An issue was discovered in the IPv6 stack in Contiki through 3.0. There is an insufficient check for the IPv6 header length. This leads to Denial-of-Service and potential Remote Code Execution via a crafted ICMPv6 echo packet.Referenceshttps://www.kb.cert.org/vuls/id/815128https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01
