Infinite Loop Vulnerability in Suricata Network Security Monitoring Engine

CVE-2025-29918

What is CVE-2025-29918?

Suricata, a widely used network intrusion detection and prevention system, has a vulnerability that can result in an infinite loop during packet processing. This occurs specifically when negated PCRE (Perl Compatible Regular Expressions) rules are utilized in certain conditions, causing the processing thread to become unresponsive. As a result, visibility and availability are significantly hindered, particularly in inline mode. This critical issue underscores the importance of updating Suricata to version 7.0.9 or later, where the vulnerability has been addressed.

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