CVE-2026-57224Suricata dhcp: unbounded transactions in unidirectional traffic can lead to resource exhaustion
Updated under an hour ago ()
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It affects OISF suricata. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-400, CWE-770
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Analyzed
- Record last updated
- Sep 18, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
OISF suricata oisf:suricata (from the name) | from 8.0.0, < 8.0.6 | CNA record |
oisf suricata oisf:suricata | from 8.0.0 before 8.0.6 | NVD |
References
- https://github.com/OISF/suricata/security/advisories/GHSA-m2vc-g65c-ph7mx-refsource-confirm, mitigation, vendor-advisory
- https://github.com/OISF/suricata/pull/15740x-refsource-misc, patch
- https://github.com/OISF/suricata/commit/3f86c56c800392ede5cfaf7a944a431fd8445c55x-refsource-misc, patch
- https://github.com/OISF/suricata/commit/5af13e3eb06be0387da8703b611c5ce932245c59x-refsource-misc, patch
- https://github.com/OISF/suricata/commit/bac8a69ca48c14582d39a244a87edad44751ebe1x-refsource-misc, patch
- https://github.com/OISF/suricata/commit/ef035c7603293a10c5ad087e3d20b05f75236144x-refsource-misc, patch
- https://github.com/OISF/suricata/releases/tag/suricata-8.0.6x-refsource-misc, release-notes
- https://redmine.openinfosecfoundation.org/issues/8621x-refsource-misc, permissions-required
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.