Re: [Xen-devel] [PATCH 21/21] libxc: range checks in xc_dom_p2m_host and _guest

[Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>]

Andrew Cooper writes ("Re: [PATCH 21/21] libxc: range checks in xc_dom_p2m_host 
and _guest"):
> On 06/06/13 19:52, Ian Jackson wrote:
> > +    if (pfn >= dom->rambase_pfn + dom->total_pages)
> > +        return INVALID_MFN;
> 
> Need to check whether pfn < dom->rambase_pfn otherwise you can just as
> easily underflow the array.

Duh, yes, thanks.

Ian.

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