Vulnerability Description
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, the DHCP parser in rust/src/dhcp/dhcp.rs creates stateless transactions without recording their packet direction with AppLayerTxData::for_direction(), so a sensor that observes only one direction cannot mark the unseen direction inspected or free completed transactions. The RDP parser in rust/src/rdp/rdp.rs has the same direction-state defect. The per-flow transaction list can grow without bound and cleanup repeatedly scans it, causing increasing CPU and memory consumption and eventual denial of service. This issue is fixed in version 8.0.6.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/OISF/suricata/commit/3f86c56c800392ede5cfaf7a944a431fd8445c55
- https://github.com/OISF/suricata/commit/5af13e3eb06be0387da8703b611c5ce932245c59
- https://github.com/OISF/suricata/commit/bac8a69ca48c14582d39a244a87edad44751ebe1
- https://github.com/OISF/suricata/commit/ef035c7603293a10c5ad087e3d20b05f75236144
- https://github.com/OISF/suricata/pull/15740
- https://github.com/OISF/suricata/releases/tag/suricata-8.0.6
- https://github.com/OISF/suricata/security/advisories/GHSA-m2vc-g65c-ph7m
- https://redmine.openinfosecfoundation.org/issues/8621
FAQ
What is CVE-2026-57224?
CVE-2026-57224 is a vulnerability with a CVSS score of 6.5 (MEDIUM). Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, the DHCP parser in rust/src/dhcp/dhcp.rs creates stateless...
How severe is CVE-2026-57224?
CVE-2026-57224 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-57224?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.