CVEvulnerability
CVE-2026-57224
6.5 MEDIUM
Official page ↗
- Status
- Analyzed
- Published
- 2026-09-18
- Last modified
- 2026-09-28
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 6.5 MEDIUM — CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-400, CWE-770
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.
Affected configurations
• oisf suricata (>= 8.0.0 < 8.0.6)
Related
References
- https://github.com/OISF/suricata/commit/3f86c56c800392ede5cfaf7a944a431fd8445c55 Patch
- https://github.com/OISF/suricata/commit/5af13e3eb06be0387da8703b611c5ce932245c59 Patch
- https://github.com/OISF/suricata/commit/bac8a69ca48c14582d39a244a87edad44751ebe1 Patch
- https://github.com/OISF/suricata/commit/ef035c7603293a10c5ad087e3d20b05f75236144 Patch
- https://github.com/OISF/suricata/pull/15740 Patch
- https://github.com/OISF/suricata/releases/tag/suricata-8.0.6 Release Notes
- https://github.com/OISF/suricata/security/advisories/GHSA-m2vc-g65c-ph7m Mitigation, Vendor Advisory
- https://redmine.openinfosecfoundation.org/issues/8621 Permissions Required