CVE-2008-2931: Canonical Ubuntu Linux

High severity, CVSS 7.8. EPSS: 0.4% chance of exploitation in the next 30 days.

The do_change_type function in fs/namespace.c in the Linux kernel before 2.6.22 does not verify that the caller has the CAP_SYS_ADMIN capability, which allows local users to gain privileges or cause a denial of service by modifying the properties of a mountpoint.

Affected products

• Canonical Ubuntu Linux: version 6.06 only; version 7.04 only; version 7.10 only; version 8.04 only
• Debian Debian Linux: version 4.0 only
• Linux Linux Kernel: before 2.6.22 (fixed in 2.6.22)
• Novell Suse Linux Enterprise Desktop: version 10.0 only
• Novell Suse Linux Enterprise Server: version 10.0 only
• Opensuse Opensuse: from 10.3, up to and including 11.0

Published 2008-07-09. Last modified 2026-06-16.