tcpdump up to 4.9.1 HNCP Parser print-hncp.c dhcpv6_print() memory corruption

A vulnerability was found in tcpdump up to 4.9.1 (Packet Analyzer Software). It has been declared as critical. Affected by this vulnerability is the function dhcpv6_print() of the file print-hncp.c of the component HNCP Parser. Upgrading to version 4.9.2 eliminates this vulnerability. A possible mitigation has been published 1 days after the disclosure of the vulnerability.