The Discovery of Zenbleed ft. Tavis Ormandy

Video Description

How did Tavis Ormandy fuzz CPUs to discover Zenbleed? In this video we learn about the techniques to make this work! Watch part 2: https://www.youtube.com/watch?v=9EY_9KtxyPg buy my font (advertisement): https://shop.liveoverflow.com/ This video is sponsored by Google: https://security.googleblog.com/2023/08/downfall-and-zenbleed-googlers-helping.html Original Zenbleed Writeup: https://lock.cmpxchg8b.com/zenbleed.html AMD Security Bulletin: https://www.amd.com/en/resources/product-security/bulletin/amd-sb-7008.html Tavis Ormandy: https://twitter.com/taviso Sudoedit Exploit Series: https://www.youtube.com/playlist?list=PLhixgUqwRTjy0gMuT4C3bmjeZjuNQyqdx Documented Intel Performance Counters: https://perfmon-events.intel.com/skylake_server.html RIDL Video: https://www.youtube.com/watch?v=x_R1DeZxGc0 Chapters: 00:00 - Intro 01:22 - Zenbleed Proof of Concept 03:06 - Tavis Ormandy 04:18 - How Fuzzing Works 06:31 - CPU Performance Counters 11:06 - Detect Bugs with "Oracle Serialization" 15:09 - Fuzzing and Discovering Zenbleed 18:46 - Outro =[ ❤️ Support ]= → per Video: https://www.patreon.com/join/liveoverflow → per Month: https://www.youtube.com/channel/UClcE-kVhqyiHCcjYwcpfj9w/join 2nd Channel: https://www.youtube.com/LiveUnderflow =[ 🐕 Social ]= → Twitter: https://twitter.com/LiveOverflow/ → Streaming: https://twitch.tvLiveOverflow/ → TikTok: https://www.tiktok.com/@liveoverflow_ → Instagram: https://instagram.com/LiveOverflow/ → Blog: https://liveoverflow.com/ → Subreddit: https://www.reddit.com/r/LiveOverflow/ → Facebook: https://www.facebook.com/LiveOverflow/