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| author | Flavio Leitner <fbl@redhat.com> | 2018-09-27 19:36:28 -0300 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2018-09-28 14:47:41 +0200 |
| commit | 40e4f26e6a14fc1496eabb8b0004a547303114e6 (patch) | |
| tree | d6c9c65b4fdff4d5ff1589806a83a056510865e6 /net | |
| parent | 421c119f558761556afca6a62ad183bc2d8659e0 (diff) | |
| download | linux-40e4f26e6a14fc1496eabb8b0004a547303114e6.tar.gz linux-40e4f26e6a14fc1496eabb8b0004a547303114e6.tar.bz2 linux-40e4f26e6a14fc1496eabb8b0004a547303114e6.zip | |
netfilter: xt_socket: check sk before checking for netns.
Only check for the network namespace if the socket is available.
Fixes: f564650106a6 ("netfilter: check if the socket netns is correct.")
Reported-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Flavio Leitner <fbl@redhat.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/netfilter/xt_socket.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/netfilter/xt_socket.c b/net/netfilter/xt_socket.c index 0472f3472842..ada144e5645b 100644 --- a/net/netfilter/xt_socket.c +++ b/net/netfilter/xt_socket.c @@ -56,7 +56,7 @@ socket_match(const struct sk_buff *skb, struct xt_action_param *par, struct sk_buff *pskb = (struct sk_buff *)skb; struct sock *sk = skb->sk; - if (!net_eq(xt_net(par), sock_net(sk))) + if (sk && !net_eq(xt_net(par), sock_net(sk))) sk = NULL; if (!sk) @@ -117,7 +117,7 @@ socket_mt6_v1_v2_v3(const struct sk_buff *skb, struct xt_action_param *par) struct sk_buff *pskb = (struct sk_buff *)skb; struct sock *sk = skb->sk; - if (!net_eq(xt_net(par), sock_net(sk))) + if (sk && !net_eq(xt_net(par), sock_net(sk))) sk = NULL; if (!sk) |