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=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 912EEC11F87 for ; Mon, 12 Jul 2021 08:39:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8A5FE60FE7 for ; Mon, 12 Jul 2021 08:39:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346269AbhGLImL (ORCPT ); Mon, 12 Jul 2021 04:42:11 -0400 Received: from mail.kernel.org ([198.145.29.99]:37770 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1350501AbhGLHvE (ORCPT ); Mon, 12 Jul 2021 03:51:04 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 93C5E61A19; Mon, 12 Jul 2021 07:45:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1626075948; bh=7vn4Se3SpSdD9mpNsNqL5Rkr4YOpW0bi9PEe7FU4AZs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Fk1o+ZgcgPH4qSIGgo7er1AVl2YGCy6iq9FyYy24pee3DjHxnW4Fk+b7n97Iigvai vB3/Ki9931c0vaP/YS/tG8lOVh4L18SjpTqIv1dnLjasvBc/Tdbwno+98SOJ5HZEoQ iwXHg/+wpiI4ZI+IQovFKmvPLw9Rnq1brStjZ4Rg= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Geliang Tang , Matthieu Baerts , Jianguo Wu , Mat Martineau , Jakub Kicinski , Sasha Levin Subject: [PATCH 5.13 426/800] mptcp: make sure flag signal is set when add addr with port Date: Mon, 12 Jul 2021 08:07:29 +0200 Message-Id: <20210712061012.448212057@linuxfoundation.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210712060912.995381202@linuxfoundation.org> References: <20210712060912.995381202@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jianguo Wu [ Upstream commit eb5fb629f56da3f40f496c807da44a7ce7644779 ] When add address with port, it is mean to create a listening socket, and send an ADD_ADDR to remote, so it must have flag signal set, add this check in mptcp_pm_parse_addr(). Fixes: a77e9179c7651 ("mptcp: deal with MPTCP_PM_ADDR_ATTR_PORT in PM netlink") Acked-by: Geliang Tang Reviewed-by: Matthieu Baerts Signed-off-by: Jianguo Wu Signed-off-by: Mat Martineau Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin --- net/mptcp/pm_netlink.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c index 2469e06a3a9d..3f5d90a20235 100644 --- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -971,8 +971,14 @@ skip_family: if (tb[MPTCP_PM_ADDR_ATTR_FLAGS]) entry->flags = nla_get_u32(tb[MPTCP_PM_ADDR_ATTR_FLAGS]); - if (tb[MPTCP_PM_ADDR_ATTR_PORT]) + if (tb[MPTCP_PM_ADDR_ATTR_PORT]) { + if (!(entry->flags & MPTCP_PM_ADDR_FLAG_SIGNAL)) { + NL_SET_ERR_MSG_ATTR(info->extack, attr, + "flags must have signal when using port"); + return -EINVAL; + } entry->addr.port = htons(nla_get_u16(tb[MPTCP_PM_ADDR_ATTR_PORT])); + } return 0; } -- 2.30.2