Fix integer overflow in mediadrmserver
bug:37710346
Change-Id: If18cfb5bb1d1f1b2997d2a0e1685590d674181f4
(cherry picked from commit eb21712f81aa9f6d5b055113595220ee1506f35c)
diff --git a/drm/mediadrm/plugins/clearkey/InitDataParser.cpp b/drm/mediadrm/plugins/clearkey/InitDataParser.cpp
index 0216b8d..6a4f8d5 100644
--- a/drm/mediadrm/plugins/clearkey/InitDataParser.cpp
+++ b/drm/mediadrm/plugins/clearkey/InitDataParser.cpp
@@ -114,7 +114,7 @@
memcpy(&keyIdCount, &initData[readPosition], sizeof(keyIdCount));
keyIdCount = ntohl(keyIdCount);
readPosition += sizeof(keyIdCount);
- if (readPosition + (keyIdCount * kKeyIdSize) !=
+ if (readPosition + ((uint64_t)keyIdCount * kKeyIdSize) !=
initData.size() - sizeof(uint32_t)) {
return android::ERROR_DRM_CANNOT_HANDLE;
}