CVE-2016-6522: OpenBSD

Medium severity, CVSS 5.5. EPSS: 0.4% chance of exploitation in the next 30 days.

Integer overflow in the uvm_map_isavail function in uvm/uvm_map.c in OpenBSD 5.9 allows local users to cause a denial of service (kernel panic) via a crafted mmap call, which triggers the new mapping to overlap with an existing mapping.

Affected products

• OpenBSD OpenBSD: version 5.9 only

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