Describe CVE-2021-47311.
What is CVE-2021-47311?
In the Linux kernel, the following vulnerability has been resolved:

net: qcom/emac: fix UAF in emac_remove

adpt is netdev private data and it cannot be
used after free_netdev() call. Using adpt after free_netdev()
can cause UAF bug. Fix it by moving free_netdev() at the end of the
function..