CVE-2021-47239 net: usb: fix possible use-after-free in smsc75xx_bind

In the Linux kernel, the following vulnerability has been resolved: net: usb: fix possible use-after-free in smsc75xxbind The commit 46a8b29c6306 "net: usb: fix memory leak in smsc75xxbind" fails to clean up the work scheduled in smsc75xxreset- smsc75xxsetmulticast, which leads to use-after-free ...