As foreshadowed, HyperThreading considered harmful. Elegant #Foreshadow-NG proof-of-concept combines an ad-hoc virtual machine with a kernelspace "cache load gadget" thread to leak arbitrary data from the shared L1 cache. https://t.co/krLj8YTtgh
— Jo Van Bulck (@jovanbulck) January 21, 2019
„This is a PoC self-contained L1TF demonstrator that works in the presence of the Linux kernel's default L1TF mitigation. This code does by design not work on a vanilla Linux kernel. The purpose is to help validate and improve defenses and not build a practical attack.“ https://t.co/cjIqcmB8O2
— Adrian Rueegsegger (@Kensan42) January 21, 2019
If you ever wanted to test your L1TF mitigations, now is the time: https://t.co/eAAdw3O5vA #l1tf #intel #foreshadow
— Julian Stecklina (@blitzclone) January 21, 2019
https://lkml.org/lkml/2019/1/21/606
Firmware Security 