On Wed, Sep 15, 2010 at 03:09:39PM -0400, Robert P. J. Day wrote: > i'm experimenting with some basic removable media mounting > exercises for an upcoming class, and i read that, while you can use > gconf-editor to change some of the mount options in cases like that, > there is no way to override the mount options of nodev, noexec and > nosuid. for example, that claim is made here (admittedly for fedora, > but it appears to be true for centos as well): > > http://scrolls.mafgani.net/2007/03/gnome-automount-options/ > > is there somewhere that one could see and verify that those options > always hold for mountable filesystems on removable media? thanks. I'm sure you could look in the source for verification. But as for *why*: if you could mount removable media with suid executables or device files, in order to get root access on a system, all you'd need to do is make a filesystem containing a setuid root shell. Or a world rw /dev/sda. -- Matthew Miller mattdm at mattdm.org <http://mattdm.org/>