NULL pointer dereference in nfdump - #VU142745
Published: August 15, 2026
Vulnerability identifier: #VU142745
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to null pointer dereference in ConvertRecordV2() in src/nfdump/compat_1_6_x/convert.c when processing a legacy v1.6.x block in which a CommonRecordType record appears before any ExtensionMapType record. A local user can supply a specially crafted file to cause a denial of service.
The issue affects the legacy v1.6.x block conversion path.
Affected software
nfdump
Remediation
Install security update from vendor's website.
nfdump - update to 1.7.9