[Bug 2061754] Re: nullboot 0.5.1

[Julian Andres Klode]

** Tags added: block-proposed

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Title:
  nullboot 0.5.1

Status in nullboot package in Ubuntu:
  Fix Released
Status in nullboot source package in Focal:
  New
Status in nullboot source package in Jammy:
  New
Status in nullboot source package in Noble:
  Fix Released

Bug description:
  [Impact]
  new upstream release; usual vendored dependency updates per Go MIR policy (vendor/ directory is automatically generated by go mod vendor based on go.mod); aligning with snapd 2.62; and support for shim 15.8 per the secboot dependency update.

  Targeted releases:

  1. noble
  2. jammy; after/when shim 15.8 lands there
  3. focal; after/when shim 15.8 lands there

  [Test plan]
  * Test suite passes

  * Deploy Azure CVM and TPM FDE
  * Upgrade to this new package and reboot
  * Boot should be successful
  * Double check bios_measurements_log to ensure that the newly update shim was used for boot (https://github.com/canonical/tcglog-parser/tree/master/tcglog-dump can be used to extract checksum of the shim binary used at boot and compared to the one shipped in nullboot)

  * CPC - build new image with nullboot preinstalled, and attempt to
  register and boot such an images as first time.

  We have set block-proposed to allow testing in noble-proposed to be
  carried out before migration to noble release pocket.

  [Where problems could occur]
  Resealing of Azure CVM machines could fail and they would need to be unlocked with a recovery key.

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