Re: [PATCH 4/7] mm: Introduce verify_page_range()

[Peter Zijlstra]

On Mon, Apr 12, 2021 at 01:05:09PM -0700, Kees Cook wrote:
> On Mon, Apr 12, 2021 at 10:00:16AM +0200, Peter Zijlstra wrote:
> > +struct vpr_data {
> > +	int (*fn)(pte_t pte, unsigned long addr, void *data);
> > +	void *data;
> > +};
> 
> Eeerg. This is likely to become an attack target itself. Stored function
> pointer with stored (3rd) argument.

You got some further reading on that? How exactly are those exploited?