From patchwork Mon Mar 22 10:08:10 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jason Wang X-Patchwork-Id: 1456475 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=c5ho5kOx; dkim-atps=neutral Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 4F3rNd39V1z9sVS for ; Mon, 22 Mar 2021 21:30:09 +1100 (AEDT) Received: from localhost ([::1]:43318 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lOHp1-0002ZS-Fh for incoming@patchwork.ozlabs.org; Mon, 22 Mar 2021 06:30:07 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:56468) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lOHUf-0008Vo-ET for qemu-devel@nongnu.org; Mon, 22 Mar 2021 06:09:05 -0400 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:50816) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lOHUd-00037y-OY for qemu-devel@nongnu.org; Mon, 22 Mar 2021 06:09:05 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1616407743; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=qhbBKfx2W4NfQQAshNTUlzKsLIqAjdFIszn2ojgI8RM=; b=c5ho5kOxdkJvwZ0AuJthhogJDFQpcmrhrULvsWw0ZR1D/BVWXaRiHNkC5bko3VSI+/LGYb JlsVheKiqv4gAN5eD3IIbZ/aVS8xIgQZiM64wVQSCOV1+YBvnTX8vYfk0TK14vznxHdtcQ N/swgwCnbSautf1A8UdSXdGa6rrNh1k= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-396-2vNUhOUpPKa6Fr4nKNR1eQ-1; Mon, 22 Mar 2021 06:09:01 -0400 X-MC-Unique: 2vNUhOUpPKa6Fr4nKNR1eQ-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 3D7AF801817; Mon, 22 Mar 2021 10:08:59 +0000 (UTC) Received: from jason-ThinkPad-T430s.redhat.com (ovpn-12-83.pek2.redhat.com [10.72.12.83]) by smtp.corp.redhat.com (Postfix) with ESMTP id 7C8425D9CD; Mon, 22 Mar 2021 10:08:53 +0000 (UTC) From: Jason Wang To: qemu-devel@nongnu.org, peter.maydell@linaro.org Subject: [PULL 11/13] net/eth: Check iovec has enough data earlier Date: Mon, 22 Mar 2021 18:08:10 +0800 Message-Id: <1616407692-693-12-git-send-email-jasowang@redhat.com> In-Reply-To: <1616407692-693-1-git-send-email-jasowang@redhat.com> References: <1616407692-693-1-git-send-email-jasowang@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=jasowang@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=63.128.21.124; envelope-from=jasowang@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jason Wang , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Philippe Mathieu-Daudé We want to check fields from ip6_ext_hdr_routing structure and if correct read the full in6_address. Let's directly check if our iovec contains enough data for everything, else return early. Suggested-by: Stefano Garzarella Reviewed-by: Miroslav Rezanina Signed-off-by: Philippe Mathieu-Daudé Signed-off-by: Jason Wang --- net/eth.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/eth.c b/net/eth.c index 087aa71..6db943d 100644 --- a/net/eth.c +++ b/net/eth.c @@ -409,7 +409,7 @@ _eth_get_rss_ex_dst_addr(const struct iovec *pkt, int pkt_frags, size_t input_size = iov_size(pkt, pkt_frags); size_t bytes_read; - if (input_size < ext_hdr_offset + sizeof(*ext_hdr)) { + if (input_size < ext_hdr_offset + sizeof(*rthdr) + sizeof(*dst_addr)) { return false; }