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Description of problem:

Can't boot, get following menu to screen when attempting to:

error: ../../grub-core/kern/efi/sb.c:150:bad shim signature.
error: ..../grub-core/loader/i386/efi/linux.c:208:you need to load the kernel first.
Press any key to continue..

Version-Release number of selected component (if applicable):
5.14.0-76.el9.x86_64 and 5.14.0-75.el9.x86_64 

How reproducible:
Always


Steps to Reproduce:
1. dnf update
2. reboot
3.

Actual results:
https://photos.app.goo.gl/zSYfBTwxgCiwBf9GA


Expected results:
A booting system

Additional info:
The last working kernel is kernel-5.14.0-71.el9.x86_64

@rharwood It looks like kernel -71 -72 -73 and -74 are signed properly in CentOS Stream, but after that the kernels are signed with the Test cert:

• pesign -l --in=vmlinuz                                      
---------------------------------------------
certificate address is 0x7f1b2bff3808
Content was not encrypted.
Content is detached; signature cannot be verified.
The signer's common name is Red Hat Test Certificate
No signer email address.
Signing time: Wed Mar 30, 2022
There were certs or crls included.
---------------------------------------------


Did this update to pesign cause any changes here? https://kojihub.stream.rdu2.redhat.com/koji/buildinfo?buildID=17784


Kernel -74 (signed properly): https://kojihub.stream.rdu2.redhat.com/koji/buildinfo?buildID=17731
Kernel -75 (signed with the test cert): https://kojihub.stream.rdu2.redhat.com/koji/buildinfo?buildID=17791

*** This bug has been marked as a duplicate of bug 2070940 ***