From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 AFE733D9041; Wed, 8 Apr 2026 18:53:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775674430; cv=none; b=lvEinvVUNo/KVAc6V/exwwP8SiIWPcRcosoZ18jbz7AuzgIHkgjtwqLl8SiprDqLKEH8b1zUQcNgSL04w2Zj8rn7iYRFEeBuST8o2i3thLaO7VhxRrcwuARCS0LNcp0HPqEGwyWUeEhzKXkyz480kjckL65BypRuE6zYkxctPNc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775674430; c=relaxed/simple; bh=q6ZEkMyzwMeh5jan9I3KzzXvpOtTSVh5MbY6muRloLE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=MOqp9vzas7GOp2Ey/mLz6RrJHuIQALV6dJwJrIkPJHx006PELg+x1yPRQ8C6NL5h+/MUgIVL80yxZ4LoguULngCHCz3DKFPSeFzrD2u1h/0+puLQxEJkbSU5O+b5heJc/s6n79c+0RYHoGup9/PwTnmE5a0hgkt19ZWBqhifixM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=kkg7C9eo; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="kkg7C9eo" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 459C9C19421; Wed, 8 Apr 2026 18:53:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1775674430; bh=q6ZEkMyzwMeh5jan9I3KzzXvpOtTSVh5MbY6muRloLE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=kkg7C9eonEtfb1PXHMdBA1qSAlTZmHf7m24Fcl70e/w8F7rk0BiiATK8vhJdP1joR v5qrrAC1NJ2ka/ZiVq4oeBFoEP623EgzvRlzS/BrjnlGYT2h3H/7My7UhP3n3nulYj Q6O3uuz0rsN546iA3X0fDqgDVhDvE9sk3UzvcM0g= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Pablo Neira Ayuso , Sasha Levin Subject: [PATCH 6.19 094/311] netfilter: nf_tables: reject immediate NF_QUEUE verdict Date: Wed, 8 Apr 2026 20:01:34 +0200 Message-ID: <20260408175942.924858648@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260408175939.393281918@linuxfoundation.org> References: <20260408175939.393281918@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: Pablo Neira Ayuso [ Upstream commit da107398cbd4bbdb6bffecb2ce86d5c9384f4cec ] nft_queue is always used from userspace nftables to deliver the NF_QUEUE verdict. Immediately emitting an NF_QUEUE verdict is never used by the userspace nft tools, so reject immediate NF_QUEUE verdicts. The arp family does not provide queue support, but such an immediate verdict is still reachable. Globally reject NF_QUEUE immediate verdicts to address this issue. Fixes: f342de4e2f33 ("netfilter: nf_tables: reject QUEUE/DROP verdict parameters") Signed-off-by: Pablo Neira Ayuso Signed-off-by: Sasha Levin --- net/netfilter/nf_tables_api.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index fdbb1e20499bd..0349787e18465 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -11667,8 +11667,6 @@ static int nft_verdict_init(const struct nft_ctx *ctx, struct nft_data *data, switch (data->verdict.code) { case NF_ACCEPT: case NF_DROP: - case NF_QUEUE: - break; case NFT_CONTINUE: case NFT_BREAK: case NFT_RETURN: @@ -11703,6 +11701,11 @@ static int nft_verdict_init(const struct nft_ctx *ctx, struct nft_data *data, data->verdict.chain = chain; break; + case NF_QUEUE: + /* The nft_queue expression is used for this purpose, an + * immediate NF_QUEUE verdict should not ever be seen here. + */ + fallthrough; default: return -EINVAL; } -- 2.53.0