CVE-2016-6239: OpenBSD

Medium severity, CVSS 5.5. EPSS: 0.5% chance of exploitation in the next 30 days.

The mmap extension __MAP_NOFAULT in OpenBSD 5.8 and 5.9 allows attackers to cause a denial of service (kernel panic and crash) via a large size value.

Affected products

• OpenBSD OpenBSD: version 5.8 only; version 5.9 only

Published 2017-03-07. Last modified 2026-06-17.