From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: DKIM-Filter: OpenDKIM Filter v2.11.0 smtp4.osuosl.org 2F7A3414C3 DKIM-Filter: OpenDKIM Filter v2.11.0 smtp4.osuosl.org 93118409AA 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= From: Johannes Nixdorf Date: Mon, 16 Oct 2023 15:27:23 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit 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> 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= Subject: [Bridge] [PATCH net-next v5 4/5] net: bridge: Set strict_start_type for br_policy List-Id: Linux Ethernet Bridging List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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: netdev@vger.kernel.org, bridge@lists.linux-foundation.org, Johannes Nixdorf , linux-kernel@vger.kernel.org, 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 }, -- 2.42.0