Uncontrolled Recursion in Suricata - #VU162655
Published: November 9, 2026
Vulnerability identifier: #VU162655
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-674
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows an unauthenticated remote attacker to terminate Suricata and cause a denial of service.
The vulnerability exists due to uncontrolled recursion in Suricata's IP fragment processing when nested IP-in-IP packets bypass the decoded-layer limit and exhaust a packet-processing thread's stack. An unauthenticated remote attacker can send crafted IP fragments to trigger the crash without user interaction, rules, or non-default configuration.
Affected software
Suricata
Remediation
Install security update from vendor's website.
Suricata - update to 8.0.7