CVE-2010-0623: Canonical Ubuntu Linux

Medium severity, CVSS 4.9. EPSS: 0.4% chance of exploitation in the next 30 days.

The futex_lock_pi function in kernel/futex.c in the Linux kernel before 2.6.33-rc7 does not properly manage a certain reference count, which allows local users to cause a denial of service (OOPS) via vectors involving an unmount of an ext3 filesystem.

Affected products

• Canonical Ubuntu Linux: version 6.06 only; version 8.04 only; version 8.10 only; version 9.04 only; version 9.10 only
• Linux Linux Kernel: before 2.6.33 (fixed in 2.6.33); version 2.6.33 only
• Opensuse Opensuse: version 11.2 only

Published 2010-02-15. Last modified 2026-06-16.