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can: j1939: fix memory leak if filters was set
author
Oleksij Rempel
<o.rempel@pengutronix.de>
Thu, 10 Oct 2019 10:50:31 +0000
(12:50 +0200)
committer
Marc Kleine-Budde
<mkl@pengutronix.de>
Mon, 4 Nov 2019 20:47:23 +0000
(21:47 +0100)
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@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
net/can/j1939/socket.c
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diff --git
a/net/can/j1939/socket.c
b/net/can/j1939/socket.c
index
5c6eabc
..
4d8ba70
100644
(file)
--- 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;