Explore the critical security vulnerabilities affecting modern processors in this keynote address by Greg Kroah-Hartman, a renowned Linux Kernel Developer and Fellow at The Linux Foundation. Delve into the intricacies of MDS (Microarchitectural Data Sampling), Fallout, and Zombieland attacks, understanding their implications for Linux and other operating systems. Learn about the challenges faced in implementing security fixes, the performance trade-offs involved, and the ongoing efforts to protect systems against these threats. Gain insights into the Linux kernel's approach to addressing these vulnerabilities, including discussions on Secure Enclaves, Intel patents, and the importance of proper documentation. Examine the broader impact on long-term support (LTS) versions and the industry's response to these security challenges.