CVE-2026-80902

/// Technical description

In the Linux kernel, the following vulnerability has been resolved:

dmaengine: sun6i-dma: Fix reclaim descriptors while terminating DMA

When terminating DMA transfers, active descriptors are not properly

reclaimed. Only cyclic descriptors were handled, leaving non-cyclic

descriptors and their LLI chains to be permanently leaked.

Fix by using vchan_terminate_vdesc() which handles both cyclic and

non-cyclic descriptors by adding them to desc_terminated queue for

proper cleanup.

Add pchan->desc != pchan->done check to prevent double-adding completed

descriptors, which would corrupt the list.

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References