The quest for ring 0
Federico Biancuzzi interviews French researcher Loïc Duflot to learn about the System Management Mode attack, how to mitigate it, what hardware is vulnerable, and why we should be concerned with recent X Server bugs.
A feature called System Management Mode included in modern x86 cpus opens the way to the land of kernel space and the quest for ring zero.
We start with a relevant quote from JRR Tolkien's Lord of the Rings trilogy:
"One Ring to rule them all, One Ring to find them, One Ring to bring them all and in the darkness bind them."
Could you introduce yourself?