7.5

CVE-2026-71855

Suricata flow: IPv4/IPv6 hash collision can reuse wrong flow state

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.17 and 8.0.6, src/flow-hash.c can treat an IPv4 and IPv6 flow as equal without comparing the IP family when their raw address words, ports, protocol, VLAN, recursion level, live device, and hash bucket align. An IPv6 packet can therefore reuse IPv4 flow state or the reverse, causing incorrect flowbit state, detection bypass, or IP-only bypass. This issue is fixed in versions 8.0.6 and 7.0.17.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Oisf ≫ Suricata Version < 7.0.17
Oisf ≫ Suricata Version >= 8.0.0 < 8.0.6
VulnDex Vulnerability Enrichment
Diese Information steht angemeldeten Benutzern zur Verfügung. Login Login
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.31% 0.243
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
security-advisories@github.com 5.9 2.2 3.6
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE-697 Incorrect Comparison

The product compares two entities in a security-relevant context, but the comparison is incorrect.

https://github.com/OISF/suricata/releases/tag/suricata-7.0.17
Release Notes
https://github.com/OISF/suricata/releases/tag/suricata-8.0.6
Release Notes
https://github.com/OISF/suricata/security/advisories/GHSA-fvwh-wjcq-2586
Vendor Advisory
https://github.com/OISF/suricata/commit/181b3b2fdd1fe87e4534de4fc79e29a083ef125f
Patch
https://github.com/OISF/suricata/commit/4e2f23d031fbcfd72883bacd3d723c9874f23701
Patch
https://github.com/OISF/suricata/commit/bc41dcc854e24487d3786ce578a8a86a8350ab20
Patch
https://redmine.openinfosecfoundation.org/issues/8558
Permissions Required