Re: unexporting sys_call_table a good idea?

[Kasper Dupont <kasperd@daimi.au.dk>]

"Paul Clements (home)" wrote:
> 
> Hi all,
> 
> given the recent ptrace-related security bug, it sure would be nice to
> have sys_call_table exported, so that I could just disable ptrace
> altogether on affected systems (where no one is doing any debugging or
> devel work, anyway)... I realize that there are race conditions, etc.,
> with replacing syscalls, but could those not be solved?... as it is,
> rather than being able to simply compile an external module (which
> disables ptrace) and load it on affected systems, I am forced to
> recompile an entire kernel, install it on the affected systems, and
> reboot them all...

You could get the address of sys_call_table from the System.map file
and pass it as an argument to the module.

-- 
Kasper Dupont -- der bruger for meget tid på usenet.
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