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Message-ID: <20190130102645.17200-1-yuehaibing@huawei.com>
Date: Wed, 30 Jan 2019 18:26:45 +0800
From: YueHaibing <yuehaibing@...wei.com>
To: <dsterba@...e.com>, <gregkh@...uxfoundation.org>, <jslaby@...e.com>
CC: <linux-kernel@...r.kernel.org>, <jikos@...nel.org>,
YueHaibing <yuehaibing@...wei.com>
Subject: [PATCH -next] 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 <yuehaibing@...wei.com>
---
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 b0baa4c..1e21ae3 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 -ENOMEM;
ver_packet->header.length = sizeof(struct tl_setup_get_version_qry);
/*
--
2.7.0
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