From patchwork Mon Oct 16 13:27:23 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johannes Nixdorf X-Patchwork-Id: 734823 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5D66DCDB484 for ; Mon, 16 Oct 2023 13:45:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233953AbjJPNpl (ORCPT ); Mon, 16 Oct 2023 09:45:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58298 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233869AbjJPNpj (ORCPT ); Mon, 16 Oct 2023 09:45:39 -0400 Received: from mail.avm.de (mail.avm.de [212.42.244.94]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1E924E6; Mon, 16 Oct 2023 06:45:34 -0700 (PDT) Received: from mail-auth.avm.de (dovecot-mx-01.avm.de [212.42.244.71]) by mail.avm.de (Postfix) with ESMTPS; Mon, 16 Oct 2023 15:45:32 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=avm.de; s=mail; t=1697463932; bh=WMHTWn0lzdZOJlUHydcATxCX7rNJUapqeqgSH/9Czxc=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=aeSwQC4kNzxsKoVOEG24z2ghHtJ3HcnBKZrokW+L7E3garrMeBmAaHW0ixzYTQ/lE pV0J6WcMnwfol76rJY1C47I1AdKiJOBDA5FwOVLkj8pATgyGG5373IwTw2FSrCdL6j kmweacdVj+P41M/V6VXK6NtRVkkopnmuD3Jrk99o= Received: from localhost (unknown [172.17.88.63]) by mail-auth.avm.de (Postfix) with ESMTPSA id AF9DD80463; Mon, 16 Oct 2023 15:45:32 +0200 (CEST) From: Johannes Nixdorf Date: Mon, 16 Oct 2023 15:27:23 +0200 Subject: [PATCH net-next v5 4/5] net: bridge: Set strict_start_type for br_policy MIME-Version: 1.0 Message-Id: <20231016-fdb_limit-v5-4-32cddff87758@avm.de> References: <20231016-fdb_limit-v5-0-32cddff87758@avm.de> In-Reply-To: <20231016-fdb_limit-v5-0-32cddff87758@avm.de> To: "David S. Miller" , Andrew Lunn , David Ahern , Eric Dumazet , Florian Fainelli , Ido Schimmel , Jakub Kicinski , Nikolay Aleksandrov , Oleksij Rempel , Paolo Abeni , Roopa Prabhu , Shuah Khan , Vladimir Oltean Cc: bridge@lists.linux-foundation.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, Johannes Nixdorf X-Mailer: b4 0.12.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1697462840; l=807; i=jnixdorf-oss@avm.de; s=20230906; h=from:subject:message-id; bh=WMHTWn0lzdZOJlUHydcATxCX7rNJUapqeqgSH/9Czxc=; b=T9u4sURSiCaNXZzQHRNZ49OmpzQLzcXSoa6jHXmSuSN0/chz3AUafsFqnGeMtjqfpjU1IKBto kNwPnMrNUWBAz5qDbdRWI/24/WcYh5FRu+O3YKuAn/J2A5e2+QRFySb X-Developer-Key: i=jnixdorf-oss@avm.de; a=ed25519; pk=KMraV4q7ANHRrwjf9EVhvU346JsqGGNSbPKeNILOQfo= X-purgate-ID: 149429::1697463932-6162842D-5BCF9E75/0/0 X-purgate-type: clean X-purgate-size: 809 X-purgate-Ad: Categorized by eleven eXpurgate (R) http://www.eleven.de X-purgate: This mail is considered clean (visit http://www.eleven.de for further information) X-purgate: clean Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Set any new attributes added to br_policy to be parsed strictly, to prevent userspace from passing garbage. Signed-off-by: Johannes Nixdorf --- net/bridge/br_netlink.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c index 0c3cf6e6dea2..5ad4abfcb7ba 100644 --- a/net/bridge/br_netlink.c +++ b/net/bridge/br_netlink.c @@ -1229,6 +1229,8 @@ static size_t br_port_get_slave_size(const struct net_device *brdev, } static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = { + [IFLA_BR_UNSPEC] = { .strict_start_type = + IFLA_BR_FDB_N_LEARNED }, [IFLA_BR_FORWARD_DELAY] = { .type = NLA_U32 }, [IFLA_BR_HELLO_TIME] = { .type = NLA_U32 }, [IFLA_BR_MAX_AGE] = { .type = NLA_U32 },