Re: [PATCH v5] ELF: implement AT_RANDOM for glibc PRNG seeding | KernelTrap

Re: [PATCH v5] ELF: implement AT_RANDOM for glibc PRNG seeding

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From: Andrew Morton <akpm@...>

To: Kees Cook <kees.cook@...>

Cc: <drepper@...>, <jakub@...>, <arjan@...>, <roland@...>, <linux-kernel@...>, <libc-alpha@...>

Subject: Re: [PATCH v5] ELF: implement AT_RANDOM for glibc PRNG seeding

Date: Tuesday, October 21, 2008 - 4:01 pm

On Fri, 3 Oct 2008 10:59:17 -0700
Kees Cook <kees.cook@canonical.com> wrote:

quoted text> While discussing[1] the need for glibc to have access to random bytes
> during program load, it seems that an earlier attempt to implement
> AT_RANDOM got stalled.  This implements a random 16 byte string, available
> to every ELF program via a new auxv AT_RANDOM vector.
> 
> [1] http://sourceware.org/ml/libc-alpha/2008-10/msg00006.html

I read the above changeloglet and read the above-linked page and it's
still 87% unclear to me what this feature does.  Something to do with
stack randomisation, apparently.  I suppose I could go do further
hunting, but from the quality-of-changelog POV I don't think I should
need to do so.

IOW: better changelog, please.

It's unclear to me that the random-number issue got sorted out?
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Messages in current thread:

[PATCH] ELF: implement AT_RANDOM for future glibc use, Kees Cook, (Thu Oct 2, 8:16 pm)

Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Andi Kleen, (Mon Oct 6, 2:00 am)

Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Kees Cook, (Mon Oct 6, 1:50 pm)

Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Andi Kleen, (Mon Oct 6, 3:26 pm)

Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Kees Cook, (Mon Oct 6, 6:07 pm)

Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Roland McGrath, (Mon Oct 6, 7:58 pm)

Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Kees Cook, (Mon Oct 6, 8:31 pm)

Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Ulrich Drepper, (Mon Oct 6, 8:57 pm)

Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Kees Cook, (Mon Oct 6, 9:44 pm)

Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Ulrich Drepper, (Mon Oct 6, 9:51 pm)

Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Ulrich Drepper, (Mon Oct 6, 8:08 pm)

Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Andi Kleen, (Mon Oct 6, 7:28 pm)

Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Kees Cook, (Mon Oct 6, 6:01 pm)

Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Andi Kleen, (Mon Oct 6, 7:19 pm)

Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Kees Cook, (Mon Oct 6, 7:29 pm)

Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Andi Kleen, (Mon Oct 6, 7:44 pm)

Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Roland McGrath, (Thu Oct 2, 8:52 pm)

Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Kees Cook, (Fri Oct 3, 1:15 am)

Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Roland McGrath, (Fri Oct 3, 4:22 pm)

Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Jakub Jelinek, (Thu Oct 2, 8:43 pm)

[PATCH] ELF: implement AT_RANDOM for future glibc use, Kees Cook, (Fri Oct 3, 1:29 am)

Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Arjan van de Ven, (Fri Oct 3, 1:57 am)

Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Ulrich Drepper, (Fri Oct 3, 2:25 am)

[PATCH] ELF: implement AT_RANDOM for glibc PRNG seeding, Kees Cook, (Fri Oct 3, 10:50 am)

Re: [PATCH] ELF: implement AT_RANDOM for glibc PRNG seeding, Jakub Jelinek, (Fri Oct 3, 10:57 am)

[PATCH] ELF: implement AT_RANDOM for glibc PRNG seeding, Kees Cook, (Fri Oct 3, 1:33 pm)

Re: [PATCH] ELF: implement AT_RANDOM for glibc PRNG seeding, Ulrich Drepper, (Fri Oct 3, 1:41 pm)

[PATCH v5] ELF: implement AT_RANDOM for glibc PRNG seeding, Kees Cook, (Fri Oct 3, 1:59 pm)

Re: [PATCH v5] ELF: implement AT_RANDOM for glibc PRNG seeding, Andrew Morton, (Tue Oct 21, 4:01 pm)

Re: [PATCH v5] ELF: implement AT_RANDOM for glibc PRNG seeding, Ulrich Drepper, (Tue Oct 21, 4:22 pm)

Re: [PATCH v5] ELF: implement AT_RANDOM for glibc PRNG seeding, Andrew Morton, (Mon Oct 27, 1:46 am)

Re: [PATCH v5] ELF: implement AT_RANDOM for glibc PRNG seeding, Ulrich Drepper, (Sat Oct 18, 1:42 am)

Re: [PATCH] ELF: implement AT_RANDOM for glibc PRNG seeding, Ulrich Drepper, (Fri Oct 3, 10:56 am)

Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Kees Cook, (Fri Oct 3, 1:25 am)

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