On Fri, Mar 05, 2021 at 09:48:53PM +0800, Michael Chang via Grub-devel wrote: > While attempting to dual boot Microsoft Windows with efi chainloader, it > failed with below error when secure boot was enabled. > > error ../../grub-core/kern/verifiers.c:119:verification requested but > nobody cares: /EFI/Microsoft/Boot/bootmgfw.efi. > > It is a regression, as previously it worked without problem. > > It turns out chainloading image has been locked down introduced by > > 578c95298 kern: Add lockdown support > > However we should consider it as verifiable object to shim to allow > booting in secure boot enabled mode. The chainloaded image could also > have trusted signature signed by vendor with their pubkey cert in db. > For that matters it's usage should not be locked down in secure boot, > and instead use shim to validate it's signature before running it. > > V2: > Keep GRUB_FILE_TYPE_EFI_CHAINLOADED_IMAGE in the lockdown list as it > ensures at least one verifer has validated the image. > > Signed-off-by: Michael Chang <mch...@suse.com>
Reviewed-by: Daniel Kiper <daniel.ki...@oracle.com> Daniel _______________________________________________ Grub-devel mailing list Grub-devel@gnu.org https://lists.gnu.org/mailman/listinfo/grub-devel
