FT RRB: Validate os_malloc() return value before using it

Signed-hostap: Jouni Malinen <j@w1.fi>

src/ap/wpa_auth_ft.c

@@ -1166,6 +1166,8 @@ int wpa_ft_action_rx(struct wpa_state_machine *sm, const u8 *data, size_t len)
 
 	/* RRB - Forward action frame to the target AP */
 	frame = os_malloc(sizeof(*frame) + len);
+	if (frame == NULL)
+		return -1;
 	frame->frame_type = RSN_REMOTE_FRAME_TYPE_FT_RRB;
 	frame->packet_type = FT_PACKET_REQUEST;
 	frame->action_length = host_to_le16(len);
@@ -1216,6 +1218,8 @@ static int wpa_ft_rrb_rx_request(struct wpa_authenticator *wpa_auth,
 	rlen = 2 + 2 * ETH_ALEN + 2 + resp_ies_len;
 
 	frame = os_malloc(sizeof(*frame) + rlen);
+	if (frame == NULL)
+		return -1;
 	frame->frame_type = RSN_REMOTE_FRAME_TYPE_FT_RRB;
 	frame->packet_type = FT_PACKET_RESPONSE;
 	frame->action_length = host_to_le16(rlen);