diff --git a/level_zero/core/source/cmdlist/cmdlist.h b/level_zero/core/source/cmdlist/cmdlist.h
index 3e21c86b12..22a96d8388 100644
--- a/level_zero/core/source/cmdlist/cmdlist.h
+++ b/level_zero/core/source/cmdlist/cmdlist.h
@@ -391,7 +391,7 @@ struct CommandList : _ze_command_list_handle_t {
 
     ze_command_list_flags_t flags = 0u;
     NEO::PreemptionMode commandListPreemptionMode = NEO::PreemptionMode::Initial;
-    NEO::EngineGroupType engineGroupType;
+    NEO::EngineGroupType engineGroupType = NEO::EngineGroupType::MaxEngineGroups;
     NEO::HeapAddressModel cmdListHeapAddressModel = NEO::HeapAddressModel::PrivateHeaps;
 
     uint32_t cmdListType = CommandListType::TYPE_REGULAR;
diff --git a/level_zero/core/source/cmdqueue/cmdqueue_imp.h b/level_zero/core/source/cmdqueue/cmdqueue_imp.h
index 26d4fa289a..a10e0f5f6c 100644
--- a/level_zero/core/source/cmdqueue/cmdqueue_imp.h
+++ b/level_zero/core/source/cmdqueue/cmdqueue_imp.h
@@ -58,7 +58,7 @@ struct CommandQueueImp : public CommandQueue {
         }
 
       private:
-        NEO::GraphicsAllocation *buffers[BUFFER_ALLOCATION::COUNT];
+        NEO::GraphicsAllocation *buffers[BUFFER_ALLOCATION::COUNT]{};
         std::pair<TaskCountType, NEO::FlushStamp> flushId[BUFFER_ALLOCATION::COUNT];
         BUFFER_ALLOCATION bufferUse = BUFFER_ALLOCATION::FIRST;
     };
diff --git a/level_zero/core/source/event/event.h b/level_zero/core/source/event/event.h
index b69817f377..896d23323f 100644
--- a/level_zero/core/source/event/event.h
+++ b/level_zero/core/source/event/event.h
@@ -373,7 +373,7 @@ struct EventPool : _ze_event_pool_handle_t {
     uint32_t eventPackets = 0;
     uint32_t maxKernelCount = 0;
 
-    ze_event_pool_flags_t eventPoolFlags;
+    ze_event_pool_flags_t eventPoolFlags{};
 
     bool isDeviceEventPoolAllocation = false;
     bool isHostVisibleEventPoolAllocation = false;
diff --git a/level_zero/sysman/source/global_operations/linux/sysman_os_global_operations_imp.cpp b/level_zero/sysman/source/global_operations/linux/sysman_os_global_operations_imp.cpp
index aac7675f23..d837257502 100644
--- a/level_zero/sysman/source/global_operations/linux/sysman_os_global_operations_imp.cpp
+++ b/level_zero/sysman/source/global_operations/linux/sysman_os_global_operations_imp.cpp
@@ -714,7 +714,7 @@ ze_result_t LinuxGlobalOperationsImp::scanProcessesState(std::vector<zes_process
 
     // iterate through all elements of pidClientMap
     for (auto itr = pidClientMap.begin(); itr != pidClientMap.end(); ++itr) {
-        zes_process_state_t process;
+        zes_process_state_t process{};
         process.processId = static_cast<uint32_t>(itr->first);
         process.memSize = itr->second.deviceMemStructField.deviceMemorySize;
         process.sharedSize = itr->second.deviceMemStructField.deviceSharedMemorySize;
diff --git a/level_zero/tools/source/debug/windows/debug_session.h b/level_zero/tools/source/debug/windows/debug_session.h
index e09d5cd73c..12d7a98343 100644
--- a/level_zero/tools/source/debug/windows/debug_session.h
+++ b/level_zero/tools/source/debug/windows/debug_session.h
@@ -117,8 +117,8 @@ struct DebugSessionWindows : DebugSessionImp {
         uint32_t size;
     };
 
-    uint64_t debugAreaVA;
-    NEO::DebugAreaHeader debugArea;
+    uint64_t debugAreaVA{};
+    NEO::DebugAreaHeader debugArea{};
     std::atomic<uint64_t> stateSaveAreaVA{0};
     std::atomic<size_t> stateSaveAreaSize{0};
     bool stateSaveAreaCaptured = false;
diff --git a/level_zero/tools/source/sysman/global_operations/linux/os_global_operations_imp.cpp b/level_zero/tools/source/sysman/global_operations/linux/os_global_operations_imp.cpp
index 36437dc52f..dee4aa76b7 100644
--- a/level_zero/tools/source/sysman/global_operations/linux/os_global_operations_imp.cpp
+++ b/level_zero/tools/source/sysman/global_operations/linux/os_global_operations_imp.cpp
@@ -364,7 +364,7 @@ ze_result_t LinuxGlobalOperationsImp::scanProcessesState(std::vector<zes_process
     for (const auto &clientId : clientIds) {
         // realClientPidPath will be something like: clients/<clientId>/pid
         std::string realClientPidPath = clientsDir + "/" + clientId + "/" + "pid";
-        uint64_t pid;
+        uint64_t pid{};
         result = pSysfsAccess->read(realClientPidPath, pid);
 
         if (ZE_RESULT_SUCCESS != result) {
@@ -471,7 +471,7 @@ ze_result_t LinuxGlobalOperationsImp::scanProcessesState(std::vector<zes_process
 
     // iterate through all elements of pidClientMap
     for (auto itr = pidClientMap.begin(); itr != pidClientMap.end(); ++itr) {
-        zes_process_state_t process;
+        zes_process_state_t process{};
         process.processId = static_cast<uint32_t>(itr->first);
         process.memSize = itr->second.deviceMemStructField.deviceMemorySize;
         process.sharedSize = itr->second.deviceMemStructField.deviceSharedMemorySize;
diff --git a/shared/offline_compiler/source/utilities/linux/safety_guard_linux.h b/shared/offline_compiler/source/utilities/linux/safety_guard_linux.h
index f3c02b6d4f..afc72a6547 100644
--- a/shared/offline_compiler/source/utilities/linux/safety_guard_linux.h
+++ b/shared/offline_compiler/source/utilities/linux/safety_guard_linux.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2018-2021 Intel Corporation
+ * Copyright (C) 2018-2023 Intel Corporation
  *
  * SPDX-License-Identifier: MIT
  *
@@ -19,7 +19,7 @@ static jmp_buf jmpbuf;
 class SafetyGuardLinux {
   public:
     SafetyGuardLinux() {
-        struct sigaction sigact;
+        struct sigaction sigact {};
 
         sigact.sa_sigaction = sigAction;
         sigact.sa_flags = SA_RESTART | SA_SIGINFO;
@@ -72,6 +72,6 @@ class SafetyGuardLinux {
 
     typedef void (*callbackFunction)();
     callbackFunction onSigSegv = nullptr;
-    struct sigaction previousSigSegvAction = {};
-    struct sigaction previousSigIllvAction = {};
+    struct sigaction previousSigSegvAction {};
+    struct sigaction previousSigIllvAction {};
 };
diff --git a/shared/source/compiler_interface/compiler_interface.h b/shared/source/compiler_interface/compiler_interface.h
index c357caca43..5a22e038a2 100644
--- a/shared/source/compiler_interface/compiler_interface.h
+++ b/shared/source/compiler_interface/compiler_interface.h
@@ -154,16 +154,16 @@ class CompilerInterface {
     using fclDevCtxUptr = CIF::RAII::UPtr_t<IGC::FclOclDeviceCtxTagOCL>;
 
     std::unique_ptr<OsLibrary> igcLib;
-    CIF::RAII::UPtr_t<CIF::CIFMain> igcMain = nullptr;
+    CIF::RAII::UPtr_t<CIF::CIFMain> igcMain;
     std::map<const Device *, igcDevCtxUptr> igcDeviceContexts;
     std::string igcRevision;
-    size_t igcLibSize;
-    time_t igcLibMTime;
+    size_t igcLibSize{};
+    time_t igcLibMTime{};
 
     std::unique_ptr<OsLibrary> fclLib;
-    CIF::RAII::UPtr_t<CIF::CIFMain> fclMain = nullptr;
+    CIF::RAII::UPtr_t<CIF::CIFMain> fclMain;
     std::map<const Device *, fclDevCtxUptr> fclDeviceContexts;
-    CIF::RAII::UPtr_t<IGC::FclOclTranslationCtxTagOCL> fclBaseTranslationCtx = nullptr;
+    CIF::RAII::UPtr_t<IGC::FclOclTranslationCtxTagOCL> fclBaseTranslationCtx;
 
     MOCKABLE_VIRTUAL IGC::FclOclDeviceCtxTagOCL *getFclDeviceCtx(const Device &device);
     MOCKABLE_VIRTUAL IGC::IgcOclDeviceCtxTagOCL *getIgcDeviceCtx(const Device &device);
diff --git a/shared/source/device/device.h b/shared/source/device/device.h
index 1b9bda5beb..10b33141b5 100644
--- a/shared/source/device/device.h
+++ b/shared/source/device/device.h
@@ -213,7 +213,7 @@ class Device : public ReferenceTrackedObject<Device> {
     EngineGroupsT regularEngineGroups;
     std::vector<SubDevice *> subdevices;
 
-    PreemptionMode preemptionMode;
+    PreemptionMode preemptionMode = PreemptionMode::Disabled;
     ExecutionEnvironment *executionEnvironment = nullptr;
     aub_stream::EngineType engineInstancedType = aub_stream::EngineType::NUM_ENGINES;
     uint32_t defaultEngineIndex = 0;
diff --git a/shared/source/utilities/software_tags_manager.h b/shared/source/utilities/software_tags_manager.h
index 2cff590c5d..465c8a2818 100644
--- a/shared/source/utilities/software_tags_manager.h
+++ b/shared/source/utilities/software_tags_manager.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2021-2022 Intel Corporation
+ * Copyright (C) 2021-2023 Intel Corporation
  *
  * SPDX-License-Identifier: MIT
  *
@@ -48,7 +48,7 @@ class SWTagsManager {
     void allocateBXMLHeap(Device &device);
     void allocateSWTagHeap(Device &device);
 
-    MemoryManager *memoryManager;
+    MemoryManager *memoryManager{};
     GraphicsAllocation *tagHeap = nullptr;
     GraphicsAllocation *bxmlHeap = nullptr;
     unsigned int currentHeapOffset = 0;