CVE-2021-47258: scsi: core: Fix error handling of scsi_host_alloc()

First published: Tue May 21 2024(Updated: )

In the Linux kernel, the following vulnerability has been resolved: scsi: core: Fix error handling of scsi_host_alloc() After device is initialized via device_initialize(), or its name is set via dev_set_name(), the device has to be freed via put_device(). Otherwise device name will be leaked because it is allocated dynamically in dev_set_name(). Fix the leak by replacing kfree() with put_device(). Since scsi_host_dev_release() properly handles IDA and kthread removal, remove special-casing these from the error handling as well.

Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67

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