Source · Tier A · Peer-reviewedSource · Fabricked: Misconfiguring Infinity Fabric to Break AMD SEV-SNP
Fabricked: Misconfiguring Infinity Fabric to Break AMD SEV-SNP
B. Schlüter, C. Wech, S. Shinde. 2026. 35th USENIX Security Symposium (USENIX Security '26).
| Original | https://www.usenix.org/conference/usenixsecurity26/presentation/schlueter-1 |
|---|---|
| Version | USENIX Security '26 presentation page (pp. 5613–5632, August 2026) and the paper PDF (https://www.shwetashinde.org/publications/fabricked_usenix26.pdf), read on 2026-09-25. The authors' site (https://fabricked-attack.github.io/) could not be read by the fetch tool. |
| Accessed | 2026-09-25 |
| Note | Independent attack paper (ETH Zurich). A software adversary that controls the hypervisor and UEFI firmware misconfigures Infinity Fabric routing so that writes by the AMD Secure Processor during SEV-SNP initialisation go astray, leaving the system falsely initialised. Demonstrated on a Zen 5 EPYC 9135: arbitrary read and write in the victim CVM, debug mode enabled after attestation, and forged attestation reports. The authors could not test Zen 3 or Zen 4. AMD's bulletin is S-3128. |