Vulnerability CVE-2021-47258
Published: 2024-05-21

Description:
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.

 References:
https://git.kernel.org/stable/c/8958181c1663e24a13434448e7d6b96b5d04900a
https://git.kernel.org/stable/c/db08ce595dd64ea9859f7d088b51cbfc8e685c66
https://git.kernel.org/stable/c/2dc85045ae65b9302a1d2e2ddd7ce4c030153a6a
https://git.kernel.org/stable/c/79296e292d67fa7b5fb8d8c27343683e823872c8
https://git.kernel.org/stable/c/7a696ce1d5d16a33a6cd6400bbcc0339b2460e11
https://git.kernel.org/stable/c/45d83db4728127944b237c0c8248987df9d478e7
https://git.kernel.org/stable/c/66a834d092930cf41d809c0e989b13cd6f9ca006
Copyright 2026, cxsecurity.com

 

Back to Top