CVE-2026-80902

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.

References

• https://git.kernel.org/stable/c/004a7a02982bed0a727a4ac7be400f00f353e7a2
• https://git.kernel.org/stable/c/1ccc5c059d067c5358682ad5352e7d7e9239ed9b
• https://git.kernel.org/stable/c/27806fe7b9701af0963dcd510e30e7d0cc314c43
• https://git.kernel.org/stable/c/9086b488f2737d5dcee86852b83f2059f1cdfabf
• https://git.kernel.org/stable/c/ab1150115e68a46b687eb38c1ab92782018c9f2c