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 32CE0B640; Thu, 16 Apr 2026 01:31:16 +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=1776303077; cv=none; b=LdhGkLQqsya8BZjh3QgzB4BIhsf4W78py++20Hdi5renI042jW1+/Ig1iMlyflKk80mcZ+nyf2MM+aYNX29HU5Ctr2O4Hbgi4er2mZ69P4aRLi7PSTQpR7pXy/mo11YNk/CU6E+ogDYjKBv9Y8AWqrhG8uN67GJ/8PckKyDX31A= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776303077; c=relaxed/simple; bh=aYSgQvT+PZxYyGPJb6C7g6YeX+WiAbZcu8eRnaH6H6Y=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=DXqtmqVtjx5G1O6f0NUpwqB+1avGWkNBSTdl2jdf0b+kzT3xgsv5+wdThcu/iN/cxSqe9d6fPuGz8rXeVyK0w4PaWPcsLD1bi45DILoHzticpPGBMdSaQmmkBQ/vL+VB6CWfqCWYiSezkMV9QkusBUNXpJLUv4g0RrQcpcfaO0Y= 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=Uf2eixts; 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="Uf2eixts" Received: from localhost.localdomain (mail-agni [217.70.190.124]) by mail.netfilter.org (Postfix) with ESMTPSA id D93116017E; Thu, 16 Apr 2026 03:31:13 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=netfilter.org; s=2025; t=1776303074; bh=RBi82MRm5pfmYw2R+MLbGyGBquLLveo8OLo+q1xI5Sc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Uf2eixtsnNj5e1untSsSsOSAH4pucbTwM7QmG+IWBXGKlESUdfl05puegMYY8acBi 00sy5GkFdwYrbpcSxAYZSLjFWV1DE8EpuNyvpSDYLyI8GlanJz9CbZii6W+rNetGXZ 9xJ9hMueIKSnwvtI1AKBG25bpu2HbSgqyQHk242e38AZTpecid677DSNv5kH9NYjAZ Jteat+jUiGf9Lx/EZgN96SL6Xm4fjF3Fvm7FsCjvBf72BeNfIt/CaNAhJ7cDe+eFr5 GGYUAK4lRpfoZ4nTZNR8aTa+zQio2hYwEadgj96RXo8bfn6C09JsbJjWbzwBxNrBjH nMmNrzxChyIgg== 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 05/14] netfilter: nft_osf: restrict it to ipv4 Date: Thu, 16 Apr 2026 03:30:52 +0200 Message-ID: <20260416013101.221555-6-pablo@netfilter.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260416013101.221555-1-pablo@netfilter.org> References: <20260416013101.221555-1-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