[fprint] finnerprint can be rerolled without authentication

[Bastien Nocera]

On Tue, 2015-04-14 at 14:31 +0300, Olli Syrjälä wrote:
> Sorry if this is asked before, I tried this howto: 
> http://tryitnw.blogspot.de/2013/02/easy-steps-to-enable-finger-print.html 
> and it ended up that way that I can get sudo rights just with 
> rerolling and then using them without knowing sudo password. It 
> should not work like that.

There's already a bug filed about that:
https://bugzilla.freedesktop.org/show_bug.cgi?id=89407

Cheers