In the Linux kernel, the following vulnerability has been resolved: dmaengine: dw-edma: eDMA: Add sync read before starting the DMA transfer in remote setup The Linked list element and pointer are not stored in the same memory as the eDMA controller register. If the doorbell register is toggled before the full write of the linked list a race condition error will occur. In remote setup we can only use a readl to the memory to assure the full write has occurred.
https://git.kernel.org/stable/c/f396b4df27cfe01a99f4b41f584c49e56477be3a
https://git.kernel.org/stable/c/d24fe6d5a1cfdddb7a9ef56736ec501c4d0a5fd3
https://git.kernel.org/stable/c/bbcc1c83f343e580c3aa1f2a8593343bf7b55bba