Messages in this thread | ![/](/images/icornerl.gif) | | Date | Fri, 30 May 2003 13:43:14 +0100 | Subject | Re: [CHECKER] pcmcia user-pointer dereference | From | Mike Playle <> |
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On Fri, May 30, 2003 at 01:40:27PM +0100, David Hinds wrote: > On Thu, May 29, 2003 at 04:30:54PM -0500, Hollis Blanchard wrote: > > > > That's true for pcmcia_get_mem_page. However pcmcia_map_mem_page writes > > into the structure it verifies. I think pcmcia_get_first/next_window > > could also be used to corrupt memory (*handle = win in > > pcmcia_get_window). > > The map_mem_page ioctl can only be used by root. The get_*_window > ioctl's can't corrupt anything because they, like get_mem_page, only > read the target data structures. > > -- Dave
What about memory-mapped IO registers? Can this ioctl be used to cause an unwanted read from a memory mapped device?
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