diff --git a/frameworks/js/napi/audiocapturer/napi_audio_capturer.cpp b/frameworks/js/napi/audiocapturer/napi_audio_capturer.cpp
index 41a7c73cc724d3df88d11b5bc564081f45209918..55806c40e50aa4b5f7d26de1a9191e4b515f0ee8 100644
--- a/frameworks/js/napi/audiocapturer/napi_audio_capturer.cpp
+++ b/frameworks/js/napi/audiocapturer/napi_audio_capturer.cpp
@@ -496,7 +496,8 @@ napi_value NapiAudioCapturer::GetAudioTime(napi_env env, napi_callback_info info
         Timestamp timestamp;
         if (napiAudioCapturer->audioCapturer_->GetAudioTime(timestamp, Timestamp::Timestampbase::MONOTONIC)) {
             const uint64_t secToNanosecond = 1000000000;
-            context->time = timestamp.time.tv_nsec + timestamp.time.tv_sec * secToNanosecond;
+            context->time = static_cast<uint64_t>(timestamp.time.tv_nsec) +
+                static_cast<uint64_t>(timestamp.time.tv_sec) * secToNanosecond;
         } else {
             context->SignError(NAPI_ERR_SYSTEM);
         }
diff --git a/frameworks/native/audioutils/src/audio_speed.cpp b/frameworks/native/audioutils/src/audio_speed.cpp
index 7c1c7e5b3108b915c9598129443b2f633c8c6112..df886b4dafb3cfaa705a053ed7caa4584b17528d 100644
--- a/frameworks/native/audioutils/src/audio_speed.cpp
+++ b/frameworks/native/audioutils/src/audio_speed.cpp
@@ -136,9 +136,18 @@ int32_t AudioSpeed::ChangeSpeedFor24Bit(uint8_t *buffer, int32_t bufferSize,
         return ERR_MEMORY_ALLOC_FAILED;
     }
     float* bitTofloat = new(std::nothrow) float[bufferSize];
+    if (!bitTofloat) {
+        AUDIO_ERR_LOG("bitTofloat nullptr, No memory");
+        return ERR_MEMORY_ALLOC_FAILED;
+    }
     ConvertFrom24BitToFloat(bufferSize / formatSize_, buffer, bitTofloat);
 
     float* speedBuf = new(std::nothrow) float[MAX_BUFFER_SIZE];
+    if (!speedBuf) {
+        AUDIO_ERR_LOG("speedBuf nullptr, No memory");
+        delete [] bitTofloat;
+        return ERR_MEMORY_ALLOC_FAILED;
+    }
     int32_t ret = ChangeSpeedForFloat(bitTofloat, bufferSize, speedBuf, outBufferSize);
 
     ConvertFromFloatTo24Bit(outBufferSize / formatSize_, speedBuf, outBuffer.get());
@@ -157,9 +166,18 @@ int32_t AudioSpeed::ChangeSpeedFor32Bit(uint8_t *buffer, int32_t bufferSize,
         return ERR_MEMORY_ALLOC_FAILED;
     }
     float* bitTofloat = new(std::nothrow) float[bufferSize];
+    if (!bitTofloat) {
+        AUDIO_ERR_LOG("bitTofloat nullptr, No memory");
+        return ERR_MEMORY_ALLOC_FAILED;
+    }
     ConvertFrom32BitToFloat(bufferSize / formatSize_, reinterpret_cast<int32_t *>(buffer), bitTofloat);
 
     float* speedBuf = new(std::nothrow) float[MAX_BUFFER_SIZE];
+    if (!speedBuf) {
+        AUDIO_ERR_LOG("speedBuf nullptr, No memory");
+        delete [] bitTofloat;
+        return ERR_MEMORY_ALLOC_FAILED;
+    }
     int32_t ret = ChangeSpeedForFloat(bitTofloat, bufferSize, speedBuf, outBufferSize);
 
     ConvertFromFloatTo32Bit(outBufferSize / formatSize_, speedBuf, reinterpret_cast<int32_t *>(outBuffer.get()));
diff --git a/frameworks/native/hdiadapter/sink/primary/audio_renderer_sink.cpp b/frameworks/native/hdiadapter/sink/primary/audio_renderer_sink.cpp
index 443a5ffb9fceb4c7c6465faca87706f1d3784eeb..6ca630a340244830c4e16cfdd48a7617e0133dc4 100644
--- a/frameworks/native/hdiadapter/sink/primary/audio_renderer_sink.cpp
+++ b/frameworks/native/hdiadapter/sink/primary/audio_renderer_sink.cpp
@@ -320,7 +320,7 @@ bool AudioRendererSinkInner::AttributesCheck(AudioSampleAttributes &attrInfo)
 int32_t AudioRendererSinkInner::SetAudioAttrInfo(AudioSampleAttributes &attrInfo)
 {
     CHECK_AND_RETURN_RET_LOG(AttributesCheck(attrInfo), ERROR, "AttributesCheck failed");
-    int32_t bufferSize = attrInfo.sampleRate * attrInfo.format * attrInfo.channelCount *
+    uint32_t bufferSize = attrInfo.sampleRate * attrInfo.format * attrInfo.channelCount *
         BUFFER_CALC_20MS / BUFFER_CALC_1000MS;
     audioAttrInfo_ = "rate="+to_string(attrInfo.sampleRate)+" format=" + ParseAudioFormatToStr(attrInfo.format) +
         " channels=" + to_string(attrInfo.channelCount) + " buffer_size="+to_string(bufferSize);
diff --git a/frameworks/native/pulseaudio/modules/abstract/module_loopback.c b/frameworks/native/pulseaudio/modules/abstract/module_loopback.c
index fad3a22d5d0a349fcf65ef3ff13d4a68c09cc089..d0b015c0222f7d4fc93335e738eda8cbda4d22c1 100644
--- a/frameworks/native/pulseaudio/modules/abstract/module_loopback.c
+++ b/frameworks/native/pulseaudio/modules/abstract/module_loopback.c
@@ -944,8 +944,8 @@ static int SinkInputProcessMsgCb(pa_msgobject *obj, int code, void *data, int64_
             u->latency_snapshot.recv_counter = u->output_thread_info.recv_counter;
             u->latency_snapshot.loopback_memblockq_length = pa_memblockq_get_length(u->memblockq);
             /* Add content of render memblockq to sink latency */
-            u->latency_snapshot.sink_latency = pa_sink_get_latency_within_thread(u->sink_input->sink, true) +
-                pa_bytes_to_usec(length, &u->sink_input->sink->sample_spec);
+            u->latency_snapshot.sink_latency = (int64_t)(pa_sink_get_latency_within_thread(u->sink_input->sink, true) +
+                pa_bytes_to_usec(length, &u->sink_input->sink->sample_spec));
             u->latency_snapshot.sink_timestamp = pa_rtclock_now();
             return 0;
         }
diff --git a/services/audio_policy/server/src/service/manager/volume_data_maintainer.cpp b/services/audio_policy/server/src/service/manager/volume_data_maintainer.cpp
index 6f371b0af46b475f73f24a719a721f9dd34fba5b..a1ab361abee50ab1437a27b9a995d97b1e149392 100644
--- a/services/audio_policy/server/src/service/manager/volume_data_maintainer.cpp
+++ b/services/audio_policy/server/src/service/manager/volume_data_maintainer.cpp
@@ -324,7 +324,7 @@ bool VolumeDataMaintainer::SetMuteAffectedToMuteStatusDataBase(int32_t affected)
 {
     // transfer mute_streams_affected to mutestatus
     for (auto &streamtype : VOLUME_MUTE_STREAM_TYPE) {
-        if (affected & (1 << streamtype)) {
+        if (static_cast<uint32_t>(affected) & (1 << streamtype)) {
             for (auto &device : DEVICE_TYPE_LIST) {
                 // save mute status to database
                 SaveMuteStatusInternal(device, AUDIO_STREAMTYPE_MAP[streamtype], true);
diff --git a/services/audio_service/server/src/audio_effect_server.cpp b/services/audio_service/server/src/audio_effect_server.cpp
index 65be1fac7d74190c7e332c91ea4b751a391fa6aa..bbdd4626ac07d8b2b5fddc18d1042cffc1fba28a 100644
--- a/services/audio_service/server/src/audio_effect_server.cpp
+++ b/services/audio_service/server/src/audio_effect_server.cpp
@@ -56,6 +56,13 @@ static bool LoadLibrary(const std::string &relativePath, std::shared_ptr<AudioEf
         return false;
     }
 
+    char path[PATH_MAX + 1] = {0x00};
+    char* resultpath = realpath(relativePath.c_str(), path);
+    if ((strlen(relativePath.c_str()) > PATH_MAX) || !resultpath) {
+        AUDIO_ERR_LOG("<log error> realpath lib %{public}s Fail", relativePath.c_str());
+        return false;
+    }
+
     void* handle = dlopen(absolutePath.c_str(), 1);
     if (!handle) {
         AUDIO_ERR_LOG("<log error> dlopen lib %{public}s Fail", relativePath.c_str());