Memory Leak in Linux Kernel's OV2740 Media Driver

CVE-2023-53349

What is CVE-2023-53349?

A memory leak has been identified in the OV2740 media driver of the Linux kernel. Specifically, the function ov2740_init_controls() fails to release all allocated resources when encountering errors during initialization. This oversight can result in unreferenced objects persisting in memory. The issue becomes evident when utilizing the media/i2c/ov2740.c with a BPF mock device, leading to potential memory inefficiencies and increased resource consumption. Implementing the v4l2_ctrl_handler_free() function is a critical step to mitigate this condition and ensure robust memory management.

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