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=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 9715BC433E1 for ; Wed, 29 Jul 2020 00:29:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7481D2078E for ; Wed, 29 Jul 2020 00:29:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730759AbgG2A3M (ORCPT ); Tue, 28 Jul 2020 20:29:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43850 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730536AbgG2A3M (ORCPT ); Tue, 28 Jul 2020 20:29:12 -0400 Received: from shards.monkeyblade.net (shards.monkeyblade.net [IPv6:2620:137:e000::1:9]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0A739C061794; Tue, 28 Jul 2020 17:29:12 -0700 (PDT) Received: from localhost (unknown [IPv6:2601:601:9f00:477::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 C6655128D3C95; Tue, 28 Jul 2020 17:12:25 -0700 (PDT) Date: Tue, 28 Jul 2020 17:29:10 -0700 (PDT) Message-Id: <20200728.172910.1838346370661943435.davem@davemloft.net> To: bkkarthik@pesu.pes.edu Cc: steffen.klassert@secunet.com, herbert@gondor.apana.org.au, kuznet@ms2.inr.ac.ru, yoshfuji@linux-ipv6.org, kuba@kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, gregkh@linuxfoundation.org, skhan@linuxfoundation.org, syzkaller-bugs@googlegroups.com Subject: Re: [PATCH] net: ipv6: fix slab-out-of-bounda Read in xfrm6_tunnel_alloc_spi From: David Miller In-Reply-To: <20200725124553.zunta65rf3j23cth@pesu.pes.edu> References: <20200725124553.zunta65rf3j23cth@pesu.pes.edu> X-Mailer: Mew version 6.8 on Emacs 26.3 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]); Tue, 28 Jul 2020 17:12:26 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: B K Karthik Date: Sat, 25 Jul 2020 18:15:53 +0530 > fix slab-out-of-bounds Read in xfrm6_tunnel_alloc_spi > by checking for existance of head for the list spi_byspi spi_byspi is an array, therefore as long as xfrm6_tn is not NULL then spi_byspi will also not be NULL.