diff --git a/services/utils/data_buffer.cpp b/services/utils/data_buffer.cpp
index df809e253b3a75512922b0bbf09fd31d9534fbde..ceec3807a1c852f18d612b66ddad9d7d70c52d5a 100755
--- a/services/utils/data_buffer.cpp
+++ b/services/utils/data_buffer.cpp
@@ -96,9 +96,13 @@ void DataBuffer::Resize(int size)
         if (data_ && size_ > 0) {
             auto ret = memcpy_s(data2, capacity_, data_, size_);
             if (ret != EOK) {
+                delete[] data2;
                 return;
             }
+        }
+        if (data_) {
             delete[] data_;
+            data_ = nullptr;
         }
         data_ = data2;
     } else if (size < capacity_) {