Memory Management Issues in Linux Kernel Affecting Device Resources

CVE-2023-53596

What is CVE-2023-53596?

A vulnerability has been identified in the Linux kernel related to the management of resources associated with unregistered devices. The issue arises when device resources are not properly released if a device does not have an associated bus or driver. This can lead to memory leaks, particularly within the Direct Rendering Manager (DRM) framework, where devices may remain allocated despite being unregistered. To address this flaw, an update ensures that resources are released in both device_del() and device_release() functions. This effectively combines prior solutions to optimize memory management and resource cleanup for devices, enhancing stability and reliability.

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