CVE-2009-2848: Canonical Ubuntu Linux

Medium severity, CVSS 5.9. EPSS: 0.5% chance of exploitation in the next 30 days.

The execve function in the Linux kernel, possibly 2.6.30-rc6 and earlier, does not properly clear the current->clear_child_tid pointer, which allows local users to cause a denial of service (memory corruption) or possibly gain privileges via a clone system call with CLONE_CHILD_SETTID or CLONE_CHILD_CLEARTID enabled, which is not properly handled during thread creation and exit.

Affected products

• Canonical Ubuntu Linux: version 6.06 only; version 8.04 only; version 8.10 only; version 9.04 only
• Fedoraproject Fedora: version 11 only
• Linux Linux Kernel: up to and including 2.6.29.5; version 2.6.30 only
• Novell Linux Desktop: version 9 only
• Opensuse Opensuse: version 11.0 only
• Red Hat Enterprise Linux Desktop: version 3.0 only; version 5.0 only
• Red Hat Enterprise Linux Server: version 3.0 only; version 5.0 only
• Red Hat Enterprise Linux Workstation: version 3.0 only; version 5.0 only
• Suse Linux Enterprise Desktop: version 10 only
• Suse Linux Enterprise Server: version 9 only; version 10 only
• VMware Esx: version 4.0 only
• VMware Vma: version 4.0 only

Published 2009-08-18. Last modified 2026-06-16.