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Date: Tue, 21 Oct 2025 18:07:33 +0200
From: Greg KH <gregkh@linuxfoundation.org>
To: Dimitri John Ledkov <dimitri.ledkov@surgut.co.uk>
Cc: stable@vger.kernel.org, regressions@lists.linux.dev,
	Nathan Chancellor <nathan@kernel.org>, masahiroy@kernel.org
Subject: Re: [REGRESSION] Secureboot violation for linux enrolled by-hash
 into db v6.17.4 and v6.18-rc1
Message-ID: <2025102104-battery-battering-038e@gregkh>
References: <CANBHLUjPbXYghPx5zDwLDcGKXb7v7+1u-bpZ=L9r=qW7vDZ=cg@mail.gmail.com>
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On Tue, Oct 21, 2025 at 03:00:56PM +0100, Dimitri John Ledkov wrote:
> If one enrolls linux kernel by-hash into db (for example using
> virt-fw-vars), the secureboot fails with security violation as EDK2
> computation of authenticode for the linux binary doesn't match the
> enrolled hash.
> 
> This is reproducible in AWS VMs, as well as locally with EDK2 builds
> with secureboot.
> 
> Not affected v6.17
> Not affected v6.17.3
> Affected v6.17.4
> Affected v6.18-rc1
> Affected v6.18-rc2

great, we are bug compatible :)

Once this is fixed in Linus's tree, we will be glad to take the fix into
the stable branch.

thanks,

greg k-h