frang: fix possible null pointer dereference if request was generated…

… by tempesta
tempesta-tech · May 25, 2019 · 97abe3b · 97abe3b
1 parent 0b1be60
commit 97abe3b
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/tempesta_fw/http_limits.c b/tempesta_fw/http_limits.c
@@ -1124,7 +1124,11 @@ frang_resp_fwd_process(TfwHttpResp *resp)
 				       : req->vhost->loc_dflt->frang_cfg;
 	FrangHttpRespCodeBlock *conf = fcfg->http_resp_code_block;
 
-	if (!conf)
+	/*
+	 * Request may be originated form Health Monitor, thus it there may be
+	 * no client connection.
+	 */
+	if (!req->conn || !conf)
 		return TFW_PASS;
 
 	ra = (FrangAcc *)req->conn->sk->sk_security;