static int asf_read_replicated_data(AVFormatContext *s, ASFPacket *asf_pkt)
{
    ASFContext *asf = s->priv_data;
    AVIOContext *pb = s->pb;
    int ret, data_size;

    if (!asf_pkt->data_size) {
        data_size = avio_rl32(pb); // read media object size
        if (data_size <= 0)
            return AVERROR_INVALIDDATA;
        if ((ret = av_new_packet(&asf_pkt->avpkt, data_size)) < 0)
            return ret;
        asf_pkt->data_size = asf_pkt->size_left = data_size;
    } else
        avio_skip(pb, 4); // reading of media object size is already done
    asf_pkt->dts = avio_rl32(pb); // read presentation time
    if (asf->rep_data_len && (asf->rep_data_len >= 8))
        avio_skip(pb, asf->rep_data_len - 8); // skip replicated data

    return 0;
}

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.