CVE-2026-57222
Suricata ippair: hash collision can cause incorrect state reuse across IPv4 and IPv6
- State
- Published
- Severity
- 5.3 Medium
- Published
- Sep 18, 2026
- Updated
- Sep 21, 2026
- Reserved
- Jun 24, 2026
Description
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.17 and 8.0.6, crafted IPv4 and IPv6 address pairs can collide in the IPPair hash because src/ippair.c did not compare the IP address family before reusing IPPair-backed state. This can apply state from one IP family to another for xbits track ip_pair, FTP data expectations, and, on the 7.0 release line, thresholding, detection_filter, and rate_filter rules using track by_both, causing incorrect detection state. This issue is fixed in versions 8.0.6 and 7.0.17.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.3 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N | GitHub_M |
Weaknesses
- CWE-697 Incorrect Comparison
Affected Products
| Product | Versions |
|---|---|
suricataOISF |
|
References
- https://github.com/OISF/suricata/security/advisories/GHSA-2r8x-23fw-hgcg
- https://github.com/OISF/suricata/commit/4a728464e6eb9e273bb02e3df0c28929b28db71d
- https://github.com/OISF/suricata/commit/9d788575c5d22a34eeed50d56557ed12b05e0aec
- https://github.com/OISF/suricata/commit/c92e270c4a795c52bce610aa1ce9ebaf065c49e6
- https://github.com/OISF/suricata/releases/tag/suricata-7.0.17
- https://github.com/OISF/suricata/releases/tag/suricata-8.0.6
- https://redmine.openinfosecfoundation.org/issues/8559
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.