Suricata is a network IDS, IPS and NSM engine. Prior to version 7.0.15, inefficiency in DCERPC buffering can lead to a performance degradation. This issue has been patched in version 7.0.15.
https://redmine.openinfosecfoundation.org/issues/8304
https://github.com/OISF/suricata/security/advisories/GHSA-86vg-w8vm-m3gg