netdev - [PATCH] net: mwifiex: fix a missing check of ssid

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Date:   Sat, 23 Mar 2019 17:33:39 -0500
From:   Kangjie Lu <kjlu@....edu>
To:     kjlu@....edu
Cc:     pakki001@....edu, Amitkumar Karwar <amitkarwar@...il.com>,
        Nishant Sarmukadam <nishants@...vell.com>,
        Ganapathi Bhat <gbhat@...vell.com>,
        Xinming Hu <huxinming820@...il.com>,
        Kalle Valo <kvalo@...eaurora.org>,
        "David S. Miller" <davem@...emloft.net>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] net: mwifiex: fix a missing check of ssid

sme->ssid may be invalid and thus should be checked.

The fix adds such a check and returns an error if it is invalid.

Signed-off-by: Kangjie Lu <kjlu@....edu>
---
 drivers/net/wireless/marvell/mwifiex/cfg80211.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/net/wireless/marvell/mwifiex/cfg80211.c b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
index c46f0a54a0c7..a46820cf609f 100644
--- a/drivers/net/wireless/marvell/mwifiex/cfg80211.c
+++ b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
@@ -2343,6 +2343,12 @@ mwifiex_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
 	struct mwifiex_adapter *adapter = priv->adapter;
 	int ret;
 
+	if (!sme->ssid) {
+		mwifiex_dbg(adapter, ERROR,
+			    "%s: Invalid ssid\n", dev->name);
+		return -EOPNOTSUPP;
+	}
+
 	if (GET_BSS_ROLE(priv) != MWIFIEX_BSS_ROLE_STA) {
 		mwifiex_dbg(adapter, ERROR,
 			    "%s: reject infra assoc request in non-STA role\n",
-- 
2.17.1