linux-kernel - Re: CVE-2021-46966: ACPI: custom_method: fix potential use-after-free issue

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Date: Thu, 29 Feb 2024 06:22:34 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: Michal Hocko <mhocko@...e.com>
Cc: cve@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: CVE-2021-46966: ACPI: custom_method: fix potential
 use-after-free issue

On Wed, Feb 28, 2024 at 05:14:22PM +0100, Michal Hocko wrote:
> Hi,
> this seems like another example of a reasonable fix with a very dubious
> CVE IMHO. Allowing access to /sys/kernel/debug/acpi/custom_method to
> anybody but trusted actor is a huge security problem on its own. I
> really fail to see any value marking this clear bug fix as security
> related.

It was picked because it was a use-after-free fix, AND it is part of the
"import the GSD database into the CVE database" that the CVE project
asked us to do.

thanks,

greg k-h