux operating system, and that they’ve released a fix for all of them. In order to fix the security flaws, users are urged to upgrade their system(s) to the linux-image-3.5.0-28 (3.5.0-28.48) kernel package(s) using the command-line or a graphical package manager. For detailed instructions on how to upgrade your system to the latest kernel version available from Canonical, please access the following link: https://wiki.ubuntu.com/Security/Upgrades.