The disconnect method in the Philips USB Webcam (pwc) driver in Linux kernel 2.6.x before 2.6.22.6 "relies on user space to close the device," which allows user-assisted local attackers to cause a denial of service (USB subsystem hang and CPU consumption in khubd) by not closing the device after the disconnect is invoked. NOTE: this rarely crosses privilege boundaries, unless the attacker can convince the victim to unplug the affected device.
| Product | Vendor | Version |
|---|---|---|
| n/a | n/a | < 1.3.40 |
| n/a | n/a | < e0643d46759db8b84c0504a676043e5e341b6c81 |