USB: serial: io_ti: fix NULL-deref in interrupt callback
authorJohan Hovold <johan@kernel.org>
Mon, 6 Mar 2017 16:36:37 +0000 (17:36 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 18 Mar 2017 11:09:58 +0000 (19:09 +0800)
commite71c7bad68449a59e4e411257420916397cdff85
tree31a57858b7cb73992902bb4f7ac41a751dde05e9
parent6498086195b9d6939293d35e93b804228158eb7f
USB: serial: io_ti: fix NULL-deref in interrupt callback

commit 0b1d250afb8eb9d65afb568bac9b9f9253a82b49 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: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/serial/io_ti.c