net: hns3: fix for use-after-free when setting ring parameter

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In hns3_set_ringparam, hns3_uninit_all_ring frees the
memory pointed by priv->ring_data[i].ring, and
hns3_change_all_ring_bd_num use that pointer without mallocing,
which will cause a use-after-free problem.

The patch fixes it by not freeing the memory in
hns3_uninit_all_ring, and uses hns3_put_ring_config to free it
when necessary.

Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Yunsheng Lin 2018-03-09 10:37:00 +08:00 • committed by David S. Miller

parent f31c1ba668

commit ec77789032

1 changed files with 5 additions and 5 deletions

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drivers/net/ethernet/hisilicon/hns3/hns3_enet.c

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