On Wed, Dec 09, 2020 at 11:42:21AM +0100, Johan Hovold wrote:
> Add an interface-number sanity check before testing the device flags to
> avoid relying on undefined behaviour when left shifting in case a device
> uses an interface number greater than or equal to BITS_PER_LONG (i.e. 64
> or 32).
>
> Reported-by: syzbot+8881b478dad0a7971...@syzkaller.appspotmail.com
> Fixes: c3a65808f04a ("USB: serial: option: reimplement interface masking")
> Cc: sta...@vger.kernel.org
> Signed-off-by: Johan Hovold <jo...@kernel.org>
Reviewed-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
