Hi all, Here's a second cut at my attempt to make call_usermodehelper a bit more "safe". It includes some patches from my previous series, and one new one. In all, this is a much smaller patchset, with better functionality in the end. The issue is that if you end up getting write access to kernel memory, if you change the string '/sbin/hotplug' to point to '/home/hacked/my_binary', then the next u