CVE-2009-0028: Linux Kernel

Low severity, CVSS 2.1. EPSS: 0.7% chance of exploitation in the next 30 days.

The clone system call in the Linux kernel 2.6.28 and earlier allows local users to send arbitrary signals to a parent process from an unprivileged child process by launching an additional child process with the CLONE_PARENT flag, and then letting this new process exit.

Affected products

• Linux Linux Kernel: up to and including 2.6.28; version 2.2.27 only; version 2.4.36 only; version 2.4.36.1 only; version 2.4.36.2 only; version 2.4.36.3 only; …

Published 2009-02-27. Last modified 2026-06-16.