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Lv Yunlong 6d72e7c767 net:emac/emac-mac: Fix a use after free in emac_mac_tx_buf_send
In emac_mac_tx_buf_send, it calls emac_tx_fill_tpd(..,skb,..).
If some error happens in emac_tx_fill_tpd(), the skb will be freed via
dev_kfree_skb(skb) in error branch of emac_tx_fill_tpd().
But the freed skb is still used via skb->len by netdev_sent_queue(,skb->len).

As i observed that emac_tx_fill_tpd() haven't modified the value of skb->len,
thus my patch assigns skb->len to 'len' before the possible free and
use 'len' instead of skb->len later.

Fixes: b9b17debc6 ("net: emac: emac gigabit ethernet controller driver")
Signed-off-by: Lv Yunlong <lyl2019@mail.ustc.edu.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-04-26 13:07:30 -07:00
arch arm64: dts: rockchip: Remove unnecessary reset in rk3328.dtsi 2021-04-26 12:59:37 -07:00
block
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Documentation dt-bindings: net: convert rockchip-dwmac to json-schema 2021-04-26 12:59:37 -07:00
drivers net:emac/emac-mac: Fix a use after free in emac_mac_tx_buf_send 2021-04-26 13:07:30 -07:00
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include net: Fix typo in comment about ancillary data 2021-04-26 13:04:19 -07:00
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net net/sched: act_ct: fix wild memory access when clearing fragments 2021-04-26 13:06:39 -07:00
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Linux kernel
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