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

spi: lpspi: Avoid potential use-after-free in probe()

fsl_lpspi_probe() is allocating/disposing memory manually with
spi_alloc_host()/spi_alloc_target(), but uses
devm_spi_register_controller(). In case of error after the latter call the
memory will be explicitly freed in the probe function by
spi_controller_put() call, but used afterwards by "devm" management outside
probe() (spi_unregister_controller() <- devm_spi_unregister() below).

Unable to handle kernel NULL pointer dereference at virtual address 0000000000000070
...
Call trace:
 kernfs_find_ns
 kernfs_find_and_get_ns
 sysfs_remove_group
 sysfs_remove_groups
 device_remove_attrs
 device_del
 spi_unregister_controller
 devm_spi_unregister
 release_nodes
 devres_release_all
 really_probe
 driver_probe_device
 __device_attach_driver
 bus_for_each_drv
 __device_attach
 device_initial_probe
 bus_probe_device
 deferred_probe_work_func
 process_one_work
 worker_thread
 kthread
 ret_from_fork

kernel.org https://git.kernel.org/stable/c/1543418e82789cc383cd36d41469983c64e3fc7f [No types assigned]

kernel.org https://git.kernel.org/stable/c/2ae0ab0143fcc06190713ed81a6486ed0ad3c861 [No types assigned]

kernel.org https://git.kernel.org/stable/c/996ce839606afd0fef91355627868022aa73eb68 [No types assigned]

kernel.org https://git.kernel.org/stable/c/da83ed350e4604b976e94239b08d8e2e7eaee7ea [No types assigned]