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Thread: Ubuntu Community Help Wiki links to unpatched Kernel/BIOS corruption

  1. #1
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    Exclamation Ubuntu Community Help Wiki links to unpatched Kernel/BIOS corruption

    https://help.ubuntu.com/community/Boot-Repair?

    Links to 32bit iso which still contains Intel SPI bug in kernel causing BIOS corruption in a small number of machines.

    https://bugs.launchpad.net/boot-repair/+bug/1734147

    The wiki page is immutable so I'm unable to add a warning. Is there anyone in the community able to add a cautionary note?
    Last edited by delgonna; November 5th, 2021 at 07:15 PM.

  2. #2
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    Re: Ubuntu Community Help Wiki links to unpatched Kernel/BIOS corruption

    I have tried several times and I cannot see where in the community wiki page on Boot Repair that there is a link to a 32 bit ISO image that has a Linux kernel with the Intel SPI bug. I used to have permission to edit community Wiki pages. I do not have that permission any more but to place a warning on that page or to remove a link to an ISO image download site a person would need to know specifically the line in the instructions that need to be edited. You do not give this information.

    As regards the bug in the Linux kernel a fix has been in place since the second week of December 2017. The fix was made within days of the bug being reported. Besides which the only version of Ubuntu that may have the buggy kernel is Xenial = 16.04 and that would have had several Kernel updates since 2017.

    This bug was reported yesterday against boot repair and I cannot understand why. The person who reported the bug failed to add any comments. As far as I know Boot Repair does not install Linux kernels. A typical Boot Repair repair would be to reinstall the Grub boot loader. There is an option to "Purge kernels then reinstall last kernel (beta)". I do not know how that works. It may download the kernel from a Ubuntu site. In which case the replacement kernel would have been patched with the bug fix.

    Ubuntu developers have stopped providing 32 bit versions of Ubuntu. Any ISO image built after 22/12/2017 would have a patched kernel. Or a newer kernel that does not have the bug. Any ISO image with the 4.14 kernel would not have had this bug in the Linux kernel.

    Regards
    Last edited by grahammechanical; November 5th, 2021 at 08:52 PM.
    It is a machine. It is more stupid than we are. It will not stop us from doing stupid things.
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  3. #3
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    Re: Ubuntu Community Help Wiki links to unpatched Kernel/BIOS corruption

    Thread moved to Documentation and Community Wiki Discussions
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  4. #4
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    Re: Ubuntu Community Help Wiki links to unpatched Kernel/BIOS corruption

    Quote Originally Posted by grahammechanical View Post
    I have tried several times and I cannot see where in the community wiki page on Boot Repair that there is a link to a 32 bit ISO image that has a Linux kernel with the Intel SPI bug.
    I too had a look for it, and couldn't find it. I looked using the normal readers view of the page, then entered edit mode looking for links to ISO or a direct download link and didn't find any.

    You'll need to provide the text around the issue as I too didn't find it.

    The Ubuntu ISOs that had the issue I believe we all re-spun & new not-impacted ISOs exist on Ubuntu's site for download.

  5. #5
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    Re: Ubuntu Community Help Wiki links to unpatched Kernel/BIOS corruption

    https://help.ubuntu.com/community/Boot-Repair?

    Has a link to "Boot-Repair-Disk" which goes to the sourceforge project.

    From here if you click on "Files" 2 ISO images are available for download, the 32bit version of boot-repair-disk (last modified 2017-10-29) contains unpatched Kernel from Ubuntu 17.10. A Live session of this image with unpatched Kernel is able to corrupt the BIOS of certain computers.

    https://www.omgubuntu.co.uk/2018/01/...-10-lenovo-fix

    As seen in article Ubuntu 17.10 was patched and re-released 2018-01-11.

    Unfortunately this isn't just a theory I used 32bit boot-repair-disk on Fujitsu Q584 tablet, it's no longer able to boot from internal eMMC or USB. BIOS cannot save changes. "Fix" detailed at https://bugs.launchpad.net/boot-repair/+bug/1734147 requires a working OS to apply.

  6. #6
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    Re: Ubuntu Community Help Wiki links to unpatched Kernel/BIOS corruption

    As I see it, that's a problem that needs to be corrected on the sourceforge site; as no Ubuntu site refers to 17.10 (it was faulty) and quickly re-released & replaced as 17.10.1, but that reached EOL back in mid-2018 anyway & isn't listed on any download site either (except for old-releases.ubuntu.com)


  7. #7
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    Re: Ubuntu Community Help Wiki links to unpatched Kernel/BIOS corruption

    I mostly agree but the Official Ubuntu Help: https://help.ubuntu.com/community/Boot-Repair? could do with a warning, Obviously the problem is incredibly rare but it's concerning others could also brick their system following the Ubuntu Community Support Wiki.

  8. #8
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    Re: Ubuntu Community Help Wiki links to unpatched Kernel/BIOS corruption

    I've added a warning and provided a link to this thread.

    You can have a look & see if you're happy. Sorry I didn't credit you in edit (didn't think of it till too late) including a link to here only..

    Thank you for reporting the issue, and helping make our Ubuntu documentation better.

    FYI: Later 32-bit ISO were produced by Ubuntu until at least August-2020; as I'm involved in QA-testing and recall using my pentium 4/d/M devices for it; also in 18.10 & 19.04 (alpha) for two flavors (though they were earlier).

  9. #9
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    Re: Ubuntu Community Help Wiki links to unpatched Kernel/BIOS corruption

    Quote Originally Posted by guiverc View Post
    I've added a warning and provided a link to this thread.

    You can have a look & see if you're happy. Sorry I didn't credit you in edit (didn't think of it till too late) including a link to here only..

    Thank you for reporting the issue, and helping make our Ubuntu documentation better.

    FYI: Later 32-bit ISO were produced by Ubuntu until at least August-2020; as I'm involved in QA-testing and recall using my pentium 4/d/M devices for it; also in 18.10 & 19.04 (alpha) for two flavors (though they were earlier).
    Thanks, that's better worded than I would have managed if I'd been able to edit wiki page. Hopefully boot-repair developer will patch kernel soon.

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