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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Jan 7, 2026 |
| Suse | — | Upgrade openldap2_5Upgrade openldap2_5-docUpgrade openldap2_5-ppolicy-check-passwordUpgrade openldap2_5-clientUpgrade libldap-2_5-0Upgrade openldap2_5-contribUpgrade openldap2_5-devel | Jan 23, 2026 | Jan 23, 2026 |
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