diff --git a/core/jni/android_database_CursorWindow.cpp b/core/jni/android_database_CursorWindow.cpp
index bb09d00..7213414 100644
--- a/core/jni/android_database_CursorWindow.cpp
+++ b/core/jni/android_database_CursorWindow.cpp
@@ -280,7 +280,7 @@
         if (size) {
             jchar* data = static_cast<jchar*>(env->GetPrimitiveArrayCritical(dataObj, NULL));
             utf8_to_utf16_no_null_terminator(reinterpret_cast<const uint8_t*>(str), len,
-                    reinterpret_cast<char16_t*>(data));
+                    reinterpret_cast<char16_t*>(data), (size_t) size);
             env->ReleasePrimitiveArrayCritical(dataObj, data, 0);
         }
         env->SetIntField(bufferObj, gCharArrayBufferClassInfo.sizeCopied, size);
diff --git a/libs/androidfw/ResourceTypes.cpp b/libs/androidfw/ResourceTypes.cpp
index bf2648a..b423f6c 100644
--- a/libs/androidfw/ResourceTypes.cpp
+++ b/libs/androidfw/ResourceTypes.cpp
@@ -776,7 +776,7 @@
                     if (kDebugStringPoolNoisy) {
                         ALOGI("Caching UTF8 string: %s", u8str);
                     }
-                    utf8_to_utf16(u8str, u8len, u16str);
+                    utf8_to_utf16(u8str, u8len, u16str, *u16len + 1);
                     mCache[idx] = u16str;
                     return u16str;
                 } else {
@@ -883,7 +883,8 @@
             // the ordering, we need to convert strings in the pool to UTF-16.
             // But we don't want to hit the cache, so instead we will have a
             // local temporary allocation for the conversions.
-            char16_t* convBuffer = (char16_t*)malloc(strLen+4);
+            size_t convBufferLen = strLen + 4;
+            char16_t* convBuffer = (char16_t*)calloc(convBufferLen, sizeof(char16_t));
             ssize_t l = 0;
             ssize_t h = mHeader->stringCount-1;
 
@@ -893,8 +894,7 @@
                 const uint8_t* s = (const uint8_t*)string8At(mid, &len);
                 int c;
                 if (s != NULL) {
-                    char16_t* end = utf8_to_utf16_n(s, len, convBuffer, strLen+3);
-                    *end = 0;
+                    char16_t* end = utf8_to_utf16(s, len, convBuffer, convBufferLen);
                     c = strzcmp16(convBuffer, end-convBuffer, str, strLen);
                 } else {
                     c = -1;
diff --git a/tools/aapt2/util/Util.cpp b/tools/aapt2/util/Util.cpp
index 3c0e9bde..e743247 100644
--- a/tools/aapt2/util/Util.cpp
+++ b/tools/aapt2/util/Util.cpp
@@ -434,7 +434,11 @@
 
     std::u16string utf16;
     utf16.resize(utf16Length);
-    utf8_to_utf16(reinterpret_cast<const uint8_t*>(utf8.data()), utf8.length(), &*utf16.begin());
+    utf8_to_utf16(
+            reinterpret_cast<const uint8_t*>(utf8.data()),
+            utf8.length(),
+            &*utf16.begin(),
+            (size_t) utf16Length + 1);
     return utf16;
 }