CVE-2009-0322: Canonical Ubuntu Linux

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

drivers/firmware/dell_rbu.c in the Linux kernel before 2.6.27.13, and 2.6.28.x before 2.6.28.2, allows local users to cause a denial of service (system crash) via a read system call that specifies zero bytes from the (1) image_type or (2) packet_size file in /sys/devices/platform/dell_rbu/.

Affected products

• Canonical Ubuntu Linux: version 7.10 only; version 8.04 only; version 8.10 only
• Debian Debian Linux: version 4.0 only; version 5.0 only
• Linux Linux Kernel: before 2.6.27.13 (fixed in 2.6.27.13); from 2.6.28, before 2.6.28.2 (fixed in 2.6.28.2)

Published 2009-01-28. Last modified 2026-06-16.