linux-kernel - Re: [PATCH v3] selftests/capabilities: Fix possible file leak in copy_fromat

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Date: Tue, 2 Jul 2024 10:22:57 -0600
From: Shuah Khan <skhan@...uxfoundation.org>
To: Ma Ke <make24@...as.ac.cn>, shuah@...nel.org, usama.anjum@...labora.com,
 swarupkotikalapudi@...il.com, amer.shanawany@...il.com, kees@...nel.org,
 akpm@...ux-foundation.org, luto@...nel.org
Cc: linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org,
 Shuah Khan <skhan@...uxfoundation.org>
Subject: Re: [PATCH v3] selftests/capabilities: Fix possible file leak in
 copy_fromat_to

On 6/30/24 07:00, Ma Ke wrote:
> The open() function returns -1 on error. openat() and open() initialize
> 'from' and 'to', and only 'from' validated with 'if' statement. If the
> initialization of variable 'to' fails, we should better check the value
> of 'to' and close 'from' to avoid possible file leak. Improve the checking
> of 'from' additionally.
> 
> Fixes: 32ae976ed3b5 ("selftests/capabilities: Add tests for capability evolution")
> Signed-off-by: Ma Ke <make24@...as.ac.cn>
> ---
> Changes in v3:
> - Thank you for your interest in our vulnerability detection method. We
> extract vulnerability characteristics from a known vulnerability and match
> the same characteristics in the project code. As our work is still in
> progress, we are not able to disclose it at this time. Appreciate your
> understanding, we could better focus on the potential vulnerability itself.
> Reference link: https://lore.kernel.org/all/20240510003424.2016914-1-samasth.norway.ananda@oracle.com/

Sorry it is a NACK - without more details on the tool and warning,
I can't accept this patch.

thanks,
-- Shuah