The process scheduler in the Linux kernel 2.4 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."
| Product | Vendor | Version |
|---|---|---|
| n/a | n/a | < 4.0.4 |
| n/a | n/a | <= 6.12.* |