What’s Vulnerable › Vulnerabilities

CVE-2024-55627: Suricata segfault on StreamingBufferSlideToOffsetWithRegions

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-01-06 · updated 2026-06-17
• Weakness: CWE-122

Description

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.8, a specially crafted TCP stream can lead to a very large buffer overflow while being zero-filled during initialization with memset due to an unsigned integer underflow. The issue has been addressed in Suricata 7.0.8.

Affected products

• OISF suricata: before 7.0.8 — fixed in 7.0.8

How to fix

Upgrade to a fixed version: OISF suricata 7.0.8. Check the vendor advisory for mitigations.

References

• https://github.com/OISF/suricata/commit/282509f70c4ce805098e59535af445362e3e9ebd
• https://github.com/OISF/suricata/commit/8900041405dbb5f9584edae994af2100733fb4be
• https://github.com/OISF/suricata/commit/9a53ec43b13f0039a083950511a18bf6f408e432
• https://github.com/OISF/suricata/security/advisories/GHSA-h2mv-7gg8-8x7v
• https://redmine.openinfosecfoundation.org/issues/7393

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