CVE-2025-12438
📋 TL;DR
This CVE describes a use-after-free vulnerability in the Ozone component of Google Chrome on Linux and ChromeOS. It allows a remote attacker to potentially exploit object corruption via a crafted HTML page, which could lead to arbitrary code execution or browser crashes. Users of affected Chrome versions on Linux and ChromeOS are at risk.
💻 Affected Systems
- Google Chrome
- Chromium-based browsers
📦 What is this software?
Chrome by Google
Google Chrome is the world's most popular web browser, used by over 3 billion users globally across Windows, macOS, Linux, Android, and iOS platforms. As a Chromium-based browser developed by Google, Chrome dominates the browser market with approximately 65% market share, making it a critical compon...
Learn more about Chrome →⚠️ Risk & Real-World Impact
Worst Case
Remote code execution with the privileges of the Chrome process, potentially leading to full system compromise if combined with other vulnerabilities.
Likely Case
Browser crash (denial of service) or limited memory corruption leading to unstable browser behavior.
If Mitigated
No impact if Chrome is fully patched or if exploit attempts are blocked by security controls.
🎯 Exploit Status
Exploitation requires user to visit a malicious webpage. No public proof-of-concept has been disclosed as of the advisory date.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 142.0.7444.59 and later
Vendor Advisory: https://chromereleases.googleblog.com/2025/10/stable-channel-update-for-desktop_28.html
Restart Required: Yes
Instructions:
1. Open Chrome. 2. Click the three-dot menu > Help > About Google Chrome. 3. Chrome will automatically check for updates and install version 142.0.7444.59 or later. 4. Click 'Relaunch' to restart Chrome and apply the update.
🔧 Temporary Workarounds
Disable JavaScript
allPrevents execution of malicious scripts that could trigger the vulnerability.
chrome://settings/content/javascript > toggle off
Use Site Isolation
allEnhances process separation to limit impact of potential exploits.
chrome://flags/#site-isolation-trial-opt-out > set to 'Disabled'
🧯 If You Can't Patch
- Restrict browsing to trusted websites only using network policies or browser extensions.
- Deploy web filtering solutions to block access to known malicious sites.
🔍 How to Verify
Check if Vulnerable:
Check Chrome version: if below 142.0.7444.59 on Linux or ChromeOS, the system is vulnerable.Check Version:
google-chrome --versionVerify Fix Applied:
Confirm Chrome version is 142.0.7444.59 or higher after update.📡 Detection & Monitoring
Log Indicators:
- Chrome crash logs with memory corruption errors
- Unexpected process terminations in system logs
Network Indicators:
- Unusual outbound connections from Chrome processes
- Requests to known exploit hosting domains
SIEM Query:
source="chrome_logs" AND (event="crash" OR event="segfault")