USB: serial: io_ti: fix NULL-deref in interrupt callback

commit 0b1d250afb upstream.

Fix a NULL-pointer dereference in the interrupt callback should a
malicious device send data containing a bad port number by adding the
missing sanity check.

Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johan Hovold 2017-03-06 17:36:37 +01:00 • committed by Greg Kroah-Hartman
commit 449b0bb237