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CVE-2023-53596 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: drivers: base: Free devm resources when unregistering a device In the current code, devres_release_all() only gets called if the device has a bus and has been probed. This leads to issues when using bus-less or driver-less devices where the device might never get freed if a managed resource holds a reference to the device. This is happening in the DRM framework for example. We should thus call devres_release_all() in the device_del() function to make sure that the device-managed actions are properly executed when the device is unregistered, even if it has neither a bus nor a driver. This is effectively the same change than commit 2f8d16a996da ("devres: release resources on device_del()") that got reverted by commit a525a3ddeaca ("driver core: free devres in device_release") over memory leaks concerns. This patch effectively combines the two commits mentioned above to release the resources both on device_del() and device_release() and get the best of both worlds.


Metrics

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CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/297992e5c63528e603666e36081836204fc36ec9 kernel.org
https://git.kernel.org/stable/c/3bcc4c2a096e8342c8c719e595ce15de212694dd kernel.org
https://git.kernel.org/stable/c/699fb50d99039a50e7494de644f96c889279aca3 kernel.org
https://git.kernel.org/stable/c/c8c426fae26086a0ca8ab6cc6da2de79810ec038 kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2023-53596
NVD Published Date:
10/04/2025
NVD Last Modified:
10/04/2025
Source:
kernel.org