CVE-2026-45769

Name	CVE-2026-45769
Description	Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5,IKEv2 parser state could grow without bounds while storing client transforms. Repeated crafted UDP traffic may cause Suricata to consume excessive memory, potentially resulting in denial of service. Versions 7.0.16 and 8.0.5 fix the issue. Some workarounds are available. Disable IKE application-layer parsing if it is not needed. Alternatively, use a rule to bypass ike flows after the first packets like `alert ike any any -> any any (sid: 2; flow.pkts_toserver: > 256; bypass; noalert;)`.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
suricata (PTS)	trixie	1:7.0.10-1+deb13u4	vulnerable
	forky, sid	1:8.0.6-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
suricata	source	(unstable)	1:8.0.5-1

Notes

https://github.com/OISF/suricata/security/advisories/GHSA-hg2g-r464-5593
https://redmine.openinfosecfoundation.org/issues/8417 (suricata-7.0.16)
https://redmine.openinfosecfoundation.org/issues/8416 (suricata-8.0.5)
https://github.com/OISF/suricata/commit/97251495e674836693c4636f1eb95fc10b191c15 (suricata-7.0.16)
https://github.com/OISF/suricata/commit/3a6414eb6ae2b2368df51de50e1c1c980109c7a6 (suricata-8.0.5)