control: reassign -1 systemd

Hi Matteo,

On Tue, Sep 03, 2024 at 10:23:41AM +0000, Settenvini, Matteo wrote:
>Package: shim-signed
>Version: 1.44~1+deb12u1+15.8-1~deb12u1
>Severity: important
>
>Dear Maintainer,
>
>after updating the shim-signed package to 1.44~1+deb12u1+15.8~deb12u1,
>unlocking the LUKS drive automatically via the tpm as enrolled through
>systemd-cryptenroll fails because the value of PCR 7 changes.
>
>This is problematic in our setup, because only the IT administrator
>has the LUKS passphrase which can be used as a fallback unlock method.
>Therefore, manual intervention for unlocking and re-enrolling the TPM
>is needed.
>
>At least a NEWS entry should be displayed before the update, and
>possibly a solution to automatically re-enroll after a successful unlock
>via passphrase added (via systemd unit file? maybe a systemd wishlist
>item? `keyctl update` to reseal?).
>
>In any case, a blind update causes a serious regression for us. We
>understand this is intended behavior, but we should at least have
>a way to know before applying the update.

This sounds like a bug for the systemd folks to deal with, I'll be
honest. Any changes in the boot chain (shim/grub/etc.) may cause PCR
measurements to change, but we have no idea what might be depending on
those measurements.

Reassigning appropriately.

-- 
Steve McIntyre, Cambridge, UK.                                st...@einval.com
We don't need no education.
We don't need no thought control.

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