Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Date:   Thu, 1 Dec 2022 13:28:53 +0100
From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     Szymon Heidrich <szymon.heidrich@gmail.com>
Cc:     laurent.pinchart@ideasonboard.com, Felipe Balbi <balbi@kernel.org>,
        linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Prevent buffer overflow in UVC Gadget setup handler
Message-ID: <Y4ieBScmqVbZMrf9@kroah.com>
References: <20221201122141.8739-1-szymon.heidrich@gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20221201122141.8739-1-szymon.heidrich@gmail.com>
Precedence: bulk

On Thu, Dec 01, 2022 at 01:21:41PM +0100, Szymon Heidrich wrote:
> Setup function uvc_function_setup permits control transfer
> requests with up to 64 bytes of payload (UVC_MAX_REQUEST_SIZE),
> data stage handler for OUT transfer uses memcpy to copy req->actual
> bytes to uvc_event->data.data array of size 60. This may result
> in an overflow of 4 bytes.
> 
> Signed-off-by: Szymon Heidrich <szymon.heidrich@gmail.com>
> ---
>  drivers/usb/gadget/function/f_uvc.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)

What commit id does this fix?  Is it needed for stable kernels?

thanks,

greg k-h