Windows 10: KB5025885 update - Impact of Linux OS loading in secure boot mode

Discus and support KB5025885 update - Impact of Linux OS loading in secure boot mode in Windows 10 Installation and Upgrade to solve the problem; Hi,We are using the shimx64.efi signed from Microsoft for loading our SUSE based Linux kernel in secure boot mode.What is the impact after updating the... Discussion in 'Windows 10 Installation and Upgrade' started by Muthuvel K, Jan 30, 2024.

  1. MUTHUVEL K
    Muthuvel K Win User

    KB5025885 update - Impact of Linux OS loading in secure boot mode


    Hi,We are using the shimx64.efi signed from Microsoft for loading our SUSE based Linux kernel in secure boot mode.What is the impact after updating the KB5025885 BlackLotus UEFI bootkit to our Linux distro loading in secure boot mode.Thanks,Muthuvel K

    :)
     
    Muthuvel K, Jan 30, 2024
    #1
  2. DAMN_SMOOTH
    Damn_Smooth Win User

    Windows 8 Secure Boot Feature: Not So Secure?

    So Linux is switching to secure boot also? Or they have to because of UEFI?
     
    Damn_Smooth, Jan 30, 2024
    #2
  3. NEWTEKIE1
    newtekie1 Win User
    Windows 8 Secure Boot Feature: Not So Secure?

    • Linux
    • Linux
    • Linux
    • Linux
    • Oh and OSX
    Here is a statement from a Kernal Developer at Red Hat:

    I'm not sure this exploits the legacy BIOS but rather it exploits the legacy boot method on MBR drives, injecting a signed key before the OS boots, which you are correct in that it has nothing to do with Windows 8. And the simplest fix would just be to require boot drives use GPT when Secure Boot is enabled in UEFI.
     
    newtekie1, Jan 30, 2024
    #3
  4. COOPFAB
    coopfab Win User

    KB5025885 update - Impact of Linux OS loading in secure boot mode

    Cannot Enter Safe Mode / Computer boots normally

    I'm running Win 10 Pro 1903.

    Here are the steps I have taken to get into safe mode: Start button, settings, update and security, recovery, advanced startup, troubleshoot, advanced options, startup settings, restart. The computer boots normally, not in safe mode. Any suggestions would be most helpful. Thanks in advance for your help and interest. .
     
    coopfab, Jan 30, 2024
    #4
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KB5025885 update - Impact of Linux OS loading in secure boot mode

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