[PATCH -stable,4.19.x] netfilter: nf_tables: validate family when identifying table via handle

[PATCH -stable,4.19.x] netfilter: nf_tables: validate family when identifying table via handle

[Pablo Neira Ayuso]

[ Upstream commit f6e1532a2697b81da00bfb184e99d15e01e9d98c ]

Validate table family when looking up for it via NFTA_TABLE_HANDLE.

Fixes: 3ecbfd65f50e ("netfilter: nf_tables: allocate handle and delete objects via handle")
Reported-by: Xingyuan Mo <hdthky0@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/netfilter/nf_tables_api.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index 198e4a89df48..2c31470dd61f 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -536,7 +536,7 @@ static struct nft_table *nft_table_lookup(const struct net *net,
 
 static struct nft_table *nft_table_lookup_byhandle(const struct net *net,
 						   const struct nlattr *nla,
-						   u8 genmask)
+						   int family, u8 genmask)
 {
 	struct nftables_pernet *nft_net;
 	struct nft_table *table;
@@ -544,6 +544,7 @@ static struct nft_table *nft_table_lookup_byhandle(const struct net *net,
 	nft_net = net_generic(net, nf_tables_net_id);
 	list_for_each_entry(table, &nft_net->tables, list) {
 		if (be64_to_cpu(nla_get_be64(nla)) == table->handle &&
+		    table->family == family &&
 		    nft_active_genmask(table, genmask))
 			return table;
 	}
@@ -1189,7 +1190,7 @@ static int nf_tables_deltable(struct net *net, struct sock *nlsk,
 
 	if (nla[NFTA_TABLE_HANDLE]) {
 		attr = nla[NFTA_TABLE_HANDLE];
-		table = nft_table_lookup_byhandle(net, attr, genmask);
+		table = nft_table_lookup_byhandle(net, attr, family, genmask);
 	} else {
 		attr = nla[NFTA_TABLE_NAME];
 		table = nft_table_lookup(net, attr, family, genmask);
-- 
2.30.2

[PATCH -stable,5.4.x] netfilter: nf_tables: validate family when identifying table via handle

[Pablo Neira Ayuso]

[ Upstream commit f6e1532a2697b81da00bfb184e99d15e01e9d98c ]

Validate table family when looking up for it via NFTA_TABLE_HANDLE.

Fixes: 3ecbfd65f50e ("netfilter: nf_tables: allocate handle and delete objects via handle")
Reported-by: Xingyuan Mo <hdthky0@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/netfilter/nf_tables_api.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index 8131d858f38d..44d4d97b45d1 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -553,7 +553,7 @@ static struct nft_table *nft_table_lookup(const struct net *net,
 
 static struct nft_table *nft_table_lookup_byhandle(const struct net *net,
 						   const struct nlattr *nla,
-						   u8 genmask)
+						   int family, u8 genmask)
 {
 	struct nftables_pernet *nft_net;
 	struct nft_table *table;
@@ -561,6 +561,7 @@ static struct nft_table *nft_table_lookup_byhandle(const struct net *net,
 	nft_net = net_generic(net, nf_tables_net_id);
 	list_for_each_entry(table, &nft_net->tables, list) {
 		if (be64_to_cpu(nla_get_be64(nla)) == table->handle &&
+		    table->family == family &&
 		    nft_active_genmask(table, genmask))
 			return table;
 	}
@@ -1243,7 +1244,7 @@ static int nf_tables_deltable(struct net *net, struct sock *nlsk,
 
 	if (nla[NFTA_TABLE_HANDLE]) {
 		attr = nla[NFTA_TABLE_HANDLE];
-		table = nft_table_lookup_byhandle(net, attr, genmask);
+		table = nft_table_lookup_byhandle(net, attr, family, genmask);
 	} else {
 		attr = nla[NFTA_TABLE_NAME];
 		table = nft_table_lookup(net, attr, family, genmask);
-- 
2.30.2

[PATCH -stable,5.10.x] netfilter: nf_tables: validate family when identifying table via handle

[Pablo Neira Ayuso]

[ Upstream commit f6e1532a2697b81da00bfb184e99d15e01e9d98c ]

Validate table family when looking up for it via NFTA_TABLE_HANDLE.

Fixes: 3ecbfd65f50e ("netfilter: nf_tables: allocate handle and delete objects via handle")
Reported-by: Xingyuan Mo <hdthky0@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/netfilter/nf_tables_api.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index f3cb5c920276..754278b85706 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -713,7 +713,7 @@ static struct nft_table *nft_table_lookup(const struct net *net,
 
 static struct nft_table *nft_table_lookup_byhandle(const struct net *net,
 						   const struct nlattr *nla,
-						   u8 genmask)
+						   int family, u8 genmask)
 {
 	struct nftables_pernet *nft_net;
 	struct nft_table *table;
@@ -721,6 +721,7 @@ static struct nft_table *nft_table_lookup_byhandle(const struct net *net,
 	nft_net = net_generic(net, nf_tables_net_id);
 	list_for_each_entry(table, &nft_net->tables, list) {
 		if (be64_to_cpu(nla_get_be64(nla)) == table->handle &&
+		    table->family == family &&
 		    nft_active_genmask(table, genmask))
 			return table;
 	}
@@ -1440,7 +1441,7 @@ static int nf_tables_deltable(struct net *net, struct sock *nlsk,
 
 	if (nla[NFTA_TABLE_HANDLE]) {
 		attr = nla[NFTA_TABLE_HANDLE];
-		table = nft_table_lookup_byhandle(net, attr, genmask);
+		table = nft_table_lookup_byhandle(net, attr, family, genmask);
 	} else {
 		attr = nla[NFTA_TABLE_NAME];
 		table = nft_table_lookup(net, attr, family, genmask);
-- 
2.30.2

Re: [PATCH -stable,4.19.x] netfilter: nf_tables: validate family when identifying table via handle

[Sasha Levin]

On Thu, Jun 27, 2024 at 02:41:11AM +0200, Pablo Neira Ayuso wrote:
>[ Upstream commit f6e1532a2697b81da00bfb184e99d15e01e9d98c ]
>
>Validate table family when looking up for it via NFTA_TABLE_HANDLE.
>
>Fixes: 3ecbfd65f50e ("netfilter: nf_tables: allocate handle and delete objects via handle")
>Reported-by: Xingyuan Mo <hdthky0@gmail.com>
>Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
>Signed-off-by: Sasha Levin <sashal@kernel.org>

Queued up, thanks!

-- 
Thanks,
Sasha