diff --git a/services/audiomanager/managersink/src/daudio_sink_manager.cpp b/services/audiomanager/managersink/src/daudio_sink_manager.cpp
index 1e671e06f15c4486abbf22cfeec208788c60c169..f6b8d59377db4c6f01b01fd644d7ce67a84b2041 100644
--- a/services/audiomanager/managersink/src/daudio_sink_manager.cpp
+++ b/services/audiomanager/managersink/src/daudio_sink_manager.cpp
@@ -491,6 +491,10 @@ int32_t DAudioSinkManager::GetDeviceSecurityLevel(const std::string &udid)
     #ifdef DEVICE_SECURITY_LEVEL_ENABLE
     DeviceIdentify devIdentify;
     devIdentify.length = DEVICE_ID_MAX_LEN;
+    if (udid.size() >= DEVICE_ID_MAX_LEN) {
+        DHLOGE("udid size exceeds DEVICE_ID_MAX_LEN");
+        return DEFAULT_DEVICE_SECURITY_LEVEL;
+    }
     int32_t ret = memcpy_s(devIdentify.identity, DEVICE_ID_MAX_LEN, udid.c_str(), DEVICE_ID_MAX_LEN);
     if (ret != DH_SUCCESS) {
         DHLOGE("Str copy failed %{public}d", ret);
diff --git a/services/audiomanager/managersource/src/dmic_dev.cpp b/services/audiomanager/managersource/src/dmic_dev.cpp
index a1cbbfc8c62aa5d330983f0b7882e98f40cb3834..daac1b46213716f3bbf4fa82b90b0aa6c3eb03d0 100644
--- a/services/audiomanager/managersource/src/dmic_dev.cpp
+++ b/services/audiomanager/managersource/src/dmic_dev.cpp
@@ -625,6 +625,10 @@ void DMicDev::FillJitterQueue()
     while (isEnqueueRunning_.load()) {
         {
             std::lock_guard<std::mutex> lock(dataQueueMtx_);
+            if (paramHDF_.period == 0) {
+                DHLOGE("DMicDev paramHDF_.period is zero");
+                break;
+            }
             if (dataQueue_.size() >= (LOW_LATENCY_JITTER_TIME_MS / paramHDF_.period)) {
                 break;
             }
diff --git a/services/audiomanager/test/unittest/sourcedevice/src/dmic_dev_test.cpp b/services/audiomanager/test/unittest/sourcedevice/src/dmic_dev_test.cpp
index a8d44f81ed7c05f307a3b1c1246616128f891edd..399f9095f117f0d4d7dc1efb71ab519f5b43daa9 100644
--- a/services/audiomanager/test/unittest/sourcedevice/src/dmic_dev_test.cpp
+++ b/services/audiomanager/test/unittest/sourcedevice/src/dmic_dev_test.cpp
@@ -339,7 +339,10 @@ HWTEST_F(DMicDevTest, ReadStreamData_001, TestSize.Level1)
     }
     mic_->isEnqueueRunning_ = true;
     mic_->FillJitterQueue();
-
+    mic_->paramHDF_.period = 0;
+    mic_->FillJitterQueue();
+    mic_->paramHDF_.period = 1;
+    mic_->FillJitterQueue();
     std::shared_ptr<AudioData> readData1 = nullptr;
     EXPECT_EQ(DH_SUCCESS, mic_->ReadStreamData(streamId_, readData1));