linux-kernel - Re: [PATCH] ELF: fix kernel.randomize_va

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Message-Id: <171899883660.3914852.8274555416549796593.b4-ty@kernel.org>
Date: Fri, 21 Jun 2024 12:40:39 -0700
From: Kees Cook <kees@...nel.org>
To: Eric Biederman <ebiederm@...ssion.com>,
	Alexey Dobriyan <adobriyan@...il.com>
Cc: Kees Cook <kees@...nel.org>,
	linux-kernel@...r.kernel.org,
	linux-mm@...ck.org,
	akpm@...ux-foundation.org
Subject: Re: [PATCH] ELF: fix kernel.randomize_va_space double read

On Fri, 21 Jun 2024 21:54:50 +0300, Alexey Dobriyan wrote:
> ELF loader uses "randomize_va_space" twice. It is sysctl and can change
> at any moment, so 2 loads could see 2 different values in theory with
> unpredictable consequences.
> 
> Issue exactly one load for consistent value across one exec.
> 
> 
> [...]

Applied to for-next/execve, thanks!

[1/1] ELF: fix kernel.randomize_va_space double read
      https://git.kernel.org/kees/c/2a97388a807b

Take care,

-- 
Kees Cook