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Date: Thu, 5 May 2022 10:30:43 +0200
From: Javier Martinez Canillas <javierm@...hat.com>
To: Thomas Zimmermann <tzimmermann@...e.de>,
linux-kernel@...r.kernel.org
Cc: linux-fbdev@...r.kernel.org, Helge Deller <deller@....de>,
dri-devel@...ts.freedesktop.org,
Hans de Goede <hdegoede@...hat.com>,
Peter Jones <pjones@...hat.com>
Subject: Re: [PATCH 0/3] fbdev: Fix use-after-free caused by wrong fb_info
cleanup in drivers
Hello Thomas,
On 5/5/22 10:16, Thomas Zimmermann wrote:
[snip]
>> Patch #1 adds a WARN_ON() to framebuffer_release() to prevent the use-after-free
>> to happen.
>>
>> Patch #2 and patch #3 fixes the simplefb and efifb drivers respectively, to
>> free the resources at the correct place.
>
> From a quick look, vesafb seems to be affected as well.
>
Right, I wrongly assumed that we only cared about efifb and simplefb but forgot
that vesafb is used when setting a VESA mode with vga=foo. I'll add it in a v2.
> Best regards
> Thomas
>
--
Best regards,
Javier Martinez Canillas
Linux Engineering
Red Hat
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