On Sun, Feb 20, 2011 at 04:49:53AM -0800, Dan Carpenter wrote:
> We should check that optTxFrmCmd.optIEDataLen isn't too large before we
> copy it into the data buffer.
>
> Signed-off-by: Dan Carpenter <[email protected]>
>
> diff --git a/drivers/staging/ath6kl/os/linux/ioctl.c
> b/drivers/staging/ath6kl/os/linux/ioctl.c
> index 17ba543..9a9a324 100644
> --- a/drivers/staging/ath6kl/os/linux/ioctl.c
> +++ b/drivers/staging/ath6kl/os/linux/ioctl.c
> @@ -3153,6 +3153,11 @@ int ar6000_ioctl(struct net_device *dev, struct ifreq
> *rq, int cmd)
> break;
> }
>
> + if (optTxFrmCmd.optIEDataLen > MAX_OPT_DATA_LEN) {
> + ret = -EINVAL;
> + break;
> + }
> +
> if (copy_from_user(data, userdata+sizeof(WMI_OPT_TX_FRAME_CMD) -
> 1,
> optTxFrmCmd.optIEDataLen)) {
> ret = -EFAULT;
Acked-by: Vipin Mehta <[email protected]>
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