CVE-2021-47526 serial: liteuart: Fix NULL pointer dereference in ->remove()

In the Linux kernel, the following vulnerability has been resolved: serial: liteuart: Fix NULL pointer dereference in -remove drvdata has to be set in probe - otherwise platformgetdrvdata causes null pointer dereference BUG in remove...

CVE-2021-47526

CVE-2021-47526 is a Linux kernel vulnerability in the serial: liteuart driver causing a NULL pointer dereference in _remove() when drvdata isn’t set in _probe(). The root cause is missing drvdata assignment which leads to platform_get_drvdata() returning NULL in _remove(). The issue affects the L...