From 7dd50e205b3348dc7784efbdf85723551de64a25 Mon Sep 17 00:00:00 2001
From: YueHaibing <yuehaibing@huawei.com>
Date: Wed, 30 Jan 2019 18:30:51 +0800
Subject: [PATCH] tty: ipwireless: Fix potential NULL pointer dereference
Git-commit: 7dd50e205b3348dc7784efbdf85723551de64a25
Patch-mainline: v5.1-rc1
References: bsc#1051510
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 <yuehaibing@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/tty/ipwireless/hardware.c | 2 ++
1 file changed, 2 insertions(+)
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);
/*
--
2.16.4