HIGHCVE-2026-22264Published Modified CNA GitHub_M
CVE-2026-22264: Suricata detect/alert: heap-use-after-free on alert queue expansion
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.
Metrics
- CVSS v3.1
- 7.4
- Severity
- HIGH
- Fixed in
- —
- Affected Products
- 1
Affected packages
- OISF / suricata< 7.0.14 · >= 8.0.0, < 8.0.3
CVSS Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:HReferences
- https://github.com/OISF/suricata/security/advisories/GHSA-mqr8-m3m4-2hw5
- https://github.com/OISF/suricata/commit/549d7bf60616de8e54686a188196453b5b22f715
- https://github.com/OISF/suricata/commit/5789a3d3760dbf33d93fc56c27bd9529e5bdc8f2
- https://github.com/OISF/suricata/commit/ac1eb394181530430fb7262969f423a1bf8f209b
- https://redmine.openinfosecfoundation.org/issues/8190