net: guard tcp_set_keepalive() to tcp sockets
Its possible to use RAW sockets to get a crash in
tcp_set_keepalive() / sk_reset_timer()
Fix is to make sure socket is a SOCK_STREAM one.
Reported-by: Dave Jones <davej@redhat.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/core/sock.c b/net/core/sock.c
index 3057920..a6000fb 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -691,7 +691,8 @@
case SO_KEEPALIVE:
#ifdef CONFIG_INET
- if (sk->sk_protocol == IPPROTO_TCP)
+ if (sk->sk_protocol == IPPROTO_TCP &&
+ sk->sk_type == SOCK_STREAM)
tcp_set_keepalive(sk, valbool);
#endif
sock_valbool_flag(sk, SOCK_KEEPOPEN, valbool);