On Do, 28.07.22 16:54, Petr Pisar (ppi...@redhat.com) wrote:

> > This sounds pretty awesome, actually. I'd like to see that get 
> > implemented...
> >
> Unfortunatelly (complex) file system drivers are not written with safety
> on mind. They rather prefer performance over security. If somebody signed a
> UEFI driver for ext4, there would be a storm of CVEs "Secure boot bypass with
> a contrived file system".

efifs just added uefi glue on top of grub's fs drivers.

Thus, if grub is fine to sign, then efifs is much much less risk,
given it's a fraction of the grub codebase, but actually mostly code
from the grub codebase.

But anyway, I am actually advocating for sticking to VFAT
everywhere. ext4 drivers in the boot loader only are necessary for the
upgrade path.

Lennart

--
Lennart Poettering, Berlin
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