Stack-based buffer overflow in the build_expert_data function in epan/dissectors/packet-ncp2222.inc in the NCP dissector in Wireshark 1.10.x before 1.10.11 and 1.12.x before 1.12.2 allows remote attackers to cause a denial of service (application crash) via a crafted packet.
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.