Intel 'Downfall': Severe flaw in billions of CPUs leaks passwords and much more

https://lemmy.world/post/3115044

Intel 'Downfall': Severe flaw in billions of CPUs leaks passwords and much more - Lemmy.world

Oh no.

Anyway.

I run AMD.

AMD isn’t perfect either…
Inception: how a simple XOR can cause a Microarchitectural Stack Overflow - Computer Security Group

Over the past one and a half years, we have studied two phenomena that enable an unprivileged attacker to leak arbitrary information on all modern AMD CPUs: Putting the two together gives rise to a new type of attack called Inception: we can inject future mispredictions through a previous misprediction that we trigger — in… Read

Computer Security Group
…All Ryzen and Epyc processors were found to have a very similar bug not too long ago, it’s actually addressed in the article. You might want to read it…
Here is a good write-up of Zenbleed for the Ryzen 2 and up vulnerability. It uses similar register optimisation and speculative execution to get the same effect.
Zenbleed