CVEvulnerability
CVE-2026-22185
4.6 MEDIUM
Official page ↗
- Status
- Deferred
- Published
- 2026-01-07
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 4.0 ([email protected])
- 4.6 MEDIUM — CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Weaknesses
- CWE-125, CWE-191
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
References
- https://bugs.openldap.org/show_bug.cgi?id=10421 bugs.openldap.org
- https://seclists.org/fulldisclosure/2026/Jan/5 seclists.org
- https://seclists.org/fulldisclosure/2026/Jan/8 seclists.org
- https://www.openldap.org/ www.openldap.org
- https://www.vulncheck.com/advisories/openldap-lmdb-mdb-load-heap-buffer-underflow-in-readline www.vulncheck.com