diff --git a/services/state/src/dinput_state.cpp b/services/state/src/dinput_state.cpp
index 023ae13..f17f0a3 100644
--- a/services/state/src/dinput_state.cpp
+++ b/services/state/src/dinput_state.cpp
@@ -168,7 +168,7 @@ void DInputState::CheckKeyboardState(std::string &dhid, std::string &keyboardNod
 {
     DHLOGI("CheckKeyboardState enter,  dhid %s, keyboardNodePath %s.", GetAnonyString(dhid).c_str(),
         keyboardNodePath.c_str());
-    char* canonicalPath = new char(PATH_MAX);
+    char canonicalPath[PATH_MAX] = {0x00};
     if (keyboardNodePath.length() == 0 || keyboardNodePath.length() >= PATH_MAX ||
         realpath(keyboardNodePath.c_str(), canonicalPath) == nullptr) {
         DHLOGE("keyboard Nodepath check fail, error path: %s", keyboardNodePath.c_str());
@@ -208,7 +208,7 @@ void DInputState::CheckMouseKeyState(const int32_t &sessionId, const std::string
 {
     DHLOGI("CheckMouseKeyState enter, mouseNodePath %s, mouseNodeDhId %s, sessionId %d.", mouseNodePath.c_str(),
         GetAnonyString(mouseNodeDhId).c_str(), sessionId);
-    char* canonicalPath = new char(PATH_MAX);
+    char canonicalPath[PATH_MAX] = {0x00};
     if (mouseNodePath.length() == 0 || mouseNodePath.length() > PATH_MAX ||
         realpath(mouseNodePath.c_str(), canonicalPath) == nullptr) {
         DHLOGE("mouse Nodepath check fail, error path: %s", mouseNodePath.c_str());
diff --git a/utils/src/dinput_utils_tool.cpp b/utils/src/dinput_utils_tool.cpp
index edbd4e0..bb6db41 100644
--- a/utils/src/dinput_utils_tool.cpp
+++ b/utils/src/dinput_utils_tool.cpp
@@ -327,8 +327,8 @@ void StringSplitToVector(const std::string& str, const char split, std::vector<s
 int OpenInputDeviceFdByPath(std::string devicePath)
 {
     chmod(devicePath.c_str(), S_IWRITE | S_IREAD);
-    char* canonicalDevicePath = new char(PATH_MAX);
-    if (devicePath.length() == 0 || devicePath.length() > PATH_MAX ||
+    char canonicalDevicePath[PATH_MAX] = {0x00};
+    if (devicePath.length() == 0 || devicePath.length() >= PATH_MAX ||
         realpath(devicePath.c_str(), canonicalDevicePath) == nullptr) {
         DHLOGE("path check fail, error path: %s", devicePath.c_str());
         return -1;