Vulnerability 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.
Related Weaknesses (CWE)
References
- https://bugs.openldap.org/show_bug.cgi?id=10421
- https://seclists.org/fulldisclosure/2026/Jan/5
- https://seclists.org/fulldisclosure/2026/Jan/8
- https://www.openldap.org/
- https://www.vulncheck.com/advisories/openldap-lmdb-mdb-load-heap-buffer-underflo
FAQ
What is CVE-2026-22185?
CVE-2026-22185 is a documented vulnerability. 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 m...
How severe is CVE-2026-22185?
CVSS scoring is not yet available for CVE-2026-22185. Check NVD for updates.
Is there a patch for CVE-2026-22185?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.