CVE-2016-6522 Integer overflow in n/a

Medium 5.5 Published 7 Mar 2017 Updated 6 Aug 2024

Local attackers can cause a kernel panic and denial of service in OpenBSD via a crafted mmap call triggering an integer overflow.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2016-6522?

CVE-2016-6522 is a medium-severity vulnerability in Openbsd Openbsd, published on 7 Mar 2017. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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.

Weakness: CWE-190

Which versions are affected by CVE-2016-6522?

It affects 1 product.

Products include Openbsd Openbsd.

How do I fix CVE-2016-6522?

No fix has been published for CVE-2016-6522 yet. Limit exposure of the affected software until one is available.

Is CVE-2016-6522 being exploited?

There is no known exploitation of CVE-2016-6522 in the wild and no public exploit code.

All Openbsd Openbsd vulnerabilities

Sources

Also known as GHSA-3g72-28w7-c4jp.