A vulnerability has been discovered and corrected in ipmitool:

ipmievd as used in the ipmitool package uses 0666 permissions for
its ipmievd.pid PID file, which allows local users to kill arbitrary
processes by writing to this file (CVE-2011-4339).

In Mandriva the ipmievd daemon from the ipmitool package does not
have an initscript to start and stop the service, however one could
rather easily craft an initscript or start the service by other means
rendering the system vulnerable to this issue.

The updated packages have been patched to correct this issue.