Date: Fri, 30 Mar 2012 18:47:15 -0400 From: Richard Yao <ryao@cs.stonybrook.edu> To: Konstantin Belousov <kostikbel@gmail.com> Cc: freebsd-stable@freebsd.org Subject: Re: Text relocations in kernel modules Message-ID: <4F7637F3.2060502@cs.stonybrook.edu> In-Reply-To: <20120330224631.GJ2358@deviant.kiev.zoral.com.ua> References: <4F75E404.8000104@cs.stonybrook.edu> <4F75EF86.6090909@cs.stonybrook.edu> <20120330190713.GG2358@deviant.kiev.zoral.com.ua> <4F760C9E.6060405@cs.stonybrook.edu> <20120330194649.GH2358@deviant.kiev.zoral.com.ua> <4F761371.7020606@cs.stonybrook.edu> <20120330203605.GI2358@deviant.kiev.zoral.com.ua> <4F76350F.8000708@cs.stonybrook.edu> <20120330224631.GJ2358@deviant.kiev.zoral.com.ua>
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--------------enig1A225317806B90D4877912FC Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable On 03/30/12 18:46, Konstantin Belousov wrote: > Reread what I wrote to you. Also, it pays off learning how ELF works > before making conclusion from the absence of the output of readelf -d. > Amd64 modules _are not_ shared objects. Whether or not they are shared objects is irrelevant. The fact is that they have text relocations, which interfere with ASLR. Do I need to produce exploit code before you take me seriously? --------------enig1A225317806B90D4877912FC Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iQIcBAEBAgAGBQJPdjf2AAoJELFAT5FmjZuEp4QP/2BpjIDJku1yxnrZA0E3QH31 u1VD3UCWcVZfk9q/HaCO8UCcUYZjN8ehVBfmenEFaOB0J0mXz42rvgdZD4iNDyEo ykhIOadc4kSycpfCaD7/0hquqbXlxLWLOVzkNP9xXthZfLZ6hP6w9J2M9F0koWoY P+MV33PznHa/5s+QV7oQfw/amlufQ2YlwSfBC+Bh4twcCXdUX7HvO+AG+1RVi6a6 60s/PgOC52k5hmyo1H3tbkufsxXcPowVYzaoYlms4h2IuaUvwScsz05YRggg28sH 6ukRkzeZgYE72Q6hBtJfVVu9eEUPik8mchBUQ/io1Nv0oA12aD1kRlRv3k94uWbX 7ILd1xNzTb11bGxpFXpHXLOBuCVyd0fYhcyLYARJIDz9GTm6fAdnquKj4w6Cad7J M6/PzlBdFvmt7p/bG7Llk/QMGaQyPX5bwIpM49ti6lUIxrDbOcxtlPkD3bxFANeB PP4zopHCiSPJQXxdKT/RdXKN52N5fAcFCBkJgx2hCxrdnWPnAsJJuy2vv7FfplwO KRw7MuIsn4iXM1nNWdgKzMf8yxae077KD97Xhh3x0sDYMsXv29uOd4xLABHnc57V XOf/gtnz8UGGyllhqWsMut2vL2ZtTWiKrXYzR0paDJx3Hrc+0/gBncss/pErpc8D yO1Ca7ysyJV6TLPAUltS =zqaZ -----END PGP SIGNATURE----- --------------enig1A225317806B90D4877912FC--
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