linux-kernel - Re: [Bug Report] warning in FAT filesystem

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Message-ID: <87y0vqhbp8.fsf@mail.parknet.co.jp>
Date: Thu, 24 Apr 2025 05:20:19 +0900
From: OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>
To: "now4yreal" <now4yreal@...mail.com>
Cc: "linux-kernel" <linux-kernel@...r.kernel.org>
Subject: Re: [Bug Report] warning in FAT filesystem

"now4yreal" <now4yreal@...mail.com> writes:

> Although I understand that errors caused by maliciously crafted file
> systems may not be within your scope of consideration, please consider
> whether such validation might indeed lead to any other chain
> reactions? Please feel free to reach out if you need any clarification
> or would like additional information.
>
> I’ve attached the POC (written in C) for your convenience ― it can be
> compiled directly with `gcc`.

Yes, corrupted image can be the cause of fatal error. Can you real
reproducible program instead of stress test?  If it can be prevented
easily, we would be able to add the check.

Thanks.
-- 
OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>