From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH net-2.6 1/2] ethtool: Fix potential kernel buffer overflow in ETHTOOL_GRXCLSRLALL Date: Tue, 29 Jun 2010 01:01:05 -0700 (PDT) Message-ID: <20100629.010105.55857802.davem@davemloft.net> References: <1277750647.2089.19.camel@achroite.uk.solarflarecom.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, santwona.behera@sun.com To: bhutchings@solarflare.com Return-path: Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:44635 "EHLO sunset.davemloft.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751069Ab0F2IAy (ORCPT ); Tue, 29 Jun 2010 04:00:54 -0400 In-Reply-To: <1277750647.2089.19.camel@achroite.uk.solarflarecom.com> Sender: netdev-owner@vger.kernel.org List-ID: From: Ben Hutchings Date: Mon, 28 Jun 2010 19:44:07 +0100 > On a 32-bit machine, info.rule_cnt >= 0x40000000 leads to integer > overflow and the buffer may be smaller than needed. Since > ETHTOOL_GRXCLSRLALL is unprivileged, this can presumably be used for at > least denial of service. > > Signed-off-by: Ben Hutchings > Cc: stable@kernel.org Applied.