From 7dd50e205b3348dc7784efbdf85723551de64a25 Mon Sep 17 00:00:00 2001 From: YueHaibing Date: Wed, 30 Jan 2019 18:30:51 +0800 Subject: tty: ipwireless: Fix potential NULL pointer dereference There is a potential NULL pointer dereference in case alloc_ctrl_packet() fails and returns NULL. Fixes: 099dc4fb6265 ("ipwireless: driver for PC Card 3G/UMTS modem") Signed-off-by: YueHaibing Signed-off-by: Greg Kroah-Hartman --- drivers/tty/ipwireless/hardware.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/tty') diff --git a/drivers/tty/ipwireless/hardware.c b/drivers/tty/ipwireless/hardware.c index b0baa4ce10f9..6bbf35682d53 100644 --- a/drivers/tty/ipwireless/hardware.c +++ b/drivers/tty/ipwireless/hardware.c @@ -1516,6 +1516,8 @@ static void ipw_send_setup_packet(struct ipw_hardware *hw) sizeof(struct ipw_setup_get_version_query_packet), ADDR_SETUP_PROT, TL_PROTOCOLID_SETUP, TL_SETUP_SIGNO_GET_VERSION_QRY); + if (!ver_packet) + return; ver_packet->header.length = sizeof(struct tl_setup_get_version_qry); /* -- cgit v1.2.3-59-g8ed1b