An array index error, leading to a stack-based buffer overflow, was
found in the Wireshark ENTTEC dissector. If Wireshark read a malformed
packet off a network or opened a malicious dump file, it could crash or,
possibly, execute arbitrary code as the user running Wireshark.
(CVE-2010-4538)
All running instances of Wireshark must be restarted for the update to
take effect.