Description
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, AppLayerParserSetTransactionInspectId() in src/app-layer-parser.c uses an inverted guard and marks only already-inspected transactions as inspected. On flows passed by a pass rule or pass-the-flow exception policy, detection is skipped, so completed transactions remain unmarked, are never freed, and are repeatedly rescanned. The per-flow list can grow without bound with quadratic cleanup cost, causing CPU and memory exhaustion. This issue is fixed in version 8.0.6.
Affected products
oisf: suricata
References6
- github.com/OISF/suricata/security/advisories/GHSA-gjwr-75gq-877m MitigationVendor Advisory
- github.com/OISF/suricata/commit/006e21c1ccc38c1c815e7945d54b463… Patch
- github.com/OISF/suricata/commit/60a83c62a1dfdfb589b2bad27fb7fc3… Patch
- github.com/OISF/suricata/pull/15726 Patch
- github.com/OISF/suricata/releases/tag/suricata-8.0.6 Release Notes
- redmine.openinfosecfoundation.org/issues/8628 Permissions Required
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 1% percentile: 53 · as of 8 November 2026
- CWE
- CWE-401CWE-407
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