netfilter: nft_socket: fix sk refcount leaks
We must put 'sk' reference before returning.
Fixes: 039b1f4f24ec ("netfilter: nft_socket: fix erroneous socket assignment")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
diff --git a/net/netfilter/nft_socket.c b/net/netfilter/nft_socket.c
index f30163e..765ffd6 100644
--- a/net/netfilter/nft_socket.c
+++ b/net/netfilter/nft_socket.c
@@ -110,13 +110,13 @@ static void nft_socket_eval(const struct nft_expr *expr,
*dest = READ_ONCE(sk->sk_mark);
} else {
regs->verdict.code = NFT_BREAK;
- return;
+ goto out_put_sk;
}
break;
case NFT_SOCKET_WILDCARD:
if (!sk_fullsock(sk)) {
regs->verdict.code = NFT_BREAK;
- return;
+ goto out_put_sk;
}
nft_socket_wildcard(pkt, regs, sk, dest);
break;
@@ -124,7 +124,7 @@ static void nft_socket_eval(const struct nft_expr *expr,
case NFT_SOCKET_CGROUPV2:
if (!nft_sock_get_eval_cgroupv2(dest, sk, pkt, priv->level)) {
regs->verdict.code = NFT_BREAK;
- return;
+ goto out_put_sk;
}
break;
#endif
@@ -133,6 +133,7 @@ static void nft_socket_eval(const struct nft_expr *expr,
regs->verdict.code = NFT_BREAK;
}
+out_put_sk:
if (sk != skb->sk)
sock_gen_put(sk);
}
