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Message-ID: <14558692.afnJ5aRU9J@wanheda>
Date: Wed, 21 Jun 2017 12:46:28 +0200
From: Agostino Sarubbo <ago@...too.org>
To: oss-security@...ts.openwall.com
Subject: Re: Qualys Security Advisory - The Stack Clash
On Monday 19 June 2017 08:28:43 Qualys Security Advisory wrote:
> III. Solutions
> - Recompile all userland code (ld.so, libraries, binaries) with GCC's
> "-fstack-check" option, which prevents the stack-pointer from moving
> into another memory region without accessing the stack guard-page (it
> writes one word to every 4KB page allocated on the stack).
For the record, Gentoo Hardened enables by default -fstack-check=specific
--
Agostino Sarubbo
Gentoo Linux Developer
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