diff options
| author | Liu Jian <liujian56@huawei.com> | 2022-12-03 12:42:40 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-12-14 13:37:28 +0300 |
| commit | b8ce0e6f9f88a6bb49d291498377e61ea27a5387 (patch) | |
| tree | f13a22757f31ea1607200bafa0e1a5f0e73afabd | |
| parent | 16854177745a5648f8ec322353b432e18460f43a (diff) | |
| download | linux-b8ce0e6f9f88a6bb49d291498377e61ea27a5387.tar.xz | |
net: hisilicon: Fix potential use-after-free in hix5hd2_rx()
[ Upstream commit 433c07a13f59856e4585e89e86b7d4cc59348fab ]
The skb is delivered to napi_gro_receive() which may free it, after
calling this, dereferencing skb may trigger use-after-free.
Fixes: 57c5bc9ad7d7 ("net: hisilicon: add hix5hd2 mac driver")
Signed-off-by: Liu Jian <liujian56@huawei.com>
Link: https://lore.kernel.org/r/20221203094240.1240211-2-liujian56@huawei.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/net/ethernet/hisilicon/hix5hd2_gmac.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/hisilicon/hix5hd2_gmac.c b/drivers/net/ethernet/hisilicon/hix5hd2_gmac.c index c1aae0fca5e9..0a70fb979f0c 100644 --- a/drivers/net/ethernet/hisilicon/hix5hd2_gmac.c +++ b/drivers/net/ethernet/hisilicon/hix5hd2_gmac.c @@ -550,7 +550,7 @@ static int hix5hd2_rx(struct net_device *dev, int limit) skb->protocol = eth_type_trans(skb, dev); napi_gro_receive(&priv->napi, skb); dev->stats.rx_packets++; - dev->stats.rx_bytes += skb->len; + dev->stats.rx_bytes += len; next: pos = dma_ring_incr(pos, RX_DESC_NUM); } |