CVE-2007-5093

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.

🔗 References (44)

• secalert@redhathttp://marc.info/?l=linux-kernel&m=118873457814808&w=2
• secalert@redhathttp://marc.info/?l=linux-kernel&m=118880154122548&w=2
• secalert@redhathttp://rhn.redhat.com/errata/RHSA-2008-0972.html
• secalert@redhathttp://secunia.com/advisories/26994
• secalert@redhathttp://secunia.com/advisories/28170
• secalert@redhathttp://secunia.com/advisories/28706
• secalert@redhathttp://secunia.com/advisories/28971
• secalert@redhathttp://secunia.com/advisories/29058
• secalert@redhathttp://secunia.com/advisories/30294
• secalert@redhathttp://secunia.com/advisories/32799
• secalert@redhathttp://www.debian.org/security/2007/dsa-1381
• secalert@redhathttp://www.debian.org/security/2008/dsa-1503
• secalert@redhathttp://www.debian.org/security/2008/dsa-1504
• secalert@redhathttp://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.22.6
• secalert@redhathttp://www.mandriva.com/security/advisories?name=MDVSA-2008:008