CVE-2026-22259

Name	CVE-2026-22259
Description	Suricata is a network IDS, IPS and NSM engine. Prior to versions 8.0.3 and 7.0.14, specially crafted traffic can cause Suricata to consume large amounts of memory while parsing DNP3 traffic. This can lead to the process slowing down and running out of memory, potentially leading to it getting killed by the OOM killer. Versions 8.0.3 or 7.0.14 contain a patch. As a workaround, disable the DNP3 parser in the suricata yaml (disabled by default).
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)	bullseye	1:6.0.1-3	vulnerable
	bullseye (security)	1:6.0.1-3+deb11u1	vulnerable
	bookworm	1:6.0.10-1	vulnerable
	trixie	1:7.0.10-1+deb13u2	vulnerable
	forky, sid	1:8.0.3-1	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)	1:8.0.3-1

Notes

https://github.com/OISF/suricata/security/advisories/GHSA-878h-2x6v-84q9
https://github.com/OISF/suricata/commit/50cac2e2465ca211eabfa156623e585e9037bb7e (suricata-8.0.3)
https://github.com/OISF/suricata/commit/63225d5f8ef64cc65164c0bb1800730842d54942 (suricata-7.0.14)