net: cdc_eem: fix tx fixup skb leak
when usbnet transmit a skb, eem fixup it in eem_tx_fixup(), if skb_copy_expand() failed, it return NULL, usbnet_start_xmit() will have no chance to free original skb. fix it by free orginal skb in eem_tx_fixup() first, then check skb clone status, if failed, return NULL to usbnet. Fixes: 9f722c09 ("usbnet: CDC EEM support (v5)") Signed-off-by:Linyu Yuan <linyyuan@codeaurora.org> Reviewed-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
David S. Miller <davem@davemloft.net>
parent
bc39f679
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