diff --git a/media/libmedia/ICrypto.cpp b/media/libmedia/ICrypto.cpp
index 7bd120e..505d782 100644
--- a/media/libmedia/ICrypto.cpp
+++ b/media/libmedia/ICrypto.cpp
@@ -236,6 +236,7 @@
 
             size_t totalSize = data.readInt32();
             void *srcData = malloc(totalSize);
+            memset(srcData, 0, totalSize);
             data.read(srcData, totalSize);
 
             int32_t numSubSamples = data.readInt32();
@@ -252,6 +253,7 @@
                 secureBufferId = reinterpret_cast<void *>(static_cast<uintptr_t>(data.readInt64()));
             } else {
                 dstPtr = malloc(totalSize);
+                memset(dstPtr, 0, totalSize);
             }
 
             AString errorDetailMsg;