From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793714705; b=mrkWPovvzSaxkNTTVDvg/0tkgUYuTf/a9oLMipObT6/5stKSYGwqg6IITcQbLPAJYqRh 32BwkaxELXjPFJkmgHry3B+6oUpYf8yQym1rYlNuTezSVpaXxftescYq//0HN2JHpL/yc Rx9EbdDo78Pq7ul7imoD7KkghLQ4AnqrBawPfNxft0Skgftxg9TW22Xtxx/N2USq6AHpc CuPTopuHwEFwpQ/qwLBQgJDUHDZbORgh4RLAkeCFyNnrE4LhrPptkvC9P3B8yMzZKhIEv KbzdRbeeUr8V5tSbwg7hcRDIYnNqcZtILPJREIwUoR/ZoF+0Ypjd2Hbfyi9HU1tSF9w== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793714705; h=Received:DKIM-Signature:Date:From:To:Cc:Subject:Message-ID: References:MIME-Version:Content-Type:Content-Disposition:In-Reply-To; bh=Z9sgzcHkxu/+0pAwfSMbdu/m/b2YeHjsiSjPVdj3CBw=; b=XetblfDOj+YIReMEb6DGgdOnpd87O7GTq6itEPl0VBi5gG811dTmseNXcoo0vtV23KAC MY8jQwjit0Gbobao0RzvhWCxruv+KQUCzxRfF5XMhZTLC+Ws2bKxd8EfqLRhcCJPT3j0G PcOhxR9GuszHyX7DNE/VjOfKcMXGLIIU7Hczcqidcta52/L5UD4XgZIU3CjiDivNfMwDW 1UPQ1pKkOqWtEoOkteC62QsLDygyUqVIMYYRuV4+r8X5G+FtG0GQ3iY41EsXffUtLySJ6 XQtIp1eOi3Iv/fXr98sPc2O/w4id13QqglrornI9ciIa8bAZUThJO4M5LxFUyNfvNfQ== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=aSA7kE8A; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DC649606A327; Tue, 3 Nov 2026 14:05:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=aSA7kE8A Received: by smtp.kernel.org (Postfix) with ESMTPSA id 20ED61F000C1; Tue, 3 Nov 2026 14:05:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1793714704; bh=Z9sgzcHkxu/+0pAwfSMbdu/m/b2YeHjsiSjPVdj3CBw=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=aSA7kE8A9FiD3o7+1mMovRZ4e3hvIMr05wH6CYj5r1WRX8iM43jOOYTQ6bwqPjyrx QaTNIs/fMyoX89Fx2cG4YHjb/M8pKA8M8VsZHuprG2Upm3PP8relAZtSuPvNKr+Gj4 GY4a2tVmNR6X/9Y2hr+hrGxYnnNyIvW1gzEp+wiw= Date: Tue, 3 Nov 2026 15:04:50 +0100 From: Greg Kroah-Hartman To: Kang Chen Cc: Dan Carpenter , Hans de Goede , Mauro Carvalho Chehab , Sakari Ailus , Andy Shevchenko , Raushan Kumar , Chelsy Ratnawat , linux-media , linux-kernel , linux-staging Subject: Re: =?utf-8?B?5Zue5aSN77yaW1BBVENI?= =?utf-8?Q?=5D?= media: atomisp: reject short _DSM packages Message-ID: <2026110339-joyfully-captivate-855b@gregkh> References: <20261103114121.74901-1-k.chen@smail.nju.edu.cn> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Tue, Nov 03, 2026 at 09:13:16PM +0800, Kang Chen wrote: > No. In the confidential computing (CVM) threat model, ACPI tables are > controlled by the host and are untrusted; BadAML (CCS'25) shows malicious > ACPI/AML can be used to attack the guest.  > And the kernel already validates many ACPI return values > (e.g. types, package counts, bounds). Are you sure that Linux supports that threat model at this point in time? And that this matters for this specific driver? I doubt that this media driver would ever be seriously considered for those types of situations :) thanks, greg k-h