CVE-2009-1337: Linux Kernel

Medium severity, CVSS 4.4. EPSS: 1.3% chance of exploitation in the next 30 days.

The exit_notify function in kernel/exit.c in the Linux kernel before 2.6.30-rc1 does not restrict exit signals when the CAP_KILL capability is held, which allows local users to send an arbitrary signal to a process by running a program that modifies the exit_signal field and then uses an exec system call to launch a setuid application.

Affected products

• Linux Linux Kernel: up to and including 2.6.29; 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 2009-04-22. Last modified 2026-06-16.