linux-kernel - [PATCH 4.9 39/91] Bluetooth: Fix memory leak in hci_connect_le

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Message-Id: <20200111094859.807807687@linuxfoundation.org>
Date:   Sat, 11 Jan 2020 10:49:32 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Navid Emamdoost <navid.emamdoost@...il.com>,
        Marcel Holtmann <marcel@...tmann.org>
Subject: [PATCH 4.9 39/91] Bluetooth: Fix memory leak in hci_connect_le_scan

From: Navid Emamdoost <navid.emamdoost@...il.com>

commit d088337c38a5cd8f0230fbf2d514ff7672f9d0d3 upstream.

In the implementation of hci_connect_le_scan() when conn is added via
hci_conn_add(), if hci_explicit_conn_params_set() fails the allocated
memory for conn is leaked. Use hci_conn_del() to release it.

Fixes: f75113a26008 ("Bluetooth: add hci_connect_le_scan")
Signed-off-by: Navid Emamdoost <navid.emamdoost@...il.com>
Signed-off-by: Marcel Holtmann <marcel@...tmann.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 net/bluetooth/hci_conn.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -1054,8 +1054,10 @@ struct hci_conn *hci_connect_le_scan(str
 	if (!conn)
 		return ERR_PTR(-ENOMEM);
 
-	if (hci_explicit_conn_params_set(hdev, dst, dst_type) < 0)
+	if (hci_explicit_conn_params_set(hdev, dst, dst_type) < 0) {
+		hci_conn_del(conn);
 		return ERR_PTR(-EBUSY);
+	}
 
 	conn->state = BT_CONNECT;
 	set_bit(HCI_CONN_SCANNING, &conn->flags);