GRUB2 SecureBoot Bypass 2021 and One Grub


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This one looks pretty interesting:

Not necessarily interesting in the security hole, but in this:

To ensure a unified approach, the version of GRUB2 for UEFI systems used in older Ubuntu releases is updated so that a single GRUB2 version can be used for all – this ensures that both the latest security fixes and mitigation features can be more easily adopted in these older releases.
That's going to streamline things - and hopefully not end up being a bad idea overall. It does mean that if one is vulnerable (in the future) then they're all vulnerable - but it also means that it's just one fix to resolve all of them.
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