Detections
Analytics
CVE-2026-57224
medium
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.
References
https://redmine.openinfosecfoundation.org/issues/8621
https://github.com/OISF/suricata/security/advisories/GHSA-m2vc-g65c-ph7m
https://github.com/OISF/suricata/releases/tag/suricata-8.0.6
https://github.com/OISF/suricata/pull/15740
https://github.com/OISF/suricata/commit/ef035c7603293a10c5ad087e3d20b05f75236144
https://github.com/OISF/suricata/commit/bac8a69ca48c14582d39a244a87edad44751ebe1
https://github.com/OISF/suricata/commit/5af13e3eb06be0387da8703b611c5ce932245c59
https://github.com/OISF/suricata/commit/3f86c56c800392ede5cfaf7a944a431fd8445c55