[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

Re: /dev/fb* permissions, local DoS

i don't know why my message was reposted, it sure wasn't me, from
looking at the headers its ya broken hong kong news gateway or

this has already been delt with, the solution was MADEDEV now creates
the /dev/fb* devices mode 620 root.video.  

On Mon, Dec 18, 2000 at 12:19:45PM +1100, Chris Leishman wrote:
> On Mon, Dec 18, 2000 at 01:13:42AM +0100, Michel Dänzer wrote:
> <snip>
> > 
> > Only all apps which need a framebuffer device to work...
> Well, only the person on the console can run those apps anyway and thus should
> be the only one with access to the devices.
> > 
> > 
> > > Doesn't crash my i386 (riva tnt2, XF4) - but does put pretty colors over
> > > the top 1/3 of the screen before cat exits with "write error: No space left
> > > on device".
> > 
> > Yep, I think the crash is a bug in the framebuffer device, just like the other
> > problem where even reading from /dev/fb* caused a crash with atyfb IIRC.
> > 
> It's still a problem without the crash since any local user can overwrite the
> console screen with garbage.
> Regards,
> Chris

Ethan Benson

Attachment: pgphUY7fqZI5t.pgp
Description: PGP signature

Reply to: