A recently published attack exploiting newer versions of the Linux kernel is getting plenty of notice because it works even when security enhancements are running and the bug is virtually impossible to detect in source code reviews. http://www.theregister.co.uk/2009/07/17/linux_kernel_exploit/
Bill Gates retired and is writing code to attack Linux!! It's his new hobby, he couldn't engage in it when he was in the Corporate world but he's a free agent now baby... :eek: