linux-kernel - [PATCH] NFC: fix resource leak when target index is invalid

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Date:   Thu, 21 Jan 2021 07:27:48 -0800
From:   Pan Bian <bianpan2016@....com>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Marc Kleine-Budde <mkl@...gutronix.de>,
        Qingyu Li <ieatmuttonchuan@...il.com>,
        Samuel Ortiz <sameo@...ux.intel.com>,
        "John W. Linville" <linville@...driver.com>
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Pan Bian <bianpan2016@....com>
Subject: [PATCH] NFC: fix resource leak when target index is invalid

Goto to the label put_dev instead of the label error to fix potential
resource leak on path that the target index is invalid.

Fixes: c4fbb6515a4d ("NFC: The core part should generate the target index")
Signed-off-by: Pan Bian <bianpan2016@....com>
---
 net/nfc/rawsock.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/nfc/rawsock.c b/net/nfc/rawsock.c
index 955c195ae14b..9c7eb8455ba8 100644
--- a/net/nfc/rawsock.c
+++ b/net/nfc/rawsock.c
@@ -105,7 +105,7 @@ static int rawsock_connect(struct socket *sock, struct sockaddr *_addr,
 	if (addr->target_idx > dev->target_next_idx - 1 ||
 	    addr->target_idx < dev->target_next_idx - dev->n_targets) {
 		rc = -EINVAL;
-		goto error;
+		goto put_dev;
 	}
 
 	rc = nfc_activate_target(dev, addr->target_idx, addr->nfc_protocol);
-- 
2.17.1