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geohot / 7900xtx

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[Question] Any way to disable AMD PSP / Platform Security Processor ? #5

Open MarArMar opened 5 months ago

MarArMar commented 5 months ago

First, props to George for the work

I have security & safety concerns about AMD "Platform Security Processor" or PSP

Intel "Management Engine" or ME is kind of the same with an OS ("Minix") loading before the user's OS & running with priviledges superior to the user OS kernel

Both Intel ME & AMD PSP are closed source.

Intel ME has been exploited before by malware https://www.eweek.com/security/newly-revealed-flaw-in-intel-processors-allows-undetectable-malware/

Additionally, "security by obscurity", or hiding code from the public, has been widely regarded as bad security practice.

Lastly I am a customer buying hardware, and I want control over what code is running on my home & work computer.

Thus, I would like to completely disable or remove AMD PSP as it appears as a security flaw to me and I do not trust the unknown & closed source code it is running.

If anyone knows how to do this, I will be very thankful for you to share it with us.

geohot commented 5 months ago

HAHAHAHA funny.

You don't own the GPU, AMD does. They have root, you don't. You are simply allowed to use it for certain restricted purposes. There's a PSP on AMD CPUs too.

Ironically, chips will start coming from China that are more free and open.

MarArMar commented 5 months ago

Damn, I hope code wizards will save us somehow

This "we always have root access to your hardware" thing is not right..

Hope you are right on China hardware, but I do not think it will be true, probably Intel ME & AMD PSP will be a source of inspiration for the CCP

Thanks anyway, btw 👍

geohot commented 5 months ago

CCP only cares about domestic. They don't mind exporting the best hardware.