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New AMD SinkClose flaw helps install nearly undetectable malware
(www.bleepingcomputer.com)
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this post was submitted on 10 Aug 2024
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Cybersecurity
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Maybe we could use this to disable the Intel ME equivalent for AMD on those generations.
PSP is required for x86 core initialisation.
But if you can get around the signing requirements, it would be trivial to make the psp firmware only do that. (Probably not trivial, but at least technically feasable)
I did want to expand on this, I'd be curious as to what Jeremy Soller found getting certain Ryzen mobile platforms working with coreboot.
Perhaps we'll need to wait for OpenSIL for more comprehensive support.
Aside from x86 core init, PSP is still required for specific OS security requirements. Can at least take solace in the fact that OEMs seem to have completely turned down MS Pluton.