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Quiet Scans Validation (Reachability + VEX + Dedup)

Module

Scanner

Status

VERIFIED

Description

Reachability gates and VEX candidate emission are tested and integrated into the SmartDiff pipeline for quieter scan results.

Implementation Details

  • Reachability Gate Bridge:
    • src/Scanner/__Libraries/StellaOps.Scanner.SmartDiff/Detection/ReachabilityGateBridge.cs - ReachabilityGateBridge integrates reachability gate verdicts into the SmartDiff pipeline to suppress unreachable findings
  • VEX Candidate Emission:
    • src/Scanner/__Libraries/StellaOps.Scanner.SmartDiff/Detection/VexCandidateEmitter.cs - VexCandidateEmitter generates VEX candidates for findings that can be auto-resolved
    • src/Scanner/__Libraries/StellaOps.Scanner.SmartDiff/Detection/VexCandidateModels.cs - Models for VEX candidate data
    • src/Scanner/__Libraries/StellaOps.Scanner.SmartDiff/Detection/VexEvidence.cs - VEX evidence supporting auto-resolution decisions
  • SmartDiff Pipeline:
    • src/Scanner/__Libraries/StellaOps.Scanner.SmartDiff/SmartDiffPredicate.cs - SmartDiffPredicate applies reachability and VEX filters for quieter results
    • src/Scanner/__Libraries/StellaOps.Scanner.SmartDiff/Detection/Repositories.cs - Repository interfaces for SmartDiff detection data

E2E Test Plan

  • Scan an image with vulnerabilities in unreachable code paths and verify findings are suppressed by reachability gates
  • Verify VEX candidate emission generates auto-resolution candidates for backported patches
  • Verify the SmartDiff pipeline deduplicates findings that appear in both old and new scan results
  • Verify the combination of reachability gates + VEX candidates + deduplication produces significantly fewer actionable findings
  • Verify suppressed findings are still accessible with their suppression reason when queried explicitly

Verification

Check Result
Tier 0 - Source files exist PASS
Tier 1 - Build + code review PASS
Tier 2 - Integration tests PASS
Verified 2026-02-13T18:10:00Z