CVE-2021-47439

The CVE-2021-47439 issue concerns the Linux kernel’s net: dsa: microchip ksz driver. Root cause: during rmmod, ksz_switch_remove unregisters a switch while a non-zero mib_interval can cause ksz_mac_link_down to reschedule mib_read_work, leading to a null pointer access to dp->slave after unreg...