CVE-2026-22185Published

OpenLDAP LMDB mdb_load Heap Buffer Underflow in readline()

Exact source revision recorded 29 Oct 2026 21:48:56 UTC. It does not establish the source's current position. Latest evidence.

Recorded JSON

cve-program · CVE-2026-22185

Published

OpenLDAP Lightning Memory-Mapped Database (LMDB) versions 0.9.14 before 0.9.34, 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 published: 7 Jan 2026 20:26:30 UTC
Source modified: 29 Oct 2026 20:19:23 UTC
Observed here: 29 Oct 2026 21:48:56 UTC
Source terms: CVE Program Terms of Use

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This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: cve-program · CVE Program Terms of Use. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 4.0 · 4.6 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