linux-kernel - Re: CVE-2021-47090: mm/hwpoison: clear MF_COUNT_INCREASED before retrying get_any

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Message-ID: <ZedoMIyhF8d_XLIV@tiehlicka>
Date: Tue, 5 Mar 2024 19:45:04 +0100
From: Michal Hocko <mhocko@...e.com>
To: cve@...nel.org, linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: CVE-2021-47090: mm/hwpoison: clear MF_COUNT_INCREASED before
 retrying get_any_page()

On Mon 04-03-24 19:11:17, Greg KH wrote:
> Description
> ===========
> 
> In the Linux kernel, the following vulnerability has been resolved:
> 
> mm/hwpoison: clear MF_COUNT_INCREASED before retrying get_any_page()

I would like to dispute this CVE. The interface is behind CAP_SYSADMIN
and allowing access to this to any untrusted party is risking serious
troubles. This is a testing only feature.

-- 
Michal Hocko
SUSE Labs