[Bug 2057679] Re: systemd-stub fails to boot when loaded via peimage

[Launchpad Bug Tracker]

This bug was fixed in the package grub2-unsigned - 2.12~rc1-10ubuntu4.2

---------------
grub2-unsigned (2.12~rc1-10ubuntu4.2) mantic; urgency=medium

  * Revert "efi: Eliminate globals from the `peimage.c` chainloader"
    (LP: #2057679) (LP: #2054127)
  * Increase SBAT level to "grub.ubuntu,2" and "grub.peimage,2"
  * SECURITY UPDATE: Use-after-free in peimage module [LP: #2054127]
    - CVE-2024-2312
  * Source package generated from src:grub2 using make -f ./debian/rules
    generate-grub2-unsigned

 -- Mate Kukri <mate.kukri at canonical.com>  Thu, 21 Mar 2024 09:16:17
+0000

** Changed in: grub2-unsigned (Ubuntu Mantic)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/2057679

Title:
  systemd-stub fails to boot when loaded via peimage

Status in grub2-unsigned package in Ubuntu:
  Fix Released
Status in grub2-unsigned source package in Mantic:
  Fix Released
Status in grub2-unsigned source package in Noble:
  Fix Released

Bug description:
  systemd-stub fails to boot when loaded via peimage.

  This is because peimage internally allocates an ImageHandle for images
  it starts and loads. systemd-stub  will then pass its own ImageHandle
  as ParentImageHandle to the firmware's LoadImage() function to load
  and start the embedded Linux kernel.

  The UEFI spec doesn't elaborate on this being allowed or not, but it
  seems like edk2 based firmwares try to locate private data attached to
  such a ParentImageHandle, then assert.

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