[Bug 1914582] [NEW] grub-efi-arm64-signed does not have a maintainer script

[Dimitri John Ledkov]

Public bug reported:

[Impact]

 * Installation / upgrades of grub-efi-arm64-signed do not trigger grub-
install operation and thus do not upgrade grub on the ESP.

[Test Case]

 * sudo rm /boot/efi/EFI/ubuntu/grubaa64.efi
 * sudo apt install --reinstall grub-efi-arm64-signed
 * sudo ls /boot/efi/EFI/ubuntu/grubaa64.efi

[Where problems could occur]

 * Since signed arm64 grub is fairly recent, introduction of this
postinst, whilst similar to x86_64, could result in overriding self-
signed grub in ESP under /ubuntu/ boot path. This would be unfortunate,
but shouldn't break machines if they have stock MS keys enrolled.

** Affects: grub2-signed (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: grub2-signed (Ubuntu Focal)
     Importance: Undecided
         Status: New

** Affects: grub2-signed (Ubuntu Groovy)
     Importance: Undecided
         Status: New

** Affects: grub2-signed (Ubuntu Hirsute)
     Importance: Undecided
         Status: New

** Also affects: grub2-signed (Ubuntu Hirsute)
   Importance: Undecided
       Status: New

** Also affects: grub2-signed (Ubuntu Focal)
   Importance: Undecided
       Status: New

** Also affects: grub2-signed (Ubuntu Groovy)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1914582

Title:
  grub-efi-arm64-signed does not have a maintainer script

Status in grub2-signed package in Ubuntu:
  New
Status in grub2-signed source package in Focal:
  New
Status in grub2-signed source package in Groovy:
  New
Status in grub2-signed source package in Hirsute:
  New

Bug description:
  [Impact]

   * Installation / upgrades of grub-efi-arm64-signed do not trigger
  grub-install operation and thus do not upgrade grub on the ESP.

  [Test Case]

   * sudo rm /boot/efi/EFI/ubuntu/grubaa64.efi
   * sudo apt install --reinstall grub-efi-arm64-signed
   * sudo ls /boot/efi/EFI/ubuntu/grubaa64.efi

  [Where problems could occur]

   * Since signed arm64 grub is fairly recent, introduction of this
  postinst, whilst similar to x86_64, could result in overriding self-
  signed grub in ESP under /ubuntu/ boot path. This would be
  unfortunate, but shouldn't break machines if they have stock MS keys
  enrolled.

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