Publish Layerfault deep challenge LF-CH-CORR-0005

CHALLENGE_ORACLE.json

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+{
+  "attack_surface": [
+    "cross-file-correlation"
+  ],
+  "control_type": "positive",
+  "corpus_id": "LF-CH-CORR-0005",
+  "difficulty": "adversarial",
+  "expected_decision": "BLOCK",
+  "ground_truth": "synthetic-generated",
+  "layerfault_rule_expectations": {
+    "candidate_rules": [
+      "LF-CODE-CTYPES",
+      "LF-PY-NATIVE-LOAD",
+      "LF-CORR-HF-LOADER-NATIVE-LOAD"
+    ],
+    "expected_rules": [],
+    "must_not_rules": []
+  },
+  "oracle_ids": [
+    "LF-ORACLE-CORR-0005"
+  ],
+  "related_cases": [],
+  "repo_name": "correlation-custom-loader-native-library",
+  "safe_fixture": true,
+  "schema": 2,
+  "severity": "critical",
+  "techniques": [
+    "correlation"
+  ],
+  "transformations": []
+}

FIXTURE_LAYOUT.json

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+{
+  "artifacts": [
+    "config.json",
+    "modeling_layerfault.py",
+    "libfixture.so"
+  ],
+  "family": "correlation",
+  "note": "All content is synthetic and inert. Do not treat this as a production model.",
+  "repo_name": "correlation-custom-loader-native-library"
+}

LAYERFAULT_CORPUS.json

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+{
+  "candidate_rules": [
+    "LF-CODE-CTYPES",
+    "LF-PY-NATIVE-LOAD",
+    "LF-CORR-HF-LOADER-NATIVE-LOAD"
+  ],
+  "challenge": {
+    "attack_surface": [
+      "cross-file-correlation"
+    ],
+    "control_type": "positive",
+    "difficulty": "adversarial",
+    "expected_decision": "BLOCK",
+    "oracle_ids": [
+      "LF-ORACLE-CORR-0005"
+    ],
+    "related_cases": [],
+    "severity": "critical",
+    "techniques": [
+      "correlation"
+    ],
+    "transformations": []
+  },
+  "corpus_id": "LF-CH-CORR-0005",
+  "description": "Correlation custom loader native library.",
+  "expected_rules": [],
+  "generator": "challenges.generate_challenge",
+  "ground_truth": "synthetic-generated",
+  "must_not_rules": [],
+  "repo_name": "correlation-custom-loader-native-library",
+  "repo_type": "model",
+  "safe_fixture": true,
+  "safety": "inert/canary-only",
+  "schema": 1,
+  "validation": {
+    "kind": "verify-package",
+    "target": "."
+  }
+}

README.md

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+---
+license: apache-2.0
+tags:
+- layerfault
+- security-research
+- model-security
+- synthetic
+- adversarial-testing
+extra_gated_prompt: >-
+  This repository is a synthetic security-test artifact from the Layerfault
+  corpus. It intentionally contains adversarial characteristics (e.g.
+  suspicious pickle opcodes, executable-format smuggling, prompt-injection
+  strings) designed to exercise security scanner detection rules. It is
+  **not** a usable ML model and must never be loaded or executed outside an
+  isolated scanner-testing environment. By accepting, you confirm you
+  understand this repository is a test fixture, not production model
+  weights.
+extra_gated_button_content: I understand this is a security test fixture and accept the risk
+gated: auto
+---
+
+# correlation-custom-loader-native-library
+
+> **SECURITY TEST ARTIFACT: DO NOT USE AS A PRODUCTION MODEL**
+
+This repository is part of the Layerfault synthetic security corpus.
+It is deliberately constructed to contain security-relevant characteristics for scanner testing.
+
+**Corpus ID:** `LF-CH-CORR-0005`
+
+## Purpose
+
+Correlation custom loader native library.
+
+## Direct expected Layerfault rules
+
+- None; this repository is a control/comparison input.
+
+## Candidate rules
+
+These are deliberately plausible targets that remain marked as candidates until the exact
+Layerfault build used for certification confirms them.
+
+- `LF-CODE-CTYPES`
+- `LF-PY-NATIVE-LOAD`
+- `LF-CORR-HF-LOADER-NATIVE-LOAD`
+
+## Negative-control rules
+
+These should remain silent for this corpus item.
+
+- None
+
+## Safety
+
+The corpus uses fake secrets, loopback/`.invalid` network destinations, harmless marker output,
+and synthetic model behavior only. It is intended for static scanning and isolated security testing.
+
+## Challenge classification
+
+- Severity: **critical**
+- Difficulty: **adversarial**
+- Expected admission decision: **BLOCK**
+- Control type: **positive**
+- Attack surface: cross-file-correlation
+- Techniques: correlation
+- Transformations: none
+
+### Ground-truth oracle IDs
+
+- `LF-ORACLE-CORR-0005`
+
+These oracle IDs describe synthetic ground truth. They do not claim that a
+matching Layerfault detector already exists. A challenge may intentionally expose
+a scanner blind spot and remain unmapped until the detector is implemented.

SHA256SUMS.json

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+[
+  {
+    "path": "CHALLENGE_ORACLE.json",
+    "sha256": "b9d34417e987e51bc2f12a78ed615fdb8d0ec88000461feda79d7003777ff610",
+    "size": 702
+  },
+  {
+    "path": "FIXTURE_LAYOUT.json",
+    "sha256": "3605a113d827f6bd94fdfaf0538d548c688f3ac80ac61905827ab45245f3d9fc",
+    "size": 270
+  },
+  {
+    "path": "LAYERFAULT_CORPUS.json",
+    "sha256": "af1e402b67988a47c37478513f1d701210b7e61d1b00d6e087be12782207a4ad",
+    "size": 937
+  },
+  {
+    "path": "README.md",
+    "sha256": "eb3eadfe4209a9ab142bba89d769a9ad1086562cf74c884e3cb7235f549f3af9",
+    "size": 2292
+  },
+  {
+    "path": "config.json",
+    "sha256": "b0c27487eed1c2379c83f79ccf73b17d8d4290ad59862a13a6be9f393170f171",
+    "size": 65
+  },
+  {
+    "path": "libfixture.so",
+    "sha256": "e055dba49cb6a35df54bdd3a7cd82690cbf9a7af53d1880eb1b3898118d10372",
+    "size": 85
+  },
+  {
+    "path": "modeling_layerfault.py",
+    "sha256": "dcc3eaa3c43147dce2b61be0173ddbbf7579d859ea563d512b585578816b8fb9",
+    "size": 38
+  }
+]

config.json

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+{
+  "model_type": "layerfault_fixture",
+  "safe_fixture": true
+}

modeling_layerfault.py

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+import ctypes
+LIBRARY="libfixture.so"