GPUCC-RIM-01: Verification pins RIM golden measurements (driver + VBIOS)¶
| Property | Value |
|---|---|
| Severity | high |
| Platform | NVIDIA GPU Confidential Computing |
| Lifecycle stage | attest |
| Trust boundary | attestation |
| Assurance | operator-declared |
| Mode | Passive: reads only the files and values you pass to the scan. |
How to fix¶
- Configure the verifier (local Verifier or NRAS policy) to pin the RIM golden measurements — the driver and VBIOS RIMs (GSP firmware is measured within the driver RIM) — and pin their golden values (expected_measurements) so a downgraded or arbitrary firmware is rejected even when the report is validly signed.
- Pin the driver + VBIOS golden measurements (and their values) in the verifier policy.
After the fix, scan again: the check should report PASS.
When it is not assessed¶
SKIP:
- No --gpu-verifier-policy specified; skipping check.
ERROR:
- Could not read/parse verifier policy or report: …
Scan inputs¶
The untrust scan options this check reads:
| Option | Description |
|---|---|
--gpu-attestation-report |
Path to a captured NVIDIA GPU attestation report (JSON). |
--gpu-verifier-policy |
Verifier policy JSON: pinned RIM measurements, cert chain, revocation. |
Permissions¶
None. The check reads only the files or values you pass to the scan.
Related¶
- Runtime detection
DET-G6(NVIDIA GPU CC): GPU driver or VBIOS changed
Generated from untrust 1.3.0 (commit 7ef462d9a0c3).