Comment by gmueckl
2 hours ago
OK, so this works on AMD Jaguar according to the README. That's a architecture from 2013. There's notes about Zen 3 having a different base address for the memory controller registers, but that's it. What newer CPUs does attack actually work on?
Zen has completely different memory controller IP (UMC), that's configured at boot by AGESA/PSP. I doubt this exploit applies to modern Zen CPUs, however AMD are the only ones who could really confirm this.
That information is intentionally left out
Then publishing it in this incomplete state is just pointless fearmongering and will just make others fill in this information within the next couple of days. And the good guys likely won't be the first ones to do that.