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Change History

In the Linux kernel, the following vulnerability has been resolved:

spi: cadence-quadspi: Implement refcount to handle unbind during busy

driver support indirect read and indirect write operation with
assumption no force device removal(unbind) operation. However
force device removal(removal) is still available to root superuser.

Unbinding driver during operation causes kernel crash. This changes
ensure driver able to handle such operation for indirect read and
indirect write by implementing refcount to track attached devices
to the controller and gracefully wait and until attached devices
remove operation completed before proceed with removal operation.

https://git.kernel.org/stable/c/7446284023e8ef694fb392348185349c773eefb3

https://git.kernel.org/stable/c/b7ec8a2b094a33d0464958c2cbf75b8f229098b0