{"id":"CVE-2007-3722","aliases":["EUVD-2007-3706","GHSA-6w9q-h3xg-92gf"],"status":"published","title":"The 4BSD process scheduler in the FreeBSD kernel performs scheduling based on CPU billing...","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.\"","severity":{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:N/I:N/A:P","level":"low","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.00264,"percentile":0.18401,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2007-07-12T16:00:00Z","modified":"2026-06-16T22:42:35Z","products":[{"vendor":"freebsd","product":"freebsd"}],"references":[{"url":"http://osvdb.org/39599","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"]},{"url":"http://www.cs.huji.ac.il/~dants/papers/Cheat07Security.pdf","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2007-3722"},{"url":"https://github.com/advisories/GHSA-6w9q-h3xg-92gf"}],"sources":{"cve":[{"id":"CVE-2007-3722","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.\"","status":"published","published":"2007-07-12T16:00:00Z","modified":"2024-08-07T14:28:51.693Z","updated_at":"2026-11-02T13:32:56.730199Z"}],"euvd":[{"id":"EUVD-2007-3706","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.\"","status":"published","published":"2007-07-12T16:00:00Z","modified":"2024-08-07T14:28:51Z","updated_at":"2026-11-03T01:16:24.965758Z"}],"ghsa":[{"id":"GHSA-6w9q-h3xg-92gf","title":"The 4BSD process scheduler in the FreeBSD kernel performs scheduling based on CPU billing...","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.\"","status":"published","published":"2022-05-01T18:16:31Z","modified":"2023-01-31T05:04:09Z","updated_at":"2026-11-02T14:48:37.279982Z"}],"nvd":[{"id":"CVE-2007-3722","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.\"","status":"published","published":"2007-07-12T16:30:00Z","modified":"2026-06-16T22:42:35.777Z","cvss":[{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:N/I:N/A:P","level":"low","assessor":"primary"}],"updated_at":"2026-11-02T14:01:17.002124Z"}]}}