GPUCC-DMA-01: CPU<->GPU DMA is encrypted over an SPDM secure session¶
| Property | Value |
|---|---|
| Severity | high |
| Platform | NVIDIA GPU Confidential Computing |
| Lifecycle stage | runtime |
| Trust boundary | memory |
| Assurance | report-derived |
| Mode | Passive: reads only the files and values you pass to the scan. |
What a failure enables¶
- Model inputs and weights readable by the host
What it checks¶
It passes when:
- CPU<->GPU DMA is encrypted over an established SPDM session.
How to fix¶
- Run in CC-On so the driver establishes the SPDM session and all PCIe traffic uses encrypted bounce buffers; do not disable the secure session or use an unprotected DMA path.
- Run in CC-On to establish the SPDM secure session.
After the fix, scan again: the check should report PASS.
When it is not assessed¶
SKIP:
- No --gpu-attestation-report specified; skipping check.
ERROR:
- Could not read/parse attestation report: …
Scan inputs¶
The untrust scan options this check reads:
| Option | Description |
|---|---|
--gpu-attestation-report |
Path to a captured NVIDIA GPU attestation report (JSON). |
Permissions¶
None. The check reads only the files or values you pass to the scan.
Generated from untrust 1.3.0 (commit 7ef462d9a0c3).