VULNERABILITY INTELLIGENCE
CVE-2009-1338
CVSS score4.6 MEDIUM
EPSS probability0.39%
CISA KEVNot currently listed
Published2009-04-22
Last modified2026-06-16
CVSS vectorAV:L/AC:L/Au:N/C:P/I:P/A:P
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.