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Date: Thu, 28 May 2026 07:33:56 +0200
From: Greg KH <gregkh@linuxfoundation.org>
To: Lucas Faria Mendes <lucas.fariamo08@gmail.com>
Cc: linux-kernel@vger.kernel.org, linux-staging@lists.linux.dev
Subject: Re: [PATCH] vme_user: tighten slave window bounds and validate
 offsets
Message-ID: <2026052810-gracious-timid-b936@gregkh>
References: <20260527211425.569038-1-lucas.fariamo08@gmail.com>
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In-Reply-To: <20260527211425.569038-1-lucas.fariamo08@gmail.com>

On Wed, May 27, 2026 at 06:14:24PM -0300, Lucas Faria Mendes wrote:
> Limit slave read/write operations to the allocated buffer size to
> prevent out-of-bounds access when a slave window is
> configured larger than its buffer.
> Treat zero-sized windows and invalid file positions as errors,
> and reject VME_SET_SLAVE requests that exceed the slave buffer.
> This makes the user access driver more robust and avoids
> silent EOF on invalid offsets.

Odd line-wrapping :(

How did you find this issue?  How was it tested?

thanks,

greg k-h