DRAM controller exploit breaks CPU memory isolation

Security researcher Christopher Domas released an open-source project, 'skitter-creek-bath-salts', that bypasses CPU privilege boundaries by manipulating DRAM controller translation registers.

The exploit allows unprivileged software to access protected memory enclaves, such as System Management Mode RAM, by altering physical-to-DRAM address mappings at the hardware logic level.

The vulnerability primarily affects older AMD Family 14h, 15h, and 16h processors, highlighting a critical architectural blind spot where upstream security checks fail to validate downstream memory controller logic.