From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7D3191A239D for ; Fri, 2 May 2025 04:54:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746161674; cv=none; b=s2MmLJsY3bngQ8j3JxGLJpwWDOZOKlr57Oxtz4tY+m2vGf0+n2CLCOpeunwNPqWmxe6ZKP8+eaQ89razJL89JSYV9/v0pbd/89ImycZyPJ6CfOJ5sru6VHlK1oXZfi47SfA2yOVNWRgBJzEGH4tcKouMPec0kXCLPEh6UzdtIiI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746161674; c=relaxed/simple; bh=U8MCDGLeLIWXPklvwj16NOg6iZMVTcu6zSXsprGLL4w=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=khGJRwK3xxY2kZPTQ28Pc6iDiDCEvzjnzWsL/X8uOsDbMGyYZma3ShzVNQrOrdyJpSsRBJsLAQ64wS4uFNtV+G+l/kFjQlw/RqfJPbqJDwPxEed8BuHKaikO7HlX0hA926Zcr/ljea4RbrTNKyCUpQP6gZTc9tXWhd9mZeNQXLo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=nzHF4wfW; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="nzHF4wfW" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 57CBEC4CEE4; Fri, 2 May 2025 04:54:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1746161673; bh=U8MCDGLeLIWXPklvwj16NOg6iZMVTcu6zSXsprGLL4w=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=nzHF4wfWCe8P51N8diVvhxnaw1KFtvgVZHoF7CUFNYq1FJjesxbkvJbStrgEtL/ly k4itbFGSnMQKG/jEucfNiQWyZljqBFSwlC5xkIcgqX23F4M7glOmaFgE0sZ/2w0w8C obp6Xlbi36J7AWJhwfTY5JJ+qgwhRJs/4vKaq8Yw= Date: Fri, 2 May 2025 06:54:30 +0200 From: Greg KH To: Dionna Amalie Glaze Cc: stable@vger.kernel.org, Jarkko Sakkinen , Stefano Garzarella Subject: Re: Please backport 980a573621ea to 6.12, 6.14 Message-ID: <2025050202-diving-palatable-b44c@gregkh> References: <2025050151-recharger-cavity-b628@gregkh> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: On Thu, May 01, 2025 at 01:06:34PM -0700, Dionna Amalie Glaze wrote: > On Thu, May 1, 2025 at 11:04 AM Greg KH wrote: > > > > On Thu, May 01, 2025 at 09:48:59AM -0700, Dionna Amalie Glaze wrote: > > > 980a573621ea ("tpm: Make chip->{status,cancel,req_canceled} opt") > > > > > > This is a dependent commit for the series of patches to add the AMD > > > SEV-SNP SVSM vTPM device driver. Kernel 6.11 added SVSM support, but > > > not support for the critical component for boot integrity that follows > > > the SEV-SNP threat model. That series > > > https://lore.kernel.org/all/20250410135118.133240-1-sgarzare@redhat.com/ > > > is applied at tip but is not yet in the mainline. > > > > How does this fix a bug in these stable branches now? > > I find that the inability to use the main purpose of SVSM support for > trusted boot integrity is a security bug according to the SEV-SNP > threat model. That is a new feature, sorry. Just use new kernel versions if you wish to have this. greg k-h