Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| OpenLDAP Foundation / OpenLDAP | affected 0.9.14 before 0.9.34 |
CWE
CWE-125, CWE-191
References
- 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-underflow-in-readline
- https://bugs.openldap.org/show_bug.cgi?id=10421
ADP enrichment
No English description supplied.
No references supplied.