Messages in this thread |  | | From | Keith Owens <> | Subject | Re: Local root exploit with kmod and modutils > 2.1.121 | Date | Fri, 17 Nov 2000 07:24:36 +1100 |
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On Thu, 16 Nov 2000 16:04:23 +0000 (GMT), Alan Cox <alan@lxorguk.ukuu.org.uk> wrote: >> request_module has the same effect as running suid. dev_load() can >> take the interface name and pass it to modprobe unchanged and modprobe >> does not verify its input, it trusts root/kernel. > >Then dev_load is being called the wrong way. In older kernels we explicitly >only did a dev_load with user passed names providing suser() was true.
ping6 -I module_name. ping6 is setuid, it passes the interface name to the kernel while it holds root privileges, suser() == true. It is not reasonable to expect setuid programs to know that Linux does something special with some parameters when no other O/S has that "feature".
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