CVE-2026-22185

N/A

Description

OpenLDAP Lightning Memory-Mapped Database (LMDB) versions up to and including 0.9.14, prior to commit 8e1fda8, contain a heap buffer underflow in the readline() function of mdb_load. When processing malformed input containing an embedded NUL byte, an unsigned offset calculation can underflow and cause an out-of-bounds read of one byte before the allocated heap buffer. This can cause mdb_load to crash, leading to a limited denial-of-service condition.

CVE Details

CVSS v3.1 ScoreN/A

Published1/7/2026

Last Modified1/14/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-125CWE-191

References

https://bugs.openldap.org/show_bug.cgi?id=10421(disclosure@vulncheck.com)

https://seclists.org/fulldisclosure/2026/Jan/5(disclosure@vulncheck.com)

https://seclists.org/fulldisclosure/2026/Jan/8(disclosure@vulncheck.com)

https://www.openldap.org/(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/openldap-lmdb-mdb-load-heap-buffer-underflow-in-readline(disclosure@vulncheck.com)

IOC Correlations

No correlations recorded

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