SEV-SNP Physical Memory Aliasing
Summary
Researchers have reported a method for privileged attackers with physical access to a motherboard to potentially compromise confidentiality and integrity of AMD Secure Encrypted Virtualization – Secure Nesting Paging (SEV-SNP) guests.
AMD does not plan to release any mitigations in response to this report because the reported exploit is outside the scope of the published threat model for SEV-SNP, as detailed in Table 1 of the AMD SEV-SNP technical paper.
Acknowledgement
AMD thanks the following for reporting this issue and engaging in coordinated vulnerability disclosure.
Jesse De Meulemeester (COSIC, KU Leuven)
Luca Wilke (University of Lubeck)
David Oswald (University of Birmingham)
Thomas Eisenbarth (University of Lubeck)
Ingrid Verbauwhede (COSIC, KU Leuven)
Jo Van Bulck (DistriNet, KU Leuven)
Revisions
| Revision Date | Description |
| 2025-09-30 | Initial publication |
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