[LTP] [PATCH v5 1/2] doc: Add CVE catalog to documentation

[Sachin Sant <sachinp@linux.ibm.com>]

Add a new CVE catalog page that automatically generates a comprehensive
list of all CVE reproducers available in LTP. The catalog extracts CVE
information from test metadata tags and presents them in a table format
with links to corresponding test cases.

Changes:
- Add doc/users/cve_catalog.rst as new documentation page
- Implement generate_cve_catalog() in doc/conf.py to extract CVE tags
  from metadata/ltp.json and generate _static/cve.rst
- Configure autosectionlabel with document prefixes to prevent duplicate
  label warnings when same test names appear in multiple files
- Update doc/Makefile to clean generated _static/cve.rst file
- Add CVE catalog link to main documentation index

The catalog displays CVEs in descending order (newest first) with
cross-references to test cases in the test catalog, making it easy
to find reproducers for specific CVEs.

Closes: https://github.com/linux-test-project/ltp/issues/1254
Reviewed-by: Andrea Cervesato <andrea.cervesato@suse.com>
Signed-off-by: Sachin Sant <sachinp@linux.ibm.com>
---
V5 changes:
- Rewrite CVE catalog logic to only use ltp.json metadata
- Remove the dependency on runtest/cve file
- v4 link https://lore.kernel.org/ltp/aftwmBUir04jaik4@yuki.lan/T/#t

V4 changes:
- Simplified the CVE table (id, test name)
- Removed individual CVE pages
- v3 link https://lore.kernel.org/ltp/69f0b046.df0a0220.3765a8.f8e4@mx.google.com/T/#u

V3 changes:
- CVEs sorted in descending order
- append test name to CVE id : CVE (Test Name)
- Separate page for CVE catalog
- Link cve testcases to Test catalog entry
- v2 link https://lore.kernel.org/ltp/0df5f75d-eb8f-428e-9888-bb7a90a6b1a4@linux.ibm.com/

V2 changes:
- Replace Fixes tag by Closes
- V1 link https://lore.kernel.org/ltp/20260423105304.59788-1-sachinp@linux.ibm.com/T/#u
---
 doc/Makefile              |  3 +-
 doc/conf.py               | 84 +++++++++++++++++++++++++++++++++++++++
 doc/index.rst             |  4 ++
 doc/users/cve_catalog.rst |  6 +++
 4 files changed, 95 insertions(+), 2 deletions(-)
 create mode 100644 doc/users/cve_catalog.rst

diff --git a/doc/Makefile b/doc/Makefile
index 3123b1cd7..77a0fafad 100644
--- a/doc/Makefile
+++ b/doc/Makefile
@@ -30,8 +30,7 @@ spelling:
 	$(RUN_VENV); sphinx-build -b spelling -d build/doctree . build/spelling
 
 clean:
-	rm -rf html/ build/ _static/syscalls.rst _static/tests.rst syscalls.tbl \
-		${abs_top_builddir}/metadata/ltp.json
+	rm -rf html/ build/ _static/syscalls.rst _static/tests.rst _static/cve.rst syscalls.tbl
 
 distclean: clean
 	rm -rf $(VENV_DIR)
diff --git a/doc/conf.py b/doc/conf.py
index 63d09352e..a63849322 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -30,6 +30,15 @@ extensions = [
     'sphinx.ext.extlinks',
 ]
 
+# Configure autosectionlabel to prefix labels with document name
+# This prevents duplicate labels when same test name appears in multiple files
+autosectionlabel_prefix_document = True
+# Only create labels for sections with unique names
+autosectionlabel_maxdepth = 2
+
+# Suppress duplicate label warnings for kernel-doc generated content
+suppress_warnings = ['autosectionlabel.*']
+
 exclude_patterns = ["html*", '_static*', '.venv*']
 extlinks = {
     'repo': (f'{ltp_repo}/%s', '%s'),
@@ -535,6 +544,80 @@ def generate_test_catalog(_):
     with open(output, 'w+', encoding='utf-8') as new_tests:
         new_tests.write('\n'.join(text))
 
+def generate_cve_catalog(_):
+    """
+    Generate CVE catalog in a single file by extracting CVE tags from
+    metadata/ltp.json. This creates a single _static/cve.rst file with
+    all CVE information and links to test sources.
+    """
+    output = '_static/cve.rst'
+    metadata_file = '../metadata/ltp.json'
+
+    # Load metadata
+    metadata = None
+    try:
+        with open(metadata_file, 'r', encoding='utf-8') as data:
+            metadata = json.load(data)
+    except FileNotFoundError:
+        logger = sphinx.util.logging.getLogger(__name__)
+        msg = f"Can't find metadata file ({metadata_file})"
+        logger.warning(msg)
+        return
+
+    # Extract CVE information from test tags
+    cve_data = {}
+    tests = metadata.get('tests', {})
+
+    for test_name, test_info in tests.items():
+        tags = test_info.get('tags', [])
+        for tag in tags:
+        	if len(tag) >= 2 and tag[0] == 'CVE':
+        		cve_id = tag[1].upper()
+        		# Normalize CVE ID format: ensure it starts with "CVE-"
+        		if not cve_id.startswith('CVE-'):
+        			cve_id = 'CVE-' + cve_id
+        		if cve_id not in cve_data:
+        			cve_data[cve_id] = []
+        		cve_data[cve_id].append(test_name)
+
+    # Generate single CVE catalog file
+    total_cves = len(cve_data)
+    text = [
+        '.. warning::',
+        '    The following CVE catalog has been generated from test',
+        '    metadata and includes all CVE reproducers in LTP.',
+        '',
+        f'LTP includes reproducers for {total_cves} known CVEs.',
+        '',
+        '.. list-table::',
+        '   :header-rows: 1',
+        '   :widths: 40 60',
+        '',
+        '   * - CVE ID',
+        '     - Test Name(s)',
+    ]
+
+    # Add CVEs in descending order (newest first)
+    for cve_id in sorted(cve_data.keys(), reverse=True):
+        test_names = cve_data[cve_id]
+
+        # Create cross-references for all tests
+        test_links = []
+        for test_name in sorted(test_names):
+            test_anchor = f"users/test_catalog:{test_name}"
+            test_link = f":ref:`{test_name} <{test_anchor}>`"
+            test_links.append(test_link)
+
+        # Join multiple tests with commas
+        tests_str = ', '.join(test_links)
+
+        text.extend([
+            f'   * - {cve_id}',
+            f'     - {tests_str}',
+        ])
+
+    with open(output, 'w+', encoding='utf-8') as cve_catalog:
+        cve_catalog.write('\n'.join(text))
 
 def setup(app):
     """
@@ -543,4 +626,5 @@ def setup(app):
     """
     app.add_css_file('custom.css')
     app.connect('builder-inited', generate_syscalls_stats)
+    app.connect('builder-inited', generate_cve_catalog)
     app.connect('builder-inited', generate_test_catalog)
diff --git a/doc/index.rst b/doc/index.rst
index 496a12f80..733495f51 100644
--- a/doc/index.rst
+++ b/doc/index.rst
@@ -12,6 +12,7 @@
    users/testers_guide
    users/supported_systems
    users/stats
+   users/cve_catalog
    users/test_catalog
 
 .. toctree::
@@ -58,6 +59,9 @@ For users
 :doc:`users/stats`
    Some LTP statistics
 
+:doc:`users/cve_catalog`
+   LTP reproducers for known CVEs
+
 :doc:`users/test_catalog`
    The LTP test catalog
 
diff --git a/doc/users/cve_catalog.rst b/doc/users/cve_catalog.rst
new file mode 100644
index 000000000..5a5b9b54a
--- /dev/null
+++ b/doc/users/cve_catalog.rst
@@ -0,0 +1,6 @@
+.. SPDX-License-Identifier: GPL-2.0-or-later
+
+CVE catalog
+===========
+
+.. include:: ../_static/cve.rst
-- 
2.39.1


-- 
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