Re: [PATCH] selinux: drop remapping of netlink classes

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On Thu, 2009-10-01 at 14:48 -0400, Stephen Smalley wrote:
> Drop remapping of netlink classes and bypass of permission checking
> based on netlink message type for policy version < 18.  This removes
> compatibility code introduced when the original single netlink
> security class used for all netlink sockets was split into
> finer-grained netlink classes based on netlink protocol and when
> permission checking was added based on netlink message type in Linux
> 2.6.8.  The only known distribution that shipped with SELinux and
> policy < 18 was Fedora Core 2, which was EOL'd on 2005-04-11.
> 
> Given that the remapping code was never updated to address the
> addition of newer netlink classes, that the corresponding userland
> support was dropped in 2005, and that the assumptions made by the
> remapping code about the fixed ordering among netlink classes in the
> policy may be violated in the future due to the dynamic class/perm
> discovery support, we should drop this compatibility code now.

Shouldn't we reject the load of such a policy as well?  No reason to
leave them with a false sense of working....

-Eric


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