What’s Vulnerable › Vulnerabilities

CVE-2024-38536: Suricata http/range: NULL-ptr deref when http.memcap is reached

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2024-07-11 · updated 2026-06-17
• Weakness: CWE-476

Description

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. A memory allocation failure due to `http.memcap` being reached leads to a NULL-ptr reference leading to a crash. Upgrade to 7.0.6.

Affected products

• OISF suricata: before 7.0.6 — fixed in 7.0.6

How to fix

Upgrade to a fixed version: OISF suricata 7.0.6. Check the vendor advisory for mitigations.

References

• https://github.com/OISF/suricata/security/advisories/GHSA-j32j-4w6g-94hh
• https://redmine.openinfosecfoundation.org/issues/7029
• https://redmine.openinfosecfoundation.org/issues/7033
• https://github.com/OISF/suricata/security/advisories/GHSA-j32j-4w6g-94hh
• https://redmine.openinfosecfoundation.org/issues/7029
• https://redmine.openinfosecfoundation.org/issues/7033

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