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294 How To Make Any AMD Zen CPU Always Generate 4 As a Random Number

Slashdot
EditorDavid @ Slashdot · 02/09/2025 16:34 EDT

How To Make Any AMD Zen CPU Always Generate 4 As a Random Number

Slashdot reader headlessbrick writes: Google security researchers have discovered a way to bypass AMD's security, enabling them to load unofficial microcode into its processors and modify the silicon's behaviour at will. To demonstrate this, they created a microcode patch that forces the chips to always return 4 when asked for a random number. Beyond simply allowing Google and others to customize AMD chips for both beneficial and potentially malicious purposes, this capability also undermines AMD's secure e

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