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| author | Liu Jian <liujian56@huawei.com> | 2022-12-03 17:42:39 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-12-14 11:24:34 +0100 |
| commit | 3501da8eb6d0f5f114a09ec953c54423f6f35885 (patch) | |
| tree | bc15c0c6e1f5826043ddb9f703d9edea0228d817 | |
| parent | 6b37f0dc0638d13a006f2f24d2f6ca61e83bc714 (diff) | |
| download | linux-3501da8eb6d0f5f114a09ec953c54423f6f35885.tar.gz linux-3501da8eb6d0f5f114a09ec953c54423f6f35885.tar.bz2 linux-3501da8eb6d0f5f114a09ec953c54423f6f35885.zip | |
net: hisilicon: Fix potential use-after-free in hisi_femac_rx()
[ Upstream commit 4640177049549de1a43e9bc49265f0cdfce08cfd ]
The skb is delivered to napi_gro_receive() which may free it, after
calling this, dereferencing skb may trigger use-after-free.
Fixes: 542ae60af24f ("net: hisilicon: Add Fast Ethernet MAC driver")
Signed-off-by: Liu Jian <liujian56@huawei.com>
Link: https://lore.kernel.org/r/20221203094240.1240211-1-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/hisi_femac.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/hisilicon/hisi_femac.c b/drivers/net/ethernet/hisilicon/hisi_femac.c index ced185962ef8..77f61167e238 100644 --- a/drivers/net/ethernet/hisilicon/hisi_femac.c +++ b/drivers/net/ethernet/hisilicon/hisi_femac.c @@ -295,7 +295,7 @@ static int hisi_femac_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 = (pos + 1) % rxq->num; if (rx_pkts_num >= limit) |