diff options
| author | Ziyang Xuan <william.xuanziyang@huawei.com> | 2022-11-10 14:14:37 +0800 |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2022-11-24 15:43:37 +0100 |
| commit | 8fa452cfafed521aaf5a18c71003fe24b1ee6141 (patch) | |
| tree | f50e091123c8f50cf3704a14efd73ef4588b9875 | |
| parent | ad17c2a3f11b0f6b122e7842d8f7d9a5fcc7ac63 (diff) | |
| download | v9fs-8fa452cfafed521aaf5a18c71003fe24b1ee6141.tar.gz | |
can: can327: can327_feed_frame_to_netdev(): fix potential skb leak when netdev is down
In can327_feed_frame_to_netdev(), it did not free the skb when netdev
is down, and all callers of can327_feed_frame_to_netdev() did not free
allocated skb too. That would trigger skb leak.
Fix it by adding kfree_skb() in can327_feed_frame_to_netdev() when netdev
is down. Not tested, just compiled.
Fixes: 43da2f07622f ("can: can327: CAN/ldisc driver for ELM327 based OBD-II adapters")
Signed-off-by: Ziyang Xuan <william.xuanziyang@huawei.com>
Link: https://lore.kernel.org/all/20221110061437.411525-1-william.xuanziyang@huawei.com
Reviewed-by: Max Staudt <max@enpas.org>
Cc: stable@vger.kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
| -rw-r--r-- | drivers/net/can/can327.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/can/can327.c b/drivers/net/can/can327.c index 0941977807761..ed3d0b8989a07 100644 --- a/drivers/net/can/can327.c +++ b/drivers/net/can/can327.c @@ -263,8 +263,10 @@ static void can327_feed_frame_to_netdev(struct can327 *elm, struct sk_buff *skb) { lockdep_assert_held(&elm->lock); - if (!netif_running(elm->dev)) + if (!netif_running(elm->dev)) { + kfree_skb(skb); return; + } /* Queue for NAPI pickup. * rx-offload will update stats and LEDs for us. |