13 Jan
2020
13 Jan
'20
6:25 p.m.
On Mon, Jan 13, 2020 at 06:22:13PM +0100, Johan Hovold wrote:
The driver was issuing synchronous uninterruptible control requests without using a timeout. This could lead to the driver hanging on open() or tiocmset() due to a malfunctioning (or malicious) device until the device is physically disconnected.
The USB upper limit of five seconds per request should be more than enough.
Fixes: 309a057932ab ("USB: opticon: add rts and cts support") Cc: stable stable@vger.kernel.org # 2.6.39 Cc: Martin Jansen martin.jansen@opticon.com Signed-off-by: Johan Hovold johan@kernel.org
Reviewed-by: Greg Kroah-Hartman gregkh@linuxfoundation.org