--- source4/libcli/ldap/ldap_client.c	2020-07-09 09:33:56 UTC
+++ source4/libcli/ldap/ldap_client.c	
@@ -336,7 +336,7 @@ 
 	uint16_t *pport)	/* Not set for ldapi */
 {
 	enum ldap_proto proto = LDAP_PROTO_NONE;
-	char *host = NULL;
+	char host[1025];
 	int ret, port;
 
 	if (url == NULL) {
@@ -403,13 +403,12 @@ 
 		return 0;
 	}
 
-	ret = sscanf(url, "%m[^:/]:%d", &host, &port);
+	ret = sscanf(url, "%254[^:/]:%d", host, &port);
 	if (ret < 1) {
 		return EINVAL;
 	}
 
 	*pdest = talloc_strdup(mem_ctx, host);
-	SAFE_FREE(host);
 	if (*pdest == NULL) {
 		return ENOMEM;
 	}