CyberRota Analysis
AI-GeneratedThe vulnerability affects 13 platform drivers in the Linux kernel that rely on the presence of an ACPI companion object, which may not be properly verified during device probing. This oversight could lead to improper device matching, potentially causing system instability or unexpected behavior. Linux system administrators and developers working with ACPI devices should prioritize addressing this issue to ensure reliable driver functionality and maintain system integrity.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: ACPI: driver: Check ACPI_COMPANION() against NULL during probe Since every platform driver can be forced to match a device that doesn't match its list of device IDs because of device_match_driver_override(), platform drivers that rely on the existence of a device's ACPI companion object should verify its presence. Accordingly, add requisite ACPI_COMPANION() or ACPI_HANDLE() checks against NULL to 13 platform drivers handling core ACPI devices. Also change the value returned by the ACPI thermal zone driver when the device's ACPI companion is not present to -ENODEV for consistency with the other drivers.
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Other vulnerabilities affecting the same vendor(s)