In the Linux kernel, the following vulnerability has been resolved:
mtk-sd: Prevent memory corruption from DMA map failure
If msdcpreparedata() fails to map the DMA region, the request is not prepared for data receiving, but msdcstartdata() proceeds the DMA with previous setting. Since this will lead a memory corruption, we have to stop the request operation soon after the msdcpreparedata() fails to prepare it.