CVE-2006-4093: Canonical Ubuntu Linux

Medium severity, CVSS 4.9. EPSS: 0.5% chance of exploitation in the next 30 days.

Linux kernel 2.x.6 before 2.6.17.9 and 2.4.x before 2.4.33.1 on PowerPC PPC970 systems allows local users to cause a denial of service (crash) related to the "HID0 attention enable on PPC970 at boot time."

Affected products

• Canonical Ubuntu Linux: version 5.04 only; version 5.10 only; version 6.06 only
• Debian Debian Linux: version 3.1 only
• Linux Linux Kernel: from 2.4.0, before 2.4.33.1 (fixed in 2.4.33.1); from 2.6.0, before 2.6.17.9 (fixed in 2.6.17.9)

Published 2006-08-21. Last modified 2026-06-16.