linux-kernel - [PATCH 4.4 151/312] NFC: nci: memory leak in nci_core_conn

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Message-Id: <20200508123135.083649102@linuxfoundation.org>
Date:   Fri,  8 May 2020 14:32:22 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Christophe Ricard <christophe-h.ricard@...com>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        Samuel Ortiz <sameo@...ux.intel.com>
Subject: [PATCH 4.4 151/312] NFC: nci: memory leak in nci_core_conn_create()

From: Dan Carpenter <dan.carpenter@...cle.com>

commit c6dc65d885b98898bf287aaf44e020077b41769f upstream.

I've moved the check for "number_destination_params" forward
a few lines to avoid leaking "cmd".

Fixes: caa575a86ec1 ('NFC: nci: fix possible crash in nci_core_conn_create')

Acked-by: Christophe Ricard <christophe-h.ricard@...com>
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Samuel Ortiz <sameo@...ux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 net/nfc/nci/core.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/net/nfc/nci/core.c
+++ b/net/nfc/nci/core.c
@@ -610,14 +610,14 @@ int nci_core_conn_create(struct nci_dev
 	struct nci_core_conn_create_cmd *cmd;
 	struct core_conn_create_data data;
 
+	if (!number_destination_params)
+		return -EINVAL;
+
 	data.length = params_len + sizeof(struct nci_core_conn_create_cmd);
 	cmd = kzalloc(data.length, GFP_KERNEL);
 	if (!cmd)
 		return -ENOMEM;
 
-	if (!number_destination_params)
-		return -EINVAL;
-
 	cmd->destination_type = destination_type;
 	cmd->number_destination_params = number_destination_params;
 	memcpy(cmd->params, params, params_len);