Device Resource Management Issue in Linux Kernel Affects Networking Drivers

CVE-2023-53308

What is CVE-2023-53308?

A flaw has been identified in the Linux kernel network driver handling, specifically in the mechanism for managing device removal. When the pm_runtime_get() function fails, rather than returning an error and halting the device removal process, the driver core continues to execute, leading to potential resource leaks. Particularly concerning is the premature freeing of device resources, which if accessed later can lead to system crashes due to the absence of necessary register mappings. This vulnerability underscores the importance of robust error handling in device driver code to prevent operational failures and ensure system stability.

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