Comment 7 for bug 759725

On Tue, Apr 26, 2011 at 05:25:33PM -0000, Kees Cook wrote:
> On Tue, Apr 26, 2011 at 11:21:38AM -0000, Richard W.M. Jones wrote:
> > What is being protected by this mode change? This kernel is distributed
> > on hundreds of mirrors -- there is no secret in here.
>
> The mode changes do not protect a system from any dedicated attacker (for
> the reason you state), but it does have real-world benefits against
> simplistic kernel exploitation (keeping kernel symbols away from non-root
> users). It is absolutely a trade-off.

This non-root user that we imagine has no access to the world
wide web? This is absolutely nuts, sorry.

Rich.

--
Richard Jones
Red Hat