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Message-ID: <1476040182.2329.72.camel@cvidal.org>
Date: Sun, 09 Oct 2016 21:09:42 +0200
From: Colin Vidal <colin@...dal.org>
To: kernel-hardening@...ts.openwall.com
Subject: Re: self introduction
Hi David,
> If you're interested, the HARDENED_ATOMIC team is looking for people
> to help porting the feature to other architectures. ARM is a
> reasonable candidate for someone new to the project. I have begun
> this effort myself, but if you'd like to collaborate I'd be
> grateful.
Sounds good!
> It essentially involves porting the original arch-specific features
> from PAX_REFCOUNT into Elena Reshetova's official HARDENED_ATOMIC
> tree, which can be found at
> https://github.com/esreshetova/linux-stable
The link seems broken (https://github.com/esreshetova too). I found
https://github.com/dwindsor/hardened-atomic but it is empty. Did I
miss something/Github filter?
> Please contact me if you have any questions; I'd be glad to help!
I actually have question. :-) As far as I understand, PAX_REFCOUNT [1]
is mainly a x86-only port from PaX project in order to avoid overflow
on atomic_t variable (and avoid use-after-free exploits). I am a
little bit confused about the Elena patch-set HARDENED_ATOMIC [2]. It
is a more mature/recent version of the port, isn't it ?
Thanks!
Colin
[1] https://lwn.net/Articles/668724/
[2] https://lwn.net/Articles/702640/
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