diff --git a/mindspore/ccsrc/debug/debug_services.cc b/mindspore/ccsrc/debug/debug_services.cc
index b955c1057d8..5ed077f4ff1 100644
--- a/mindspore/ccsrc/debug/debug_services.cc
+++ b/mindspore/ccsrc/debug/debug_services.cc
@@ -1126,6 +1126,10 @@ bool DebugServices::CheckOpOverflow(std::string node_name_to_find, unsigned int
             const size_t buf_size = 256;
             buffer.resize(buf_size);
             (void)infile.read(buffer.data(), buf_size);
+            if (infile.gcount() != buf_size) {
+              MS_LOG(ERROR) << "The file: " << file_path << "may be damaged!";
+              continue;
+            }
             const uint8_t stream_id_offset = 16;
             const uint8_t task_id_offset = 24;
             // The stream_id and task_id in the dump file are 8 byte fields for extensibility purpose, but only hold 4
diff --git a/mindspore/ccsrc/debug/debugger/debugger.cc b/mindspore/ccsrc/debug/debugger/debugger.cc
index d28548c5ab0..31315e603bb 100644
--- a/mindspore/ccsrc/debug/debugger/debugger.cc
+++ b/mindspore/ccsrc/debug/debugger/debugger.cc
@@ -866,7 +866,7 @@ std::list<TensorProto> Debugger::LoadTensors(const ProtoVector<TensorProto> &ten
   // items in ret_name will be in the same order with tensors if found
   debug_services_->ReadNodesTensors(name, &ret_name, &data_ptr, &data_size, &dtype, &shape);
   std::list<TensorProto> tensor_list;
-  unsigned int result_index = 0;
+  size_t result_index = 0;
 
   for (auto tensor : tensors) {
     ssize_t size_iter = 0;
@@ -897,6 +897,9 @@ std::list<TensorProto> Debugger::LoadTensors(const ProtoVector<TensorProto> &ten
       }
       // add tensor to result list and increment result_index to check next item in ret_name
       tensor_list.push_back(tensor_item);
+      if (size_iter > INT_MAX - g_chunk_size) {
+        MS_EXCEPTION(ValueError) << size_iter << " + " << g_chunk_size << " would lead to integer overflow！";
+      }
       size_iter += g_chunk_size;
     }
     result_index++;
diff --git a/mindspore/ccsrc/debug/debugger/grpc_client.cc b/mindspore/ccsrc/debug/debugger/grpc_client.cc
index ec37e2ecadf..9f1607bc5e5 100644
--- a/mindspore/ccsrc/debug/debugger/grpc_client.cc
+++ b/mindspore/ccsrc/debug/debugger/grpc_client.cc
@@ -83,6 +83,9 @@ std::vector<std::string> GrpcClient::ChunkString(std::string str, int graph_size
       MS_LOG(EXCEPTION) << "memcpy_s failed. errorno is: " << err;
     }
     buf.push_back(buffer);
+    if (size_iter > INT_MAX - l_chunk_size) {
+      MS_EXCEPTION(ValueError) << size_iter << " + " << l_chunk_size << "would lead to integer overflow!";
+    }
     size_iter += l_chunk_size;
   }
   return buf;