CVE-2026-22264

Name	CVE-2026-22264
Description	Suricata is a network IDS, IPS and NSM engine. Prior to version 8.0.3 and 7.0.14, an unsigned integer overflow can lead to a heap use-after-free condition when generating excessive amounts of alerts for a single packet. Versions 8.0.3 and 7.0.14 contain a patch. As a workaround, do not run untrusted rulesets or run with less than 65536 signatures that can match on the same packet.
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-mqr8-m3m4-2hw5
https://github.com/OISF/suricata/commit/549d7bf60616de8e54686a188196453b5b22f715 (suricata-8.0.3)
https://github.com/OISF/suricata/commit/5789a3d3760dbf33d93fc56c27bd9529e5bdc8f2 (suricata-7.0.14)