AMD's Zen 3 CPUs Are Susceptible To Spectre-Like Vulnerability

AMD’s Zen 3 CPUs Are Susceptible To Spectre-Like Vulnerability


AMD has published a whitepaper on a potential security vulnerability that affects the company’s latest Zen 3 processors. The side-channel exploit is similar to Spectre that affected a plethora of Intel processors three years ago.

With Zen 3, AMD introduced a new technology called Predictive Store Forwarding (PSF), which helps improve code execution performance by predicting the relationship between loads and stores. In the majority of the cases, PSF’s predictions are on the spot. However, there is still a slim chance that the prediction may not be accurate, which results in an incorrect CPU speculation.



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