sp<ABuffer> NuPlayer::GenericSource::mediaBufferToABuffer(
 MediaBuffer* mb,
        media_track_type trackType,
 int64_t *actualTimeUs) {
 bool audio = trackType == MEDIA_TRACK_TYPE_AUDIO;
 size_t outLength = mb->range_length();

 if (audio && mAudioIsVorbis) {
        outLength += sizeof(int32_t);
 }

    sp<ABuffer> ab;
 if (mIsWidevine && !audio) {
        ab = new ABuffer(NULL, mb->range_length());
        mb->add_ref();
        ab->setMediaBufferBase(mb);
 } else {
        ab = new ABuffer(outLength);
        memcpy(ab->data(),
 (const uint8_t *)mb->data() + mb->range_offset(),
               mb->range_length());
 }

 if (audio && mAudioIsVorbis) {
 int32_t numPageSamples;
 if (!mb->meta_data()->findInt32(kKeyValidSamples, &numPageSamples)) {
            numPageSamples = -1;
 }

 uint8_t* abEnd = ab->data() + mb->range_length();
        memcpy(abEnd, &numPageSamples, sizeof(numPageSamples));
 }

    sp<AMessage> meta = ab->meta();

 int64_t timeUs;
    CHECK(mb->meta_data()->findInt64(kKeyTime, &timeUs));
    meta->setInt64("timeUs", timeUs);

 if (trackType == MEDIA_TRACK_TYPE_TIMEDTEXT) {
 const char *mime;
        CHECK(mTimedTextTrack.mSource != NULL
 && mTimedTextTrack.mSource->getFormat()->findCString(kKeyMIMEType, &mime));
        meta->setString("mime", mime);
 }

 int64_t durationUs;
 if (mb->meta_data()->findInt64(kKeyDuration, &durationUs)) {
        meta->setInt64("durationUs", durationUs);
 }

 if (trackType == MEDIA_TRACK_TYPE_SUBTITLE) {
        meta->setInt32("trackIndex", mSubtitleTrack.mIndex);
 }

 if (actualTimeUs) {
 *actualTimeUs = timeUs;
 }

    mb->release();
    mb = NULL;

 return ab;
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.