{
  "outcome": "no_distinct_variant_or_bypass",
  "confirmed_bypass": false,
  "confirmed_alternate_trigger": false,
  "validated_on_fixed_version": true,
  "tested_commit_vulnerable": "986c300c29055b837bfeb5f3c8e1b61583a52938",
  "tested_commit_fixed": "292d06f99f427ff4ea54720849659cbd9f8cfef8",
  "variant_attempts_count": 5,
  "variant_attempts": [
    {
      "id": "legendgraphic",
      "description": "Same SLD payload delivered via GetLegendGraphic WMS operation instead of GetMap",
      "vulnerable_result": "crash",
      "fixed_result": "no_crash",
      "is_distinct_variant": false,
      "reason": "Reaches the same sink (msSLDParseRasterSymbolizer) through identical intermediate parsing functions (msSLDApplySLD -> msSLDParseSLD)."
    },
    {
      "id": "getstyles",
      "description": "Same SLD payload delivered via GetStyles WMS operation",
      "vulnerable_result": "crash",
      "fixed_result": "no_crash",
      "is_distinct_variant": false,
      "reason": "Same code path as original; only the REQUEST parameter changes."
    },
    {
      "id": "reordered_xml",
      "description": "Categorize with 200 Value elements and 1 Threshold element (non-standard ordering)",
      "vulnerable_result": "no_crash",
      "fixed_result": "no_crash",
      "is_distinct_variant": false,
      "reason": "The values array guard (nValues == nMaxValues) is already correct, so this never triggers an overflow."
    },
    {
      "id": "thresholds_only",
      "description": "Categorize with 200 Threshold elements and zero Value elements",
      "vulnerable_result": "no_crash",
      "fixed_result": "no_crash",
      "is_distinct_variant": false,
      "reason": "CPLGetXMLNode(psCategorize, 'Value') returns NULL when no Value child exists, so the while loop body is skipped entirely and no array access occurs."
    },
    {
      "id": "large_count_overflow_probe",
      "description": "Categorize with 500 Threshold elements to test integer-overflow or scaling edge cases",
      "vulnerable_result": "crash",
      "fixed_result": "no_crash",
      "is_distinct_variant": false,
      "reason": "Confirms the fix scales correctly; still the same root cause and same surface."
    }
  ],
  "fix_completeness_assessment": "complete",
  "fix_blocker_reason": "The patch changes the reallocation guard from nValues == nMaxThreshold to nThresholds == nMaxThreshold. Because nThresholds is incremented immediately before the guard, the condition is now true precisely when the array is full, triggering correct reallocation every time. There is no code path that can write to papszThresholds without also incrementing nThresholds, so the guard cannot be bypassed.",
  "code_audit_findings": "Searched all msSmallMalloc/msSmallRealloc patterns in src/*.cpp for similar wrong-variable-in-guard bugs. Only the single known instance in mapogcsld.cpp:2897 was found.",
  "recommendation_for_coding_agent": "No additional fix needed. The existing rel-8-6-1 patch is complete. Consider adding a regression test with >100 Threshold elements.",
  "timestamp": "2026-05-28T13:48:00Z"
}