linux-hardening - Re: 6.5.13 regression: BUG: kernel NULL pointer dereference, address: 0000000000000020

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Message-ID: <a4890aae-2be8-42e3-9aa1-ee62f892553f@embeddedor.com>
Date: Wed, 29 Nov 2023 12:59:19 -0600
From: "Gustavo A. R. Silva" <gustavo@...eddedor.com>
To: Dan Moulding <dan@...m.net>, sam@...too.org
Cc: linux-hardening@...r.kernel.org, linux-kernel@...r.kernel.org,
 stable@...r.kernel.org, toralf.foerster@....de
Subject: Re: 6.5.13 regression: BUG: kernel NULL pointer dereference, address:
 0000000000000020

> the kernel source. But a quick (and possibly imperfect) grepping seems
> to show that struct neighbor was the only one used with
> __randomize_layout. So, I *think* it might be the only one that could
> cause a problem with the recent change to the randomize_layout plugin.

Yeah, I can confirm we don't currently have any other fake flex array
in a struct with __randomize_layout. :)

--
Gustavo