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| author |   Oleksij Rempel <o.rempel@pengutronix.de> | 2019-11-05 11:07:08 +0100 |
|---|---|---|
| committer |   Marc Kleine-Budde <mkl@pengutronix.de> | 2019-11-13 10:42:34 +0100 |
| commit | c48c8c1e2e81e71a0f13b83cc5124333f3750064 (patch) | |
| tree | 14c1cad59500c38b1f03b4d0ca840b8753c8bcff /net | |
| parent | can: j1939: move j1939_priv_put() into sk_destruct callback (diff) | |
| download | linux-dev-c48c8c1e2e81e71a0f13b83cc5124333f3750064.tar.xz linux-dev-c48c8c1e2e81e71a0f13b83cc5124333f3750064.zip | |
can: j1939: main: j1939_ndev_to_priv(): avoid crash if can_ml_priv is NULL
This patch avoids a NULL pointer deref crash if ndev->ml_priv is NULL.
Reported-by: syzbot+95c8e0d9dffde15b6c5c@syzkaller.appspotmail.com
Fixes: 9d71dd0c7009 ("can: add support of SAE J1939 protocol")
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Diffstat (limited to 'net')
| -rw-r--r-- | net/can/j1939/main.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/can/j1939/main.c b/net/can/j1939/main.c index def2f813ffce..8dc935dc2e54 100644 --- a/net/can/j1939/main.c +++ b/net/can/j1939/main.c @@ -207,6 +207,9 @@ static inline struct j1939_priv *j1939_ndev_to_priv(struct net_device *ndev) { struct can_ml_priv *can_ml_priv = ndev->ml_priv; + if (!can_ml_priv) + return NULL; + return can_ml_priv->j1939_priv; } |