UEFI Grub upgrade problems ?

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UEFI Grub upgrade problems ?

Postby andy55 » 2020-09-05 14:16

Hello,

there were recently issues with GRUB upgrade (BootHole). Is it safe now to just run "apt upgrade" ? Are the issues fixed ?
What if disk in my laptop is encrypted ?

Thanks
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Re: UEFI Grub upgrade problems ?

Postby Head_on_a_Stick » 2020-09-05 18:54

andy55 wrote:Is it safe now to just run "apt upgrade" ? Are the issues fixed ?

Yes and yes, respectively. See also https://www.debian.org/security/2020-GR ... ecureBoot/
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Re: UEFI Grub upgrade problems ?

Postby andy55 » 2020-09-27 20:19

My volume is encrypted - will it work as well ?
And do I need to prepare any rescue boot media (just in case) ?
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Re: UEFI Grub upgrade problems ?

Postby p.H » 2020-09-28 09:11

andy55 wrote:there were recently issues with GRUB upgrade (BootHole). Is it safe now to just run "apt upgrade" ? Are the issues fixed ?

The only issue in the initial release was a regression in chainloading another EFI boot loader such as Windows boot manager. It did not affect loading a Linux kernel and was fixed quickly.
andy55 wrote:My volume is encrypted - will it work as well ?

What volume ? If /boot is unencrypted (the default, as encrypted /boot is not supported by the Debian installer) it is irrelevant.
andy55 wrote:And do I need to prepare any rescue boot media (just in case) ?

As usual.
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Re: UEFI Grub upgrade problems ?

Postby sickpig » 2020-09-28 09:25

andy55 wrote:My volume is encrypted - will it work as well ?

My root and boot (I like how it rhymes) both are encrypted and I could upgrade without issues.
But you might want to wait as 10.6 Buster update is out though I have not heard of any issues with it yet. Prolly safe.
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Re: UEFI Grub upgrade problems ?

Postby p.H » 2020-09-28 09:34

There was no GRUB update in 10.6.
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