From ehackingnews.com
According to AMD itself, AMD’s Zen 3 CPU architecture may include a feature that could be exploited by hackers in a Spectre-like side-channel attack.
With Zen 3, the speculative execution feature—which is a common feature in modern processors— is known as Predictive Store Forwarding (PSF). Essentially its task is to guess which instruction is most likely to be sent next through the use of branch prediction algorithms and fetch that command in anticipation. The aim is to speed up the microprocessor’s output pipeline, but the feature comes with risks, according to TechPowerUp.