The Unix driver space with regards to security has been understudied compared to it’s vast attack surface. One juicy area that can be especially buggy and accessible in drivers, I/O control, has received much more attention on Windows than Unix OSes. In this presentation, I will give an introduction to this particular attack surface on Linux, why bugs here are a significant threat and show you how get started looking for vulnerabilities in drivers on the platform. I’ll also go into some of the tools and techniques available and talk about a new tool I’ve written that can help bug hunters dig into Unix device drivers.