From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C1D55C28E80 for ; Wed, 3 Mar 2021 11:03:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 80B3B64EDF for ; Wed, 3 Mar 2021 11:03:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345578AbhCCK6r (ORCPT ); Wed, 3 Mar 2021 05:58:47 -0500 Received: from mail.kernel.org ([198.145.29.99]:45940 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239582AbhCCAf2 (ORCPT ); Tue, 2 Mar 2021 19:35:28 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id E634F64FB0; Wed, 3 Mar 2021 00:34:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1614731681; bh=BDh207ZAqrr3mS94Pdy26gF2+LAmCf2Xc5f+sP/CPsk=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=j1eg14xJMPcr8O/WYQ/yKD3+Rm3DwE7O8/dSYN6YQs68j0we6d4KL/3jEX4QoupBq kq9odd0NYYrqCJJtZiuSiYKODHPMMpUuOOtFwqCJm0mFiD09QJBcrvtf6O159+C35Z Luj7zSyFN5V5FBprfgoOEdPL0hqz7+otOXhVHVH8= Date: Tue, 2 Mar 2021 16:34:40 -0800 From: Andrew Morton To: Phillip Lougher Cc: "linux-kernel@vger.kernel.org" Subject: Re: [PATCH] Squashfs: fix xattr id and id lookup sanity checks Message-Id: <20210302163440.730a51442f9ce87d728c9ffd@linux-foundation.org> In-Reply-To: <2069685113.2081245.1614583677427@webmail.123-reg.co.uk> References: <2069685113.2081245.1614583677427@webmail.123-reg.co.uk> X-Mailer: Sylpheed 3.5.1 (GTK+ 2.24.31; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 1 Mar 2021 07:27:57 +0000 (GMT) Phillip Lougher wrote: > The checks for maximum metadata block size is > missing SQUASHFS_BLOCK_OFFSET (the two byte length > count). What are the user visible consequences of this bug? > Cc: stable@vger.kernel.org > Signed-off-by: Phillip Lougher Fixes: f37aa4c7366e23f ("squashfs: add more sanity checks in id lookup") yes?