Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to version 7.0.7, rules using datasets with the non-functional / unimplemented "unset" option can trigger an assertion during traffic parsing, leading to denial of service. This issue is addressed in 7.0.7. As a workaround, use only trusted and well tested rulesets.
https://redmine.openinfosecfoundation.org/issues/7195
https://github.com/OISF/suricata/security/advisories/GHSA-6r8w-fpw6-cp9g