Windows phone camera crashes due to invalid sample stream buffer

Camera video render crashes randomly due to invalid sample stream buffer. Camera Media stream ProcessSample call back queues camera sample frame buffer. QWinRTCameraVideoRendererControl::render picks up sample frame buffer from QVector queue and blit it to the target texture for image preview. Randomly sample buffer is invalid while picking up from QVector
It can be reproduced on Lumia 1520 and Lumia 630 devices.