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A comment on Zenbleed.

Re:Zenbleed by slappy7 on Monday July 24, 2023 @09:08PM (#36856481)
Anybody know how to disable the chicken bit on Windows?

They're not planning to fix this until fucking December...

[ Parent | on HN ]
Re:Zenbleed by attentive on Tuesday July 25, 2023 @11:42PM (#36872817)
That's atrocious. Looks like microsoft doesn't care about AMD CPU as much as AMD doesn't care about windows.

As far as I can see there is no easy way to use MSR on windows.

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Re:Zenbleed by attentive on Sunday July 30, 2023 @04:39AM (#36929153)
I may be missing something, but since it basically exploits AVX that is easy to disable in win10.

bcdedit /set xsavedisable 1

and then reboot.

At least it fails the zenbleed POC.

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Re:Zenbleed by JDW1023 on Wednesday July 26, 2023 @02:17AM (#36873715)
It seems like there's an wrmsr (write MSR) tool for Windows [0]. I don't know whether it will work the same way as the linux verison.

[0]: https://learn.microsoft.com/en-us/windows-hardware/drivers/d...

[ Parent | on HN ]