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SubjectRe: Local root exploit with kmod and modutils > 2.1.121
Date
Hello!

> > 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.

It checks CAP_SYS_MODULE nowadays.

Which does not look good by the way, it is function of request_module(),
rather than of caller.

Alexey
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