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From: "bryanmcsp at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/10149] stack guard should lead with zero byte to gain
 protections from str* writes
Date: Wed, 10 Nov 2021 14:12:36 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D10149

Takkelink <bryanmcsp at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bryanmcsp at gmail dot com

--- Comment #10 from Takkelink <bryanmcsp at gmail dot com> ---
When building the stack guard, it has been traditionally important to have =
the
value start (in memory) with a zero byte to protect the guard value (and the
rest of the stack past it) from being read via strcpy, etc.

This patch reduces the number of random bytes by one, leaving the leading z=
ero
byte. https://www.kildarehousebuilders.ie

--=20
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