From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.netfilter.org (mail.netfilter.org [217.70.190.124]) (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 59DAB3C4542; Thu, 16 Apr 2026 13:15:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.190.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776345307; cv=none; b=UXMQSPQZelqSn55TjbTKdF1c7bW19kn/q1jq5Xxkgn5vrSGNHkh1hISABOvSlWqw8rGVQZOCMfbWriTZX5ZZ8KTJuCxpKyX0UNy4/tvtRHk4WYL9Ac7ZlpuYYRlCym/4vyME5XI+dZY4YAcflWzFcOi8tTtCLHQUBcMKhoC/TQI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776345307; c=relaxed/simple; bh=aYSgQvT+PZxYyGPJb6C7g6YeX+WiAbZcu8eRnaH6H6Y=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=UKK8fuR2fkm6m5ZHWMAWGxOtk2qzAH6UnAwnZZQ1rMN1n4OCN3D+PpEic7WG38rgXUCRNOei5+Nj3d0CKjGQ2E/3ZzWj9uec5anNeRarmG0fCUcEzB/a7WTHKx/Y2l9UXnPMeJJ2Ss+WoWp1Vwsrcdk/8guofqSR4MvqFc7yDqg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=netfilter.org; spf=pass smtp.mailfrom=netfilter.org; dkim=pass (2048-bit key) header.d=netfilter.org header.i=@netfilter.org header.b=vKwM+YI2; arc=none smtp.client-ip=217.70.190.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=netfilter.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=netfilter.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=netfilter.org header.i=@netfilter.org header.b="vKwM+YI2" Received: from localhost.localdomain (mail-agni [217.70.190.124]) by mail.netfilter.org (Postfix) with ESMTPSA id 5219A60255; Thu, 16 Apr 2026 15:15:04 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=netfilter.org; s=2025; t=1776345304; bh=RBi82MRm5pfmYw2R+MLbGyGBquLLveo8OLo+q1xI5Sc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=vKwM+YI2jBOlKhsBluh3IPy2Q/YPsw2Mgxu23TEYkO008N+C9rpsipNfyzN7z70Mr OhhDYn19loIk+SdZvteKMgJq5FuHPw3DsAmYQv0wt8fnBSHHX0aJPRe1mtAehzt+LE R0uD90Uh6D74ANvOBB+dIEBdOHQ3+T7o1mzAi39CMP13UjphAkuVF8xfohvGao7T8w 9VPgYnqACa1orKsZENTYBi3bmRcnX2uJZV9tR0dW9VRJMusK/Uv3tL2lXs060vJ7tT JDFsMGM/5GGn9d7SiOuNKkbobpOME4IrCrwhxBCwclsrqtnb3anfA5vGmvL/w6MlpJ F1oe0TzUJwAjA== From: Pablo Neira Ayuso To: netfilter-devel@vger.kernel.org Cc: davem@davemloft.net, netdev@vger.kernel.org, kuba@kernel.org, pabeni@redhat.com, edumazet@google.com, fw@strlen.de, horms@kernel.org Subject: [PATCH net 03/11] netfilter: nft_osf: restrict it to ipv4 Date: Thu, 16 Apr 2026 15:14:45 +0200 Message-ID: <20260416131453.308611-4-pablo@netfilter.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260416131453.308611-1-pablo@netfilter.org> References: <20260416131453.308611-1-pablo@netfilter.org> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit This expression only supports for ipv4, restrict it. Fixes: b96af92d6eaf ("netfilter: nf_tables: implement Passive OS fingerprint module in nft_osf") Acked-by: Florian Westphal Reviewed-by: Fernando Fernandez Mancera Signed-off-by: Pablo Neira Ayuso --- net/netfilter/nft_osf.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/net/netfilter/nft_osf.c b/net/netfilter/nft_osf.c index 1c0b493ef0a9..bdc2f6c90e2f 100644 --- a/net/netfilter/nft_osf.c +++ b/net/netfilter/nft_osf.c @@ -28,6 +28,11 @@ static void nft_osf_eval(const struct nft_expr *expr, struct nft_regs *regs, struct nf_osf_data data; struct tcphdr _tcph; + if (nft_pf(pkt) != NFPROTO_IPV4) { + regs->verdict.code = NFT_BREAK; + return; + } + if (pkt->tprot != IPPROTO_TCP) { regs->verdict.code = NFT_BREAK; return; @@ -114,7 +119,6 @@ static int nft_osf_validate(const struct nft_ctx *ctx, switch (ctx->family) { case NFPROTO_IPV4: - case NFPROTO_IPV6: case NFPROTO_INET: hooks = (1 << NF_INET_LOCAL_IN) | (1 << NF_INET_PRE_ROUTING) | -- 2.47.3