[Bug 1565950] Re: Grub 2 fails to boot a kernel on a luks encrypted volume with Secure Boot enabled

[semreh]

This could affect people using 'non-standard' modules not included in
the standard distribution. For example, I use NILFS2 for all my
filesystems, and if the signed grubx64.efi does not include that, I
won't be able to boot. It might be a bit esoteric, but it points to a
general problem: either all possible modules are included in the signed
grub64x.efi, which some people might object to on size and/or attack
surface grounds, or some are omitted, causing problems for people who
wish to boot securely with modules not included in the standard
distribution.

I vote for including all modules, but I have no problems with the size
grub64x.efi becomes, and I'm less worried about the attack surface than
some others might be.

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https://bugs.launchpad.net/bugs/1565950

Title:
  Grub 2 fails to boot a kernel on a luks encrypted volume with Secure
  Boot enabled

Status in grub2 package in Ubuntu:
  Fix Released

Bug description:
  Booting in UEFI  Secure Boot requires that all code loaded up to and
  including the OS kernel be signed.  This includes all grub modules.
  This is accomplished by including selected modules in a single signed
  binary.  However, the modules required for grub to use an encrypted
  volume have been omitted from the binary package and therefore Ubuntu
  cannot boot from an encrypted volume with Secure Boot enabled.  This
  can be corrected as follows.

  
  The debian/build-efi-images file needs to have lines 136-140 changed from:

  GRUB_MODULES="$CD_MODULES
  	lvm
  	mdraid09
  	mdraid1x
  	"

  to:

  GRUB_MODULES="$CD_MODULES
  	cryptodisk
  	gcry_arcfour
  	gcry_blowfish
  	gcry_camellia
  	gcry_cast5
  	gcry_crc
  	gcry_des
  	gcry_dsa
  	gcry_idea
  	gcry_md4
  	gcry_md5
  	gcry_rfc2268
  	gcry_rijndael
  	gcry_rmd160
  	gcry_rsa
  	gcry_seed
  	gcry_serpent
  	gcry_sha1
  	gcry_sha256
  	gcry_sha512
  	gcry_tiger
  	gcry_twofish
  	gcry_whirlpool
  	luks
  	lvm
  	mdraid09
  	mdraid1x
  	"

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