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=-4.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 9B84AC04AB5 for ; Mon, 3 Jun 2019 22:18:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 794BF26A19 for ; Mon, 3 Jun 2019 22:18:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726836AbfFCWST (ORCPT ); Mon, 3 Jun 2019 18:18:19 -0400 Received: from shards.monkeyblade.net ([23.128.96.9]:36272 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726386AbfFCWST (ORCPT ); Mon, 3 Jun 2019 18:18:19 -0400 Received: from localhost (unknown [IPv6:2601:601:9f80:35cd::3d5]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) (Authenticated sender: davem-davemloft) by shards.monkeyblade.net (Postfix) with ESMTPSA id EDA361009E4EF; Mon, 3 Jun 2019 15:18:18 -0700 (PDT) Date: Mon, 03 Jun 2019 15:18:18 -0700 (PDT) Message-Id: <20190603.151818.2213401901831756808.davem@davemloft.net> To: edumazet@google.com Cc: netdev@vger.kernel.org, eric.dumazet@gmail.com, pablo@netfilter.org Subject: Re: [PATCH net-next] net: fix use-after-free in kfree_skb_list From: David Miller In-Reply-To: <20190602182418.117629-1-edumazet@google.com> References: <20190602182418.117629-1-edumazet@google.com> X-Mailer: Mew version 6.8 on Emacs 26.1 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]); Mon, 03 Jun 2019 15:18:19 -0700 (PDT) Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Eric Dumazet Date: Sun, 2 Jun 2019 11:24:18 -0700 > syzbot reported nasty use-after-free [1] > > Lets remove frag_list field from structs ip_fraglist_iter > and ip6_fraglist_iter. This seens not needed anyway. ... > Fixes: 0feca6190f88 ("net: ipv6: add skbuff fraglist splitter") > Fixes: c8b17be0b7a4 ("net: ipv4: add skbuff fraglist splitter") > Signed-off-by: Eric Dumazet > Cc: Pablo Neira Ayuso Applied, thanks Eric.