Re: [PATCH v15 17/19] media: uvcvideo: Add sanity check to uvc_ioctl_xu_ctrl_map

[Ricardo Ribalda]

On Thu, 14 Nov 2024 at 20:11, Ricardo Ribalda <ribalda@xxxxxxxxxxxx> wrote:
>
> Do not process unknown data types.
>
> Signed-off-by: Ricardo Ribalda <ribalda@xxxxxxxxxxxx>
> ---
>  drivers/media/usb/uvc/uvc_v4l2.c | 6 ++++++
>  1 file changed, 6 insertions(+)
>
> diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c
> index 5000c74271e0..4c88dab15554 100644
> --- a/drivers/media/usb/uvc/uvc_v4l2.c
> +++ b/drivers/media/usb/uvc/uvc_v4l2.c
> @@ -106,6 +106,12 @@ static int uvc_ioctl_xu_ctrl_map(struct uvc_video_chain *chain,
>         struct uvc_control_mapping *map;
>         int ret;
>
> +       if (xmap->data_type > UVC_CTRL_DATA_TYPE_BITMASK) {
> +               uvc_dbg(chain->dev, CONTROL,
> +                       "Unsupported UVC data type %u\n", xmap->data_type);
> +               return -ENOTTY;
This should probably be -EINVAL

I am fixing it on the next version

> +       }
> +
>         map = kzalloc(sizeof(*map), GFP_KERNEL);
>         if (map == NULL)
>                 return -ENOMEM;
>
> --
> 2.47.0.338.g60cca15819-goog
>


-- 
Ricardo Ribalda