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SubjectRe: [PATCH][2.4] cleanup ptrace secfix and fix most side effects
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On Iau, 2003-05-08 at 23:05, Bernhard Kaindl wrote:
> - mb();
> - if (!is_dumpable(child))
> - return -EPERM;
>
> if (!(child->ptrace & PT_PTRACED))
> return -ESRCH;
>
> Using is_dumpable() here is not neccesary because the checks done here are:
>
> > if (!(child->ptrace & PT_PTRACED))
> > return -ESRCH;

Except that current->mm->dumpable is not per task but per mm so you
might ptrace one thread and have another go setuid.


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