epan/dissectors/packet-hiqnet.c in the HiQnet dissector in Wireshark 2.0.x before 2.0.2 does not validate the data type, which allows remote attackers to cause a denial of service (out-of-bounds read and application crash) via a crafted packet.
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.