What’s Vulnerable › Vulnerabilities

CVE-2007-3722

• Severity: low (CVSS 2.1 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2007-07-12 · updated 2026-06-16

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."

Affected products

• FreeBSD: all versions

References

• http://osvdb.org/39599
• http://www.cs.huji.ac.il/~dants/papers/Cheat07Security.pdf
• http://osvdb.org/39599
• http://www.cs.huji.ac.il/~dants/papers/Cheat07Security.pdf

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