Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750749AbdLMFSP (ORCPT ); Wed, 13 Dec 2017 00:18:15 -0500 Received: from a.mx.secunet.com ([62.96.220.36]:46830 "EHLO a.mx.secunet.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750737AbdLMFSK (ORCPT ); Wed, 13 Dec 2017 00:18:10 -0500 Date: Wed, 13 Dec 2017 06:18:05 +0100 From: Steffen Klassert To: Eric Biggers CC: syzbot , , , , , Subject: Re: KASAN: stack-out-of-bounds Read in xfrm_state_find (3) Message-ID: <20171213051805.7z74wh7sglaflo4j@gauss3.secunet.de> References: <089e082d0cb803507c055e6d5318@google.com> <001a11445ed4514b28055e947b48@google.com> <20171201072743.47ztbmrql7ub327u@gauss3.secunet.de> <20171212210031.GC185376@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <20171212210031.GC185376@gmail.com> User-Agent: NeoMutt/20170609 (1.8.3) X-G-Data-MailSecurity-for-Exchange-State: 0 X-G-Data-MailSecurity-for-Exchange-Error: 0 X-G-Data-MailSecurity-for-Exchange-Sender: 23 X-G-Data-MailSecurity-for-Exchange-Server: d65e63f7-5c15-413f-8f63-c0d707471c93 X-EXCLAIMER-MD-CONFIG: 2c86f778-e09b-4440-8b15-867914633a10 X-G-Data-MailSecurity-for-Exchange-Guid: 61E0528D-18B3-4C09-880C-6042B94D3C17 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1229 Lines: 31 On Tue, Dec 12, 2017 at 01:00:31PM -0800, Eric Biggers wrote: > Hi Steffen, > > On Fri, Dec 01, 2017 at 08:27:43AM +0100, Steffen Klassert wrote: > > On Wed, Nov 22, 2017 at 08:05:00AM -0800, syzbot wrote: > > > syzkaller has found reproducer for the following crash on > > > 0c86a6bd85ff0629cd2c5141027fc1c8bb6cde9c > > > git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git/master > > > compiler: gcc (GCC) 7.1.1 20170620 > > > .config is attached > > > Raw console output is attached. > > > C reproducer is attached > > > syzkaller reproducer is attached. See https://goo.gl/kgGztJ > > > for information about syzkaller reproducers > > > > > > > > > BUG: KASAN: stack-out-of-bounds in xfrm_state_find+0x30fc/0x3230 > > > net/xfrm/xfrm_state.c:1051 > > > Read of size 4 at addr ffff8801ccaa7af8 by task syzkaller231684/3045 > > > > The patch below should fix this. I plan to apply it to the ipsec tree > > after some advanced testing. > > > > Subject: [PATCH RFC] xfrm: Fix stack-out-of-bounds with misconfigured transport > > mode policies. > > > > Are you still planning to apply this? syzbot is still hitting this bug. It is already applied to the ipsec tree, will go upstream by the end of this week.