14 DAY TRIAL // Security vulnerabilities that were discovered in the Linux kernel packages, this time affecting the Ubuntu 10.04 LTS (Lucid Lynx) operating system, were announced by Canonical.
According to Canonical, a failure to validate input was discovered in the Linux kernel's Xen netback (network backend) driver. A user in a guest OS may exploit this flaw to cause a denial of service to the guest OS and other guest domains.
Also, 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.
The security flaws can be fixed if you upgrade your system(s) to the proper version of Linux, detailed in the official announcement.
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.