netdev - [PATCH 29/33] can: j1939: fix memory leak if filters was set

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Message-Id: <20191105163215.30194-30-mkl@pengutronix.de>
Date:   Tue,  5 Nov 2019 17:32:11 +0100
From:   Marc Kleine-Budde <mkl@...gutronix.de>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, linux-can@...r.kernel.org,
        kernel@...gutronix.de, Oleksij Rempel <o.rempel@...gutronix.de>,
        Marc Kleine-Budde <mkl@...gutronix.de>
Subject: [PATCH 29/33] can: j1939: fix memory leak if filters was set

From: Oleksij Rempel <o.rempel@...gutronix.de>

Filters array is coped from user space and linked to the j1939 socket.
On socket release this memory was not freed.

Fixes: 9d71dd0c7009 ("can: add support of SAE J1939 protocol")
Signed-off-by: Oleksij Rempel <o.rempel@...gutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@...gutronix.de>
---
 net/can/j1939/socket.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/can/j1939/socket.c b/net/can/j1939/socket.c
index 5c6eabcb5df1..4d8ba701e15d 100644
--- a/net/can/j1939/socket.c
+++ b/net/can/j1939/socket.c
@@ -580,6 +580,7 @@ static int j1939_sk_release(struct socket *sock)
 		j1939_netdev_stop(priv);
 	}
 
+	kfree(jsk->filters);
 	sock_orphan(sk);
 	sock->sk = NULL;
 
-- 
2.24.0.rc1