Power guest secure boot with key management: kernel portion

Bug #2064321 reported by bugproxy
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
The Ubuntu-power-systems project
New
High
Ubuntu on IBM Power Systems Bug Triage
linux (Ubuntu)
New
High
Ubuntu on IBM Power Systems Bug Triage

Bug Description

Covering the kernel portion

Feature:

This feature comprises PowerVM LPAR guest OS kernel verification using static keys to extend the chain of trust from partition firmware to the OS kernel. GRUB and the host OS kernel are signed with 2 separate public key pairs. Partition firmware includes the the public verification key for GRUB in its build and uses it to verify GRUB. GRUB includes the public verification key for the OS kernel in its build and uses it to verify the OS kernel image

Test case:

If secure boot is switched off, any GRUB and kernel boots.
If secure boot is switched on:
  - Properly signed GRUB boots.
  - Improperly signed GRUB does not boot.
  - Tampered signed GRUB does not boot.
  - Properly signed kernels boot.
  - Improperly signed kernels do not boot.
  - Tampered signed kernels do not boot.
TPM PCRs are extended roughly following the TCG PC Client and UEFI specs as they apply to POWER.

bugproxy (bugproxy)
tags: added: architecture-ppc64le bugnameltc-205842 severity-critical targetmilestone-inin2404
Changed in ubuntu:
assignee: nobody → Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage)
affects: ubuntu → linux (Ubuntu)
bugproxy (bugproxy)
tags: added: targetmilestone-inin2410
removed: targetmilestone-inin2404
Revision history for this message
Frank Heimes (fheimes) wrote :

Hello, is there already a list of (kernel) commits that are required?
(So that we can check whether they are incl. in the Ubuntu kernel or not; and in case not do the submissions to the Ubuntu kernel team.)

Changed in ubuntu-power-systems:
assignee: nobody → Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage)
importance: Undecided → High
Changed in linux (Ubuntu):
importance: Undecided → High
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