NULL pointer dereference in Suricata - CVE-2024-38536
Published: July 11, 2024 / Updated: April 27, 2026
Vulnerability identifier: #VU128041
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: CVE-2024-38536
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to a null pointer dereference in the http/range handling code when processing HTTP traffic after http.memcap is reached. A remote attacker can send network traffic that triggers memory allocation failure to cause a denial of service.
Affected software
Suricata
How to mitigate CVE-2024-38536
Install security update from vendor's website.
Suricata - update to 7.0.6