From owner-freebsd-net@FreeBSD.ORG Sun Jan 11 19:47:35 2004 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 6DE2116A4CE; Sun, 11 Jan 2004 19:47:35 -0800 (PST) Received: from sizone.org (mortar.sizone.org [65.126.154.242]) by mx1.FreeBSD.org (Postfix) with ESMTP id EAB5C43D31; Sun, 11 Jan 2004 19:47:32 -0800 (PST) (envelope-from dgilbert@daveg.ca) Received: by sizone.org (Postfix, from userid 66) id 31F1C307C6; Sun, 11 Jan 2004 22:47:32 -0500 (EST) Received: by canoe.dclg.ca (Postfix, from userid 101) id 6102D1D1FFC; Sun, 11 Jan 2004 22:40:03 -0500 (EST) From: David Gilbert MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <16386.5907.94237.791025@canoe.dclg.ca> Date: Sun, 11 Jan 2004 22:40:03 -0500 To: Andre Oppermann In-Reply-To: <40008FCD.90525A33@freebsd.org> References: <16384.14322.83258.940369@canoe.dclg.ca> <40008783.330FAFF4@freebsd.org> <40008FCD.90525A33@freebsd.org> X-Mailer: VM 7.17 under 21.4 (patch 14) "Reasonable Discussion" XEmacs Lucid cc: freebsd-net@freebsd.org cc: freebsd-current@freebsd.org cc: David Gilbert Subject: Re: off-by-one error in ip_fragment, recently. X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 12 Jan 2004 03:47:35 -0000 Further in followup to the ip_fragment() bug, at the crash, off = 1500, len = 1480 and ip->ip_len = 21248. So m_copym() is being called with off > len. Dave. -- ============================================================================ |David Gilbert, Independent Contractor. | Two things can only be | |Mail: dave@daveg.ca | equal if and only if they | |http://daveg.ca | are precisely opposite. | =========================================================GLO================