From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754343AbdEDPI6 (ORCPT ); Thu, 4 May 2017 11:08:58 -0400 Received: from shards.monkeyblade.net ([184.105.139.130]:55670 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754223AbdEDPHr (ORCPT ); Thu, 4 May 2017 11:07:47 -0400 Date: Thu, 04 May 2017 11:07:45 -0400 (EDT) Message-Id: <20170504.110745.1166031278249644101.davem@davemloft.net> To: glider@google.com Cc: dvyukov@google.com, kcc@google.com, edumazet@google.com, kuznet@ms2.inr.ac.ru, linux-kernel@vger.kernel.org, netdev@vger.kernel.org Subject: Re: [PATCH] ipv4, ipv6: ensure raw socket message is big enough to hold an IP header From: David Miller In-Reply-To: <20170503150658.44421-1-glider@google.com> References: <20170503150658.44421-1-glider@google.com> X-Mailer: Mew version 6.7 on Emacs 24.5 / Mule 6.0 (HANACHIRUSATO) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.12 (shards.monkeyblade.net [149.20.54.216]); Thu, 04 May 2017 07:26:19 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Alexander Potapenko Date: Wed, 3 May 2017 17:06:58 +0200 > raw_send_hdrinc() and rawv6_send_hdrinc() expect that the buffer copied > from the userspace contains the IPv4/IPv6 header, so if too few bytes are > copied, parts of the header may remain uninitialized. > > This bug has been detected with KMSAN. > > Signed-off-by: Alexander Potapenko Applied and queued up for -stable, thanks.