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 9D45338759F; Mon, 20 Apr 2026 22:02:22 +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=1776722544; cv=none; b=Mh4nzBd2/TIS5hvYxC0MVK+zdSIP1eGRbxG/4wm0ycm2OEyl9L0BohQ8asnqXpnq78IrzKk3rHArf5BrK42g1rg/A1fFVxYjzykxL1Jv+MZnCHDesOgD3/T+qMsLNxTlwVzulcW4b2TbhvRkpCW/sJCPX/MAPhne7fHDD9pCTfk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776722544; c=relaxed/simple; bh=UBRXh4ebWqa8KGLePQsy/v1RQ0542IQzRAqco0tmKC8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=NVFhwA42Y59ECgvSBWJKnt2F1PRE9HFGPWYojCPofuAnmXlFayJhnn7xPxhPgJbAsDLjE1LWqSzSFKoYX1nVFCLt/1B3QyQTuX792CGhYvAboK3M4vSlTGlH4L9cCy6YOZToEtaj+PKb0GhjfXWNWoNvBvd30Udknhm/QUjBfKM= 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=L/8RGK9/; 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="L/8RGK9/" Received: from localhost.localdomain (mail-agni [217.70.190.124]) by mail.netfilter.org (Postfix) with ESMTPSA id 9A5DE60254; Tue, 21 Apr 2026 00:02:20 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=netfilter.org; s=2025; t=1776722541; bh=UuuWXoEE6butukVks1CZBTv9eqvABiBxY1NpJxr07OE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=L/8RGK9/YpDKss3yHjs2LV3IDavirFwhwSOZcH2SbhPUKtL/m5DqSDYE0PHs7Q+k9 DFA+Cu2+dtl5rSMU/Lp3PXArr4+C9QXLU28tmi7+fdKYX3ZI9j7TMaY1f1CiKq1+Wc JYbfBk0Jf7+ybZp/7xp7f7pquPzZyTYyxnXtFgk+dRirGizllNpuxCwPHWYVGnVaNm 59dqmATJFh7QTNpOYCWnt+1n/JMNDT8fT3mXdRPT1Wga/IMweWLDv3+JaoS5OKH2PC 6qwiYmSQLHhcMAeuLy5bmkH1IY0uM4JguXjovln6jFcHBlvDwsTT8emxYrlMCrvKnC yIa2Qj3A0nY3g== 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 1/8] netfilter: nft_osf: restrict it to ipv4 Date: Tue, 21 Apr 2026 00:02:08 +0200 Message-ID: <20260420220215.111510-2-pablo@netfilter.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260420220215.111510-1-pablo@netfilter.org> References: <20260420220215.111510-1-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 18003433476c..c02d5cb52143 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