Second attempt - Ensure the private port number wrap check is inside the critical section in prvGetPrivatePortNumber() (UDP).

FreeRTOS-Plus/Source/FreeRTOS-Plus-UDP/FreeRTOS_Sockets.c

@@ -943,11 +943,11 @@ uint16_t usReturn;
 			create first so the early port numbers may still be in use. */
 			usNextPortToUse = socketAUTO_PORT_ALLOCATION_RESET_NUMBER;
 		}
+
+		usReturn = FreeRTOS_htons( usNextPortToUse );
 	}
 	taskEXIT_CRITICAL();
 
-	usReturn = FreeRTOS_htons( usNextPortToUse );
-
 	return usReturn;
 } /* Tested */
 /*-----------------------------------------------------------*/