CVE-2024-26866

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