CVE-2026-57224
Publication date 18 September 2026
Last updated 23 September 2026
Ubuntu priority
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| suricata | 26.04 LTS resolute |
Needs evaluation
|
| 24.04 LTS noble |
Needs evaluation
|
|
| 22.04 LTS jammy |
Needs evaluation
|
|
| 18.04 LTS bionic |
Needs evaluation
|
|
| 16.04 LTS xenial |
Needs evaluation
|
Severity score breakdown
CVSS version: CVSS v3.0
Base score
6.5 · Medium
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
Other references
- https://www.cve.org/CVERecord?id=CVE-2026-57224
- https://github.com/OISF/suricata/security/advisories/GHSA-m2vc-g65c-ph7m
- https://redmine.openinfosecfoundation.org/issues/8622 (suricata-8.0.6)
- https://github.com/OISF/suricata/commit/f234d155bcf43df403ee0823b60de8d02e2b99b2 (suricata-8.0.6)
- https://github.com/OISF/suricata/commit/bac8a69ca48c14582d39a244a87edad44751ebe1 (suricata-8.0.6)
- https://github.com/OISF/suricata/commit/ef035c7603293a10c5ad087e3d20b05f75236144 (suricata-8.0.6)