• Bug#1032375: memtest86+: sign with Debian mok keys

    From Huey Chen@21:1/5 to All on Sat Jul 19 01:10:01 2025
    Package: memtest86+
    Version: 7.20-1
    Followup-For: Bug #1032375
    X-Debbugs-Cc: [email protected]

    Dear Maintainer,

    I have a workaround solution meanwhile.
    Create your own keys which will later be used with `mokutil` with the following script I have created for this scenario: https://codeberg.org/horsey_guy/MOK_Key_Create/raw/branch/main/create_keys.sh

    You can now use `sbsign --key {SOME_NAME}.key --cert {SOME_NAME}.crt /boot/memtest86+x64.efi --output /boot/memtest86+x64.efi.signed` (cannot in-place sign)
    Then symlink /boot/memtest86+x64.efi to /boot/memtest86+x64.efi.signed with `ln -sf /boot/memtestx86+64.efi.signed /boot/memtestx86+64.efi`.
    The ia32 variants can be signed too.

    Be sure to do the signing whenever memtest86+ is updated. You can make some sort of post-installation hook if that's possible to automate this.

    Now use mokutil or else the keys will be rejected: `mokutil --import path/to/cert.der`

    I have not tested this method although I will, but it should work as I have done some variation of this.

    It would be nice if memtest86+ could be signed with Debian's keys though.

    Sincerely,
    Huey Chen

    -- System Information:
    Debian Release: 13.0
    APT prefers unstable
    APT policy: (500, 'unstable'), (1, 'experimental')
    Architecture: amd64 (x86_64)
    Foreign Architectures: i386

    Kernel: Linux 6.15-amd64 (SMP w/12 CPU threads; PREEMPT)
    Kernel taint flags: TAINT_USER
    Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US Shell: /bin/sh linked to /usr/bin/dash
    Init: systemd (via /run/systemd/system)
    LSM: AppArmor: enabled

    Versions of packages memtest86+ depends on:
    ii grub-common 2.12-9

    memtest86+ recommends no packages.

    Versions of packages memtest86+ suggests:
    pn grub-efi | grub-pc <none>
    pn memtester <none>
    ii mtools 4.0.48-1

    -- no debconf information

    -- debsums errors found:
    debsums: changed file /boot/memtest86+ia32.efi (from memtest86+ package) debsums: changed file /boot/memtest86+x64.efi (from memtest86+ package)

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