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CVE-2009-1338

Description

The kill_something_info function in kernel/signal.c in the Linux kernel before 2.6.28 does not consider PID namespaces when processing signals directed to PID -1, which allows local users to bypass the intended namespace isolation, and send arbitrary signals to all processes in all namespaces, via a kill command.

POC

Reference

- http://www.redhat.com/support/errata/RHSA-2009-1081.html

- http://www.ubuntu.com/usn/usn-793-1

Github

No PoCs found on GitHub currently.