Suricata defrag: fragmented encapsulated traffic with fragments can lead to deadlock

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-46352
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-16 19:17:17 UTC
Updated2026-09-28 18:32:50 UTC
DescriptionSuricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Starting in version 8.0.0 and prior to version 8.0.5, Suricata's IP defragmentation code could deadlock when processing fragmented traffic containing an encapsulated tunnel protocol whose payload is itself fragmented. Version 8.0.5 contains a fix. No known workarounds are available.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.004700000 probability, percentile 0.382500000 (date 2026-09-29)

Problem Types: CWE-833 | CWE-833 CWE-833: Deadlock

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1CNADECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Oisf Suricata All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA OISF Suricata affected >= 8.0.0, < 8.0.5 Not specified

References

ReferenceSourceLinkTags
forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315 [email protected] forum.suricata.io Release Notes, Vendor Advisory
redmine.openinfosecfoundation.org/issues/8550 [email protected] redmine.openinfosecfoundation.org Permissions Required
github.com/OISF/suricata/security/advisories/GHSA-rc34-46x6-mxxm [email protected] github.com Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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