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Open Source and information security mailing list archives
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Date: Sun, 08 Nov 2009 22:30:45 -0800 From: "H. Peter Anvin" <hpa@...or.com> To: matthieu castet <castet.matthieu@...e.fr> CC: Alan Cox <alan@...rguk.ukuu.org.uk>, linux-kernel@...r.kernel.org Subject: Re: Using x86 segments against NULL pointer deference exploit On 11/06/2009 12:35 PM, matthieu castet wrote: > > May be the sane way should be to forbid mapping page 0, and make run > application needing page 0 in a > emulator. After all it is for special case [1] : > - Win16 binary for wine > - upstream version of dosemu and qemu have workaround > > But some distro still set mmap_min_addr to 0 (ubuntu+wine, ...) :( > Don't Do That, Then[TM]. -hpa -- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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