Booted 20.04.1 ISO, in a 4k ovmf qemu KVM VM with secureboot MS keys and
installed secureboot-db from focal-proposed, checking in journalctl that
dbxupdate from 1.6~20.04.1  got applied.

Shut down the VM.

Attempted to boot 20.04 BETA iso, and it failed to boot with
Verification failed Security Violation. Thus dbx update was correctly
applied and vulnerable OS can no longer boot.

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https://bugs.launchpad.net/bugs/1890835

Title:
  secureboot-db 2020 update

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