CVE-2026-45762

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5, Suricata's IP defragmentation tracker lookup did not verify that an existing tracker used the same IP address family as the packet being processed. Under crafted fragmented IPv4/IPv6 traffic, an IPv6 fragment could be associated with an IPv4 defragmentation tracker. This can lead to a remote packet-triggered crash and denial of service when Suricata performs the relevant defragmentation. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, if using Suricata as an IDS with AF_PACKET, enabling AF_PACKET's `defrag` option may prevent Suricata from seeing such fragmented packets.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315
https://github.com/OISF/suricata/security/advisories/GHSA-gv2j-f6jv-3878
https://redmine.openinfosecfoundation.org/issues/8510

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-10 22:16

Updated : 2026-09-11 21:17

NVD link : CVE-2026-45762

Mitre link : CVE-2026-45762

CVE.ORG link : CVE-2026-45762

JSON object : View

Products Affected

No product.

CWE

CWE-843

Access of Resource Using Incompatible Type ('Type Confusion')

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