GPUCC-FAILOPEN-01: The verifier fails closed when attestation can't be checked¶
| 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. |
What a failure enables¶
- An unverified GPU trusted for the life of the workload
What it checks¶
It passes when:
- The verifier fails closed on attestation-path failure.
How to fix¶
- Fail closed: on any attestation error/timeout, deny key/data release and refuse to run the workload. Never treat 'could not verify' as 'verified'.
- Fail closed: deny key/data release on any attestation error or outage.
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: …
Scan inputs¶
The untrust scan options this check reads:
| Option | Description |
|---|---|
--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.
Generated from untrust 1.3.0 (commit 7ef462d9a0c3).