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 05D091EF931; Tue, 15 Oct 2024 12:12:21 +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=1728994342; cv=none; b=eA2+9lrbcUVCcF9B8ZQBYUsol8KgRmcbszR7xKI5qFksRy4FhHGDxfAS3g1CtEMEFGAFZQqU5hkmPY6+M5AQS6NQ5wm0Z0MOLFnKyN3CSyIGtiXq7QskibcPvyLxdN4BJ6GutCV3YWC/oL8H1Gpfo/ckD6/rfdKcs2XuTEp5Y2g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728994342; c=relaxed/simple; bh=WfjGtkKAU/5kE9wctelf9W5tQiGudXYYcF/lk5Vzr60=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=CnijXr2zyszCXWW7ozl6o0bM97M1BRUdCjgT8zZ52z7fUtoDuSwmkPIC7K8yyVP2wsxCpzawDNyNviPv6HSDrGJORLtfGXSw1P8z53S0QX6b76yUiCzrSqgl8g9UXM51HVhLDsMuvhW1HCuHLtbW8p7DoZUpKQQqLKissN8j268= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=QQX+1BGt; 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="QQX+1BGt" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3FAFEC4CECF; Tue, 15 Oct 2024 12:12:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1728994341; bh=WfjGtkKAU/5kE9wctelf9W5tQiGudXYYcF/lk5Vzr60=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QQX+1BGtY/msqB3c39X7FV4atPJpuN8ze/GpshRqkjyWNnB0L/99hdNPe57Xe+zGE CDQkxq6bvHZpfESLExR5t2qc/Cg8MlqZb3Kgf/zdTVXYWrhJciUqES7vXKL6stj4h+ c+DK1tawB9pN6aj64bNqrxVUn8CbJZJ9elVKkS6o= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Florian Westphal , Pablo Neira Ayuso , Sasha Levin Subject: [PATCH 5.15 653/691] netfilter: fib: check correct rtable in vrf setups Date: Tue, 15 Oct 2024 13:30:01 +0200 Message-ID: <20241015112506.244495686@linuxfoundation.org> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241015112440.309539031@linuxfoundation.org> References: <20241015112440.309539031@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Florian Westphal [ Upstream commit 05ef7055debc804e8083737402127975e7244fc4 ] We need to init l3mdev unconditionally, else main routing table is searched and incorrect result is returned unless strict (iif keyword) matching is requested. Next patch adds a selftest for this. Fixes: 2a8a7c0eaa87 ("netfilter: nft_fib: Fix for rpath check with VRF devices") Closes: https://bugzilla.netfilter.org/show_bug.cgi?id=1761 Signed-off-by: Florian Westphal Signed-off-by: Pablo Neira Ayuso Signed-off-by: Sasha Levin --- net/ipv4/netfilter/nft_fib_ipv4.c | 4 +--- net/ipv6/netfilter/nft_fib_ipv6.c | 5 +++-- 2 files changed, 4 insertions(+), 5 deletions(-) diff --git a/net/ipv4/netfilter/nft_fib_ipv4.c b/net/ipv4/netfilter/nft_fib_ipv4.c index 0f6a58558bab6..273b64e3f2f92 100644 --- a/net/ipv4/netfilter/nft_fib_ipv4.c +++ b/net/ipv4/netfilter/nft_fib_ipv4.c @@ -66,6 +66,7 @@ void nft_fib4_eval(const struct nft_expr *expr, struct nft_regs *regs, .flowi4_scope = RT_SCOPE_UNIVERSE, .flowi4_iif = LOOPBACK_IFINDEX, .flowi4_uid = sock_net_uid(nft_net(pkt), NULL), + .flowi4_l3mdev = l3mdev_master_ifindex_rcu(nft_in(pkt)), }; const struct net_device *oif; const struct net_device *found; @@ -84,9 +85,6 @@ void nft_fib4_eval(const struct nft_expr *expr, struct nft_regs *regs, else oif = NULL; - if (priv->flags & NFTA_FIB_F_IIF) - fl4.flowi4_l3mdev = l3mdev_master_ifindex_rcu(oif); - if (nft_hook(pkt) == NF_INET_PRE_ROUTING && nft_fib_is_loopback(pkt->skb, nft_in(pkt))) { nft_fib_store_result(dest, priv, nft_in(pkt)); diff --git a/net/ipv6/netfilter/nft_fib_ipv6.c b/net/ipv6/netfilter/nft_fib_ipv6.c index 4239b8056b5bd..1a08b00aa3213 100644 --- a/net/ipv6/netfilter/nft_fib_ipv6.c +++ b/net/ipv6/netfilter/nft_fib_ipv6.c @@ -37,8 +37,6 @@ static int nft_fib6_flowi_init(struct flowi6 *fl6, const struct nft_fib *priv, if (ipv6_addr_type(&fl6->daddr) & IPV6_ADDR_LINKLOCAL) { lookup_flags |= RT6_LOOKUP_F_IFACE; fl6->flowi6_oif = get_ifindex(dev ? dev : pkt->skb->dev); - } else if (priv->flags & NFTA_FIB_F_IIF) { - fl6->flowi6_l3mdev = l3mdev_master_ifindex_rcu(dev); } if (ipv6_addr_type(&fl6->saddr) & IPV6_ADDR_UNICAST) @@ -71,6 +69,8 @@ static u32 __nft_fib6_eval_type(const struct nft_fib *priv, else if (priv->flags & NFTA_FIB_F_OIF) dev = nft_out(pkt); + fl6.flowi6_l3mdev = l3mdev_master_ifindex_rcu(dev); + nft_fib6_flowi_init(&fl6, priv, pkt, dev, iph); if (dev && nf_ipv6_chk_addr(nft_net(pkt), &fl6.daddr, dev, true)) @@ -161,6 +161,7 @@ void nft_fib6_eval(const struct nft_expr *expr, struct nft_regs *regs, .flowi6_iif = LOOPBACK_IFINDEX, .flowi6_proto = pkt->tprot, .flowi6_uid = sock_net_uid(nft_net(pkt), NULL), + .flowi6_l3mdev = l3mdev_master_ifindex_rcu(nft_in(pkt)), }; struct rt6_info *rt; int lookup_flags; -- 2.43.0