CVE-2026-22264
HIGH severity · CVSS 7.4 · Use-after-free
7.4CVSS HIGH
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityHigh
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://github.com/OISF/suricata/commit/549d7bf60616de8e54686a188196453b5b22f715 ↗
Additional information
- NVD record
- https://github.com/OISF/suricata/commit/549d7bf60616de8e54686a188196453b5b22f715Patch
- https://github.com/OISF/suricata/commit/5789a3d3760dbf33d93fc56c27bd9529e5bdc8f2Patch
- https://github.com/OISF/suricata/commit/ac1eb394181530430fb7262969f423a1bf8f209bPatch
- https://github.com/OISF/suricata/security/advisories/GHSA-mqr8-m3m4-2hw5Advisory
- https://redmine.openinfosecfoundation.org/issues/8190