CVE-2016-6246: OpenBSD

Medium severity, CVSS 4.4. EPSS: 0.4% chance of exploitation in the next 30 days.

OpenBSD 5.8 and 5.9 allows certain local users with kern.usermount privileges to cause a denial of service (kernel panic) by mounting a tmpfs with a VNOVAL in the (1) username, (2) groupname, or (3) device name of the root node.

Affected products

• OpenBSD OpenBSD: version 5.8 only; version 5.9 only

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