linux-kernel - anonymous mmap() and random heap allocation

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <AANLkTilDmFF4IN1Glo_Bv_-eBX1jcdi7JDToeIbvToC8@mail.gmail.com>
Date:	Thu, 15 Jul 2010 16:48:48 -0500
From:	Xianghua Xiao <xiaoxianghua@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: anonymous mmap() and random heap allocation

It seems mmap() can not do random allocation for malloc()/heap on
Linux, anyone used pax's 'mmap randonness' option for that? what's the
price for that?

I want to port openbsd's malloc() to linux to avoid heap
crashes(overrun/underrun), openbsd's malloc() can do random allocation
for security reasons, meanwhile it helps to avoid some
overrun/underrun crashes with no extra cost, the latter is what I'm
looking for.

thanks,
xianghua
--
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/