Users have been asked to update their systems as soon as possible
Canonical announced that a few vulnerabilities had been found in the Linux kernel packages, this time affecting the OMAP4 kernel of the Ubuntu 11.10 (Oneiric Ocelot) operating system.The CVE-2013-0228, CVE-2013-0268, CVE-2013-0311, CVE-2013-0349, and CVE-2013-1773 Linux kernel vulnerabilities, affected Ubuntu 11.10 (Oneiric Ocelot) OMAP4.
According to Canonical, several security issues have been fixed in the kernel. A flaw was discovered in the Linux kernel's vhost driver used to accelerate guest networking in KVM-based virtual machines. A privileged guest user could exploit this flaw to crash the host system.
A complete description of the vulnerabilities can be found in the Ubuntu Security Notice.
The security flaws can be fixed if you upgrade your system to the linux-image-3.0.0-1222-omap4 package. Don't forget to reboot your computer after the upgrade!
ATTENTION: Due to an unavoidable ABI change, the kernel packages have a new version number, which will force you to reinstall and recompile all third-party kernel modules you might have installed. Moreover, if you use the linux-restricted-modules package, you have to update it as well to get modules that work with the new Linux kernel version.