CVE-2026-22185 — OpenLDAP LMDB mdb_load Heap Buffer Underflow in readline()
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_…
Published: 2026-01-07 · CVSS: 4.6 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7