Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Suricata can run out of memory when parsing crafted HTTP/2 traffic. Upgrade to 6.0.20 or 7.0.6.
https://redmine.openinfosecfoundation.org/issues/7112
https://redmine.openinfosecfoundation.org/issues/7105
https://redmine.openinfosecfoundation.org/issues/7104
https://github.com/OISF/suricata/security/advisories/GHSA-cg8j-7mwm-v563
https://github.com/OISF/suricata/commit/c82fa5ca0d1ce0bd8f936e0b860707a6571373b2
https://github.com/OISF/suricata/commit/62d5cac1b8483d5f9d2b79833a4e59f5d80129b7