Re: copy_from_user/copy_to_user question

Al Viro
2005-12-03T01:38:37Z

On Fri, Dec 02, 2005 at 08:09:59PM -0500, Steven Rostedt wrote:
> > Secondly, they seem to use memcpy as opposed to using
> > copy_to_user/copy_from_user which is also very
> > dangerous.
>
> If they are grabbing data from user context into kernel (or vise versa)
> that could easily cause an oops. Not to mention it is a security risk.

Not to mention it simply won't work on a many platforms, no matter what...