Key Facts
DDRop researchers describe a hardware interposer that drops DDR5 memory writes, causing a system to use stale data. They state that the technique affects confidential-computing technologies including Intel TDX, Intel Scalable SGX, and AMD SEV-SNP.
Technical Details
The researchers state that DDRop induces and suppresses a DDR5 parity error so a memory module discards a write without the processor learning that it was dropped. Their public repository includes hardware designs, firmware, and proof-of-concept code.
Impact & Mitigation
The stated attack model requires physical access to the server memory path and is not a remote software vulnerability. Organizations using confidential-computing workloads should assess physical platform trust assumptions and follow vendor guidance for affected technologies.