From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7832C24EAA for ; Thu, 25 May 2023 21:49:46 +0000 (UTC) Received: from mail-qt1-x82b.google.com (mail-qt1-x82b.google.com [IPv6:2607:f8b0:4864:20::82b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1A20B170D for ; Thu, 25 May 2023 14:49:24 -0700 (PDT) Received: by mail-qt1-x82b.google.com with SMTP id d75a77b69052e-3f805d07040so2268591cf.3 for ; Thu, 25 May 2023 14:49:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1685051363; x=1687643363; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=9b9oQQEcQI1nKAm6uixVG0PKEiMtQci0LL4e5riL3yY=; b=Hjin/XYbx7VeVEP0X3YARthb2xefjOQhQU0+Qj7YBCpxMJ13D8pVDHGrh5RTqVbkvf cW0odLnmOToygKD9ts8kqgl8Y1S1R6fxT0eWHXWKR5K6WGzi5efPGG8qMdon2dYsoTCU 1C/cJSKFdtXpuFxH9oAYUlLyU5lsmCSgSazWUNsxT3JxgXFfBlZmrP0UWcUag0eiEP1q Ur8Qs/PUfrhBksfe0EmW6a5ImbCjwRzwyVNfqRx+Z5WgNQ1vAGpgvLOo4n9oeXsb/8sx naLWvuionS5Q4uQ0Fifsf4U8kHF6qtDLXzhbAk/Td0rbFhXa0jwrGTxseJ2Oy26Vi6xf MjNg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1685051363; x=1687643363; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=9b9oQQEcQI1nKAm6uixVG0PKEiMtQci0LL4e5riL3yY=; b=TPqOgxAQqsM5nomtVUcS2aY7TkcnqLNvtHtX/v/igChYw5vhwMLFUAzGLkjRrjc8wN gS/wuIFjx49l8lg0tjn0SOzmzcJW8UU1zfX+Zkspo9G6DvnphxuoR3iGpwrVfmWNrzrE Ul0FlwTonBEnPdlD13fumomHoAWFd4wOVnisAOJjSIpDjTQPeZaJBiBwe0xZ/LRR29kK 2Z2CMYzAgFex+zpt066r9OBfXv+e5orGuXx1SNx1IqN3S4IQkRZ635e2kG343+MgwLYe ASV1VFE1qZyY9HawOAMHhpTQDiGhx3Ty9lOLFzdy3U3ByvVdmm/T2ZZwmyVCQxQU6WfN HCSw== X-Gm-Message-State: AC+VfDyBCWNy/B7oZxDkfPrEpcaado6UsTcx1obR9qnaEaQ9ezeaghvH bEz8dvVf71tHYsZJ2GwTHHGXk2jTnvp56A== X-Google-Smtp-Source: ACHHUZ6SFJRhU18yCnx9kxWrc1xoOv8R64Mi9egL44gb55G9XixlOO6iIWNUplnal4eJRcB17CGOOQ== X-Received: by 2002:ac8:7d48:0:b0:3f8:364:70da with SMTP id h8-20020ac87d48000000b003f8036470damr1121880qtb.32.1685051362969; Thu, 25 May 2023 14:49:22 -0700 (PDT) Received: from wsfd-netdev15.ntdv.lab.eng.bos.redhat.com (nat-pool-bos-t.redhat.com. [66.187.233.206]) by smtp.gmail.com with ESMTPSA id x7-20020ac81207000000b003f7f66d5a0esm735742qti.44.2023.05.25.14.49.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 25 May 2023 14:49:22 -0700 (PDT) From: Xin Long To: network dev Cc: davem@davemloft.net, kuba@kernel.org, Eric Dumazet , Paolo Abeni , Thomas Graf , Alexander Duyck Subject: [PATCH net 3/3] rtnetlink: add the missing IFLA_GRO_ tb check in validate_linkmsg Date: Thu, 25 May 2023 17:49:17 -0400 Message-Id: X-Mailer: git-send-email 2.39.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM, RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net This fixes the issue that dev gro_max_size and gso_ipv4_max_size can be set to a huge value: # ip link add dummy1 type dummy # ip link set dummy1 gro_max_size 4294967295 # ip -d link show dummy1 |grep gro_max_size dummy addrgenmode eui64 ... gro_max_size 4294967295 Fixes: 0fe79f28bfaf ("net: allow gro_max_size to exceed 65536") Fixes: 9eefedd58ae1 ("net: add gso_ipv4_max_size and gro_ipv4_max_size per device") Reported-by: Xiumei Mu Signed-off-by: Xin Long --- net/core/rtnetlink.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index 68a58d0a7b79..4c7d84072bd4 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -2398,12 +2398,24 @@ static int validate_linkmsg(struct net_device *dev, struct nlattr *tb[], return -EINVAL; } + if (tb[IFLA_GRO_MAX_SIZE] && + nla_get_u32(tb[IFLA_GRO_MAX_SIZE]) > GRO_MAX_SIZE) { + NL_SET_ERR_MSG(extack, "too big gro_max_size"); + return -EINVAL; + } + if (tb[IFLA_GSO_IPV4_MAX_SIZE] && nla_get_u32(tb[IFLA_GSO_IPV4_MAX_SIZE]) > dev->tso_max_size) { NL_SET_ERR_MSG(extack, "too big gso_ipv4_max_size"); return -EINVAL; } + if (tb[IFLA_GRO_IPV4_MAX_SIZE] && + nla_get_u32(tb[IFLA_GRO_IPV4_MAX_SIZE]) > GRO_MAX_SIZE) { + NL_SET_ERR_MSG(extack, "too big gro_ipv4_max_size"); + return -EINVAL; + } + if (tb[IFLA_AF_SPEC]) { struct nlattr *af; int rem, err; -- 2.39.1