CVE-2002-1667 Denial of service in n/a

Low 2.1 Published 21 Jun 2005 Updated 8 Aug 2024

Local attackers can crash FreeBSD systems by calling msync on specific unaccessed memory maps due to improper VM object checks.

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-2002-1667?

CVE-2002-1667 is a low-severity denial of service vulnerability in Freebsd Freebsd, published on 21 Jun 2005. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The virtual memory management system in FreeBSD 4.5-RELEASE and earlier does not properly check the existence of a VM object during page invalidation, which allows local users to cause a denial of service (crash) by calling msync on an unaccessed memory map created with MAP_ANON and MAP_NOSYNC flags.

Which versions are affected by CVE-2002-1667?

It affects 1 product.

Products include Freebsd Freebsd.

How do I fix CVE-2002-1667?

No fix has been published for CVE-2002-1667 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2002-1667 being exploited?

There is no known exploitation of CVE-2002-1667 in the wild and no public exploit code.

All Freebsd Freebsd vulnerabilities

Sources

Also known as GHSA-vq6h-p287-jxff.