Linux Kernel Vulnerability in DMA Address Management

CVE-2026-80884

What is CVE-2026-80884?

A vulnerability in the Linux kernel has been identified related to incorrect handling of Direct Memory Access (DMA) addresses. This issue arises when the DMA API's dma_free_attrs function does not receive the original DMA handle that was returned during allocation. Modifying this handle can lead to improper resource management, potentially allowing unauthorized access to system resources. This flaw emphasizes the importance of maintaining the integrity of DMA address management within kernel operations.

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