stable inclusion from stable-v4.19.269 commit 3a4eddd1cb023a71df4152fcc76092953e6fe95a category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IAYRDH CVE: CVE-2022-48960 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=... ------------------------------------------------- [ 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> Signed-off-by: Liu Jian <liujian56@huawei.com> --- drivers/net/ethernet/hisilicon/hix5hd2_gmac.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/hisilicon/hix5hd2_gmac.c b/drivers/net/ethernet/hisilicon/hix5hd2_gmac.c index ef54ee300863..c95643a34e1e 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); } -- 2.34.1