CVE-2021-47013

In the Linux kernel, the following vulnerability has been resolved: net:emac/emac-mac: Fix a use after free in emacmactxbufsend In emacmactxbufsend, it calls emactxfilltpd..,skb,... If some error happens in emactxfilltpd, the skb will be freed via devkfreeskbskb in error branch of emactxfilltpd...