Black Hat USA 2025 | Racing for Privilege

https://www.youtube.com/watch?v=ULXuhxj-WgA https://www.usenix.org/conference/usenixsecurity25/presentation/ruegge The main point is that Intel’s modern Spectre v2 defenses, especially eIBRS, can fail because branch predictor updates happen asynchronously. The researchers show that this timing creates “Branch…