[Bug 2069232] Re: Missing measurements on confidential computing platforms (Intel TDX)

Mate Kukri 2069232 at bugs.launchpad.net
Thu Jan 9 15:20:51 UTC 2025


@hectorcao does this still need SRUd to Noble?

** Changed in: grub2-signed (Ubuntu)
       Status: New => Fix Released

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Title:
  Missing measurements on confidential computing platforms (Intel TDX)

Status in grub:
  Unknown
Status in The Kobuk project:
  Confirmed
Status in grub2-signed package in Ubuntu:
  Fix Released
Status in grub2-unsigned package in Ubuntu:
  Fix Released
Status in grub2-signed source package in Noble:
  New
Status in grub2-unsigned source package in Noble:
  New

Bug description:
  When we run a Confidential VM with grub bootlodaer on Intel TDX
  platform, the module tpm is not loaded and boot measurements are not
  done for the guest VM.

  This bug will prevent grub of doing measurements on confidential computing platform
  (the bug has been confirmed on Intel TDX). This lack of measurements will break the
  remote attestation

  See upstream bug : https://savannah.gnu.org/bugs/?65821

  Upstream fix :
  https://git.savannah.gnu.org/cgit/grub.git/commit/?id=86df79275d065d87f4de5c97e456973e8b4a649c

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