DMA Engine Vulnerability in Linux Kernel by Vendor NXP Semiconductors

CVE-2026-46255

What is CVE-2026-46255?

The DMA engine component in the Linux kernel has a flaw in its clock management during driver removal. Specifically, the fsl-edma driver incorrectly attempts to disable clocks that have already been enabled and cleaned up by the kernel's resource manager. This leads to unnecessary warnings during the removal process, indicating that clocks are already disabled or unprepared. The issue arises from an erroneous call to disable clocks that were automatically managed, requiring the removal of the unnecessary function to resolve these warnings efficiently.

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