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AMD Zen 3 CPUs vulnerable to Spectre-like attacks via PSF feature

Accepted submission by Anonymous Coward at 2021-04-03 14:43:42
Hardware

An Anonymous Coward writes:

US chipmaker AMD advised customers last week to disable a new performance feature if they plan to use CPUs for sensitive operations, as this feature is vulnerable to Spectre-like side-channel attacks.

Called Predictive Store Forwarding (PSF), this feature was added to AMD CPUs part of the company’s Zen 3 core architecture [amd.com], a processor series dedicated to gaming and high-performance computing, which launched in November 2020. (full article [therecord.media])

- whitepaper: .PDF [amd.com]

Original Submission