On 26.11.2025 14:22, Andrew Cooper wrote:
> This was potentially helpful when the chickenbit was the only mitigation and
> microcode had not been released, but that was two years ago.
> 
> Zenbleed microcode has been avaialble since December 2023, and the subsequent
> Entrysign signature vulnerability means that firmware updates block OS-loading
> and more OS-loadable microcode will be produced for Zen2.
> 
> i.e. the Zenbleed fix is not going to appear at runtime these days.
> 
> No practical change.
> 
> Signed-off-by: Andrew Cooper <[email protected]>

Acked-by: Jan Beulich <[email protected]>
on the basis that people unwilling to update their firmware already accept
being vulnerable. To them this might be a perceived regression, i.e. not
exactly "No practical change", but we kind of accept that possibility.

Jan

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