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 CDEF9158D9B; Mon, 29 Jan 2024 17:09:33 +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=1706548173; cv=none; b=BEDRwizJR4JDLabrguOZOAL+IyPmJoGsiVBGNkZ1R+UNdH0IOxsRLDzSKILzcp/ZewPg3rRlszgzZ6LUsyzi4dysrewETNqvkGLg7CuhuyUgVeBfe4d7KyAfvttLaDuFp76XoIleBifKgYWghDs2PmChRZZjZjAxByrxC238Xac= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706548173; c=relaxed/simple; bh=iJE89hu2ZDowOmxoNDI7jpzXdutsDgIWZby8/i2KJCY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=hkO2q9hd8XeI8J+CsIsgOTQmSW1ptNF96+DYqxEqyZIO2IQa7ClXIInt1LUH9juosM6DfwzL5WIm7VdSgbbk5j9VaNOyVOxAGriQpHN1FVfh0FYSpSHmeD4nm44qBRExxWGtjm3ILLcQJnhx8UQctjXr/rsPoTZ+Oz0inXSmPnA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=OWhN5hVb; 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="OWhN5hVb" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9748AC433B2; Mon, 29 Jan 2024 17:09:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1706548173; bh=iJE89hu2ZDowOmxoNDI7jpzXdutsDgIWZby8/i2KJCY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OWhN5hVbzbWyZtQUIjex/0b382Ek8A//zJF4N/HleEp2KyGSGNXZ2XiUPUyak4G+K kYh3IVblTfWpHKeQwYfruUaxTbgMj1PyfG4GrEpswTzCgMVWLOZm4W7oVTYirHM9eD 0RpZX3gLVkIwuD3/8dnTzDDtd9VA6ECzl63sag3U= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Pablo Neira Ayuso , Sasha Levin Subject: [PATCH 6.7 201/346] netfilter: nf_tables: validate NFPROTO_* family Date: Mon, 29 Jan 2024 09:03:52 -0800 Message-ID: <20240129170022.315611358@linuxfoundation.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240129170016.356158639@linuxfoundation.org> References: <20240129170016.356158639@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 6.7-stable review patch. If anyone has any objections, please let me know. ------------------ From: Pablo Neira Ayuso [ Upstream commit d0009effa8862c20a13af4cb7475d9771b905693 ] Several expressions explicitly refer to NF_INET_* hook definitions from expr->ops->validate, however, family is not validated. Bail out with EOPNOTSUPP in case they are used from unsupported families. Fixes: 0ca743a55991 ("netfilter: nf_tables: add compatibility layer for x_tables") Fixes: a3c90f7a2323 ("netfilter: nf_tables: flow offload expression") Fixes: 2fa841938c64 ("netfilter: nf_tables: introduce routing expression") Fixes: 554ced0a6e29 ("netfilter: nf_tables: add support for native socket matching") Fixes: ad49d86e07a4 ("netfilter: nf_tables: Add synproxy support") Fixes: 4ed8eb6570a4 ("netfilter: nf_tables: Add native tproxy support") Fixes: 6c47260250fc ("netfilter: nf_tables: add xfrm expression") Signed-off-by: Pablo Neira Ayuso Signed-off-by: Sasha Levin --- net/netfilter/nft_compat.c | 12 ++++++++++++ net/netfilter/nft_flow_offload.c | 5 +++++ net/netfilter/nft_nat.c | 5 +++++ net/netfilter/nft_rt.c | 5 +++++ net/netfilter/nft_socket.c | 5 +++++ net/netfilter/nft_synproxy.c | 7 +++++-- net/netfilter/nft_tproxy.c | 5 +++++ net/netfilter/nft_xfrm.c | 5 +++++ 8 files changed, 47 insertions(+), 2 deletions(-) diff --git a/net/netfilter/nft_compat.c b/net/netfilter/nft_compat.c index 5284cd2ad532..f0eeda97bfcd 100644 --- a/net/netfilter/nft_compat.c +++ b/net/netfilter/nft_compat.c @@ -350,6 +350,12 @@ static int nft_target_validate(const struct nft_ctx *ctx, unsigned int hook_mask = 0; int ret; + if (ctx->family != NFPROTO_IPV4 && + ctx->family != NFPROTO_IPV6 && + ctx->family != NFPROTO_BRIDGE && + ctx->family != NFPROTO_ARP) + return -EOPNOTSUPP; + if (nft_is_base_chain(ctx->chain)) { const struct nft_base_chain *basechain = nft_base_chain(ctx->chain); @@ -595,6 +601,12 @@ static int nft_match_validate(const struct nft_ctx *ctx, unsigned int hook_mask = 0; int ret; + if (ctx->family != NFPROTO_IPV4 && + ctx->family != NFPROTO_IPV6 && + ctx->family != NFPROTO_BRIDGE && + ctx->family != NFPROTO_ARP) + return -EOPNOTSUPP; + if (nft_is_base_chain(ctx->chain)) { const struct nft_base_chain *basechain = nft_base_chain(ctx->chain); diff --git a/net/netfilter/nft_flow_offload.c b/net/netfilter/nft_flow_offload.c index ab3362c483b4..397351fa4d5f 100644 --- a/net/netfilter/nft_flow_offload.c +++ b/net/netfilter/nft_flow_offload.c @@ -384,6 +384,11 @@ static int nft_flow_offload_validate(const struct nft_ctx *ctx, { unsigned int hook_mask = (1 << NF_INET_FORWARD); + if (ctx->family != NFPROTO_IPV4 && + ctx->family != NFPROTO_IPV6 && + ctx->family != NFPROTO_INET) + return -EOPNOTSUPP; + return nft_chain_validate_hooks(ctx->chain, hook_mask); } diff --git a/net/netfilter/nft_nat.c b/net/netfilter/nft_nat.c index 583885ce7232..808f5802c270 100644 --- a/net/netfilter/nft_nat.c +++ b/net/netfilter/nft_nat.c @@ -143,6 +143,11 @@ static int nft_nat_validate(const struct nft_ctx *ctx, struct nft_nat *priv = nft_expr_priv(expr); int err; + if (ctx->family != NFPROTO_IPV4 && + ctx->family != NFPROTO_IPV6 && + ctx->family != NFPROTO_INET) + return -EOPNOTSUPP; + err = nft_chain_validate_dependency(ctx->chain, NFT_CHAIN_T_NAT); if (err < 0) return err; diff --git a/net/netfilter/nft_rt.c b/net/netfilter/nft_rt.c index 35a2c28caa60..24d977138572 100644 --- a/net/netfilter/nft_rt.c +++ b/net/netfilter/nft_rt.c @@ -166,6 +166,11 @@ static int nft_rt_validate(const struct nft_ctx *ctx, const struct nft_expr *exp const struct nft_rt *priv = nft_expr_priv(expr); unsigned int hooks; + if (ctx->family != NFPROTO_IPV4 && + ctx->family != NFPROTO_IPV6 && + ctx->family != NFPROTO_INET) + return -EOPNOTSUPP; + switch (priv->key) { case NFT_RT_NEXTHOP4: case NFT_RT_NEXTHOP6: diff --git a/net/netfilter/nft_socket.c b/net/netfilter/nft_socket.c index 9ed85be79452..f30163e2ca62 100644 --- a/net/netfilter/nft_socket.c +++ b/net/netfilter/nft_socket.c @@ -242,6 +242,11 @@ static int nft_socket_validate(const struct nft_ctx *ctx, const struct nft_expr *expr, const struct nft_data **data) { + if (ctx->family != NFPROTO_IPV4 && + ctx->family != NFPROTO_IPV6 && + ctx->family != NFPROTO_INET) + return -EOPNOTSUPP; + return nft_chain_validate_hooks(ctx->chain, (1 << NF_INET_PRE_ROUTING) | (1 << NF_INET_LOCAL_IN) | diff --git a/net/netfilter/nft_synproxy.c b/net/netfilter/nft_synproxy.c index 13da882669a4..1d737f89dfc1 100644 --- a/net/netfilter/nft_synproxy.c +++ b/net/netfilter/nft_synproxy.c @@ -186,7 +186,6 @@ static int nft_synproxy_do_init(const struct nft_ctx *ctx, break; #endif case NFPROTO_INET: - case NFPROTO_BRIDGE: err = nf_synproxy_ipv4_init(snet, ctx->net); if (err) goto nf_ct_failure; @@ -219,7 +218,6 @@ static void nft_synproxy_do_destroy(const struct nft_ctx *ctx) break; #endif case NFPROTO_INET: - case NFPROTO_BRIDGE: nf_synproxy_ipv4_fini(snet, ctx->net); nf_synproxy_ipv6_fini(snet, ctx->net); break; @@ -253,6 +251,11 @@ static int nft_synproxy_validate(const struct nft_ctx *ctx, const struct nft_expr *expr, const struct nft_data **data) { + if (ctx->family != NFPROTO_IPV4 && + ctx->family != NFPROTO_IPV6 && + ctx->family != NFPROTO_INET) + return -EOPNOTSUPP; + return nft_chain_validate_hooks(ctx->chain, (1 << NF_INET_LOCAL_IN) | (1 << NF_INET_FORWARD)); } diff --git a/net/netfilter/nft_tproxy.c b/net/netfilter/nft_tproxy.c index ae15cd693f0e..71412adb73d4 100644 --- a/net/netfilter/nft_tproxy.c +++ b/net/netfilter/nft_tproxy.c @@ -316,6 +316,11 @@ static int nft_tproxy_validate(const struct nft_ctx *ctx, const struct nft_expr *expr, const struct nft_data **data) { + if (ctx->family != NFPROTO_IPV4 && + ctx->family != NFPROTO_IPV6 && + ctx->family != NFPROTO_INET) + return -EOPNOTSUPP; + return nft_chain_validate_hooks(ctx->chain, 1 << NF_INET_PRE_ROUTING); } diff --git a/net/netfilter/nft_xfrm.c b/net/netfilter/nft_xfrm.c index 452f8587adda..1c866757db55 100644 --- a/net/netfilter/nft_xfrm.c +++ b/net/netfilter/nft_xfrm.c @@ -235,6 +235,11 @@ static int nft_xfrm_validate(const struct nft_ctx *ctx, const struct nft_expr *e const struct nft_xfrm *priv = nft_expr_priv(expr); unsigned int hooks; + if (ctx->family != NFPROTO_IPV4 && + ctx->family != NFPROTO_IPV6 && + ctx->family != NFPROTO_INET) + return -EOPNOTSUPP; + switch (priv->dir) { case XFRM_POLICY_IN: hooks = (1 << NF_INET_FORWARD) | -- 2.43.0