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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8F7A6C433EF for ; Fri, 22 Oct 2021 01:45:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6752060FF2 for ; Fri, 22 Oct 2021 01:45:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231334AbhJVBr5 (ORCPT ); Thu, 21 Oct 2021 21:47:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52678 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230190AbhJVBr4 (ORCPT ); Thu, 21 Oct 2021 21:47:56 -0400 Received: from mail-ua1-x92d.google.com (mail-ua1-x92d.google.com [IPv6:2607:f8b0:4864:20::92d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 07487C061764; Thu, 21 Oct 2021 18:45:39 -0700 (PDT) Received: by mail-ua1-x92d.google.com with SMTP id f4so4868666uad.4; Thu, 21 Oct 2021 18:45:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=VWt6uqKTCCbsCNQyOaLjTBfNtiRbQoxiDY+LcfMpBc8=; b=JmnAy8kwgFEEicRCGgjVO0otnNga/dFuZfftJUkEsqvlQWrZ4MRq+ZJ4hvxOV+Fy07 q5DkJSksGZNxQnW7jjBWV/mol/fHdzZW4zBvAtSiE/Ik/ttLDFY8sb+tT/jPz3fzbs6r fvWNOkrA014tyYzkK+6KHe0a4zAsN1pXa0LszHDKS/51h4G2WPK3P36CYuhyKsBX5Apu dKZrGmcG4e2/87QUODg65LdZSZ0AxQMOuh+Y8aCeZOnqTdl8NjF0F2BqdKKfKiGSSkiU UmLrTdjwhWvf5FwJifq5TshIDMXBShDn1mm6HE1gcqFfRiynlIa3Vi/5tYrw0GqrDYxZ tuBA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=VWt6uqKTCCbsCNQyOaLjTBfNtiRbQoxiDY+LcfMpBc8=; b=hu6tkQwaKwNk0vWGaEgaF9q8Dxl7Sw/lA4wDyvwTVShRDSjgUt4WvONnBROFLWdoz6 RWJ55WgXn9Jv07G+hEP0Bi7rqw3s//vJUqKy8qbWu+EzB6+UVpMda/eNpT8R5qJ31BsI ipbdKEtmKx3WmqA7ouQXnMlSKgHqDStn/VMKwnbbq25f8w9idE7WRxcrZU8iYCKk5zim sxrQv9p4XglNJKDRQAa2HrFSXioyeA12igcVafvuZe4yprqjGA6OtI3QwgvqCFtBmabN UYAgc1lqjw44teizV2KuJPYSvRRyUZzudbzI1IpD6QKw7l+uvAsTsLzDybSQAa1Nae3w 6ySQ== X-Gm-Message-State: AOAM5331e37jAiERw/ziJw85/O0OLKMUlOuqMjawX2bIlVVxSbygK30V EWx+Ea/y/ZlzYnYOgfl2uycKSWJQTJ8= X-Google-Smtp-Source: ABdhPJwu+YbcfSozFiBh7WVDUy+QLzNt1z2VCcQQNUTujIw9CRKuWpaMW82yW7akt/WkVm/kpEAGCw== X-Received: by 2002:ab0:5741:: with SMTP id t1mr11182173uac.72.1634867139131; Thu, 21 Oct 2021 18:45:39 -0700 (PDT) Received: from t14s.localdomain ([2001:1284:f013:9215:811c:de3a:f39a:8a57]) by smtp.gmail.com with ESMTPSA id n18sm3905633vsk.22.2021.10.21.18.45.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 21 Oct 2021 18:45:38 -0700 (PDT) Received: by t14s.localdomain (Postfix, from userid 1000) id 39CA191F49; Thu, 21 Oct 2021 22:45:37 -0300 (-03) Date: Thu, 21 Oct 2021 22:45:37 -0300 From: Marcelo Ricardo Leitner To: Xin Long Cc: network dev , davem@davemloft.net, kuba@kernel.org, linux-sctp@vger.kernel.org, michael.tuexen@lurchi.franken.de Subject: Re: [PATCH net 0/7] sctp: enhancements for the verification tag Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-sctp@vger.kernel.org On Wed, Oct 20, 2021 at 07:42:40AM -0400, Xin Long wrote: > This patchset is to address CVE-2021-3772: > > A flaw was found in the Linux SCTP stack. A blind attacker may be able to > kill an existing SCTP association through invalid chunks if the attacker > knows the IP-addresses and port numbers being used and the attacker can > send packets with spoofed IP addresses. > > This is caused by the missing VTAG verification for the received chunks > and the incorrect vtag for the ABORT used to reply to these invalid > chunks. > > This patchset is to go over all processing functions for the received > chunks and do: > ... > > This patch series has been tested with SCTP TAHI testing to make sure no > regression caused on protocol conformance. Nice! Acked-by: Marcelo Ricardo Leitner