Improper Data Initialization in Linux Kernel Affecting Comedi Subdevices

CVE-2025-38478

What is CVE-2025-38478?

This vulnerability in the Linux kernel affects the initialization of data for instructions that write to Comedi subdevices. Specifically, certain handlers do not properly initialize all data elements, potentially leading to the use of uninitialized data when these handlers are executed. This could cause unpredictable behavior or expose sensitive information when subdevice instructions are processed. The issue has been addressed by ensuring that the minimum required elements are initialized to zero before being used by the instruction handlers, thereby enhancing the overall robustness of the system.

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