linux-kernel - Re: [PATCH V2] fuse: Block access to folio overlimit

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Message-ID: <CAJfpegvk_KT7cnGDYbfBwPjQ68a9MkGrOa0Sva6fqYe3o_68cA@mail.gmail.com>
Date: Wed, 27 Aug 2025 14:27:58 +0200
From: Miklos Szeredi <miklos@...redi.hu>
To: Edward Adam Davis <eadavis@...com>
Cc: joannelkoong@...il.com, linux-fsdevel@...r.kernel.org, 
	linux-kernel@...r.kernel.org, 
	syzbot+2d215d165f9354b9c4ea@...kaller.appspotmail.com, 
	syzkaller-bugs@...glegroups.com
Subject: Re: [PATCH V2] fuse: Block access to folio overlimit

On Wed, 27 Aug 2025 at 03:46, Edward Adam Davis <eadavis@...com> wrote:
>
> syz reported a slab-out-of-bounds Write in fuse_dev_do_write.
>
> When the number of bytes to be retrieved is truncated to the upper limit
> by fc->max_pages and there is an offset, the oob is triggered.
>
> Add a loop termination condition to prevent overruns.

Applied, thanks.

Miklos