CVE-2026-80902

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.