CVE-2007-3722 Denial of service in n/a

Low 2.1 Published 12 Jul 2007 Updated 7 Aug 2024

Local attackers can cause CPU exhaustion and denial of service in the FreeBSD kernel by exploiting the 4BSD scheduler's sampling mechanism.

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-2007-3722?

CVE-2007-3722 is a low-severity denial of service vulnerability in Freebsd Freebsd, published on 12 Jul 2007. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The 4BSD process scheduler in the FreeBSD kernel performs scheduling based on CPU billing gathered from periodic process sampling ticks, which allows local users to cause a denial of service (CPU consumption) by performing voluntary nanosecond sleeps that result in the process not being active during a clock interrupt, as described in "Secretly Monopolizing the CPU Without Superuser Privileges."

Which versions are affected by CVE-2007-3722?

It affects 1 product.

Products include Freebsd Freebsd.

How do I fix CVE-2007-3722?

No fix has been published for CVE-2007-3722 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-2007-3722 being exploited?

There is no known exploitation of CVE-2007-3722 in the wild and no public exploit code.

All Freebsd Freebsd vulnerabilities

Sources

Also known as GHSA-6w9q-h3xg-92gf.