CVE-2026-15904: Google Chrome Use-After-Free Vulnerability

CVE-2026-15904 Overview

CVE-2026-15904 is a use-after-free vulnerability in the Ozone component of Google Chrome on Linux. The flaw affects Chrome versions prior to 150.0.7871.128. A remote attacker who convinces a user to perform specific user interface (UI) gestures can trigger heap corruption through a crafted HTML page. Google classified the Chromium security severity as High. The vulnerability maps to CWE-416: Use After Free and requires user interaction to exploit successfully.

Critical Impact
Successful exploitation can lead to heap corruption in the browser process, enabling potential arbitrary code execution within the Chrome renderer context on Linux systems.

Affected Products

Google Chrome for Linux versions prior to 150.0.7871.128
Chromium-based browsers on Linux using the Ozone graphics abstraction layer
Downstream distributions bundling vulnerable Chromium releases

Discovery Timeline

2026-07-20 - CVE-2026-15904 published to NVD
2026-07-22 - Last updated in NVD database

Technical Details for CVE-2026-15904

Vulnerability Analysis

The vulnerability resides in Ozone, the Chromium abstraction layer that mediates rendering, windowing, and input handling on Linux platforms including X11 and Wayland. A use-after-free condition occurs when Ozone code accesses a heap object after it has already been released. The dangling pointer can then be manipulated by attacker-controlled content to corrupt heap memory. Exploitation requires the victim to load a crafted HTML page and perform specific UI gestures that drive the vulnerable code path.

The Chromium Issue Tracker Entry contains the restricted technical detail. Google announced the fix through the Google Chrome Desktop Update advisory. The EPSS forecast places near-term exploitation probability at 0.306%, and no public proof-of-concept or in-the-wild exploitation has been reported at this time.

Root Cause

The defect is a classic [CWE-416] use-after-free. Ozone releases a heap-allocated object while another code path retains a reference to it. Subsequent access through the stale pointer reads or writes freed memory that an attacker can reoccupy with controlled data. The result is heap corruption that can be shaped into arbitrary read, write, or control-flow hijack primitives.

Attack Vector

Attack delivery is network-based. The attacker hosts a malicious web page and lures the user to visit it, then prompts the victim to perform particular UI gestures such as drag operations, window interactions, or menu selections. These gestures trigger the Ozone code path that dereferences the freed object. No authentication is required, but user interaction is mandatory.

No verified exploit code is publicly available. Refer to the Chromium Issue Tracker Entry for technical details once Google removes the access restriction.

Detection Methods for CVE-2026-15904

Indicators of Compromise

Chrome renderer or browser process crashes on Linux with heap corruption signatures in dmesg or crashpad reports referencing Ozone symbols
Unexpected child process spawning from the Chrome browser process on Linux endpoints
Outbound connections from Chrome to newly registered or low-reputation domains immediately following a page visit

Detection Strategies

Inventory installed Chrome versions across Linux fleets and flag any build older than 150.0.7871.128
Correlate Chrome crash telemetry with visited URLs to identify pages that consistently trigger Ozone faults
Monitor endpoint detection and response (EDR) telemetry for anomalous process trees originating from the Chrome browser process

Monitoring Recommendations

Ingest Chrome crash reports and browser version telemetry into a centralized logging platform for continuous version compliance checks
Alert on Chrome processes performing unexpected file writes to autostart locations such as ~/.config/autostart/ or shell profile files
Track outbound network activity from Chrome renderer processes for connections to unclassified or reputation-flagged destinations

How to Mitigate CVE-2026-15904

Immediate Actions Required

Update Google Chrome on all Linux endpoints to version 150.0.7871.128 or later without delay
Restart the browser after the update to ensure the patched binary is loaded across all Chrome processes
Communicate to users the risk of interacting with unsolicited links or performing prompted UI gestures on untrusted pages

Patch Information

Google released the fix in Chrome Stable channel version 150.0.7871.128 for Linux. Details are documented in the Google Chrome Desktop Update release notes. Administrators managing Chromium-derived browsers should apply the corresponding upstream patch once distribution maintainers publish it.

Workarounds

Enforce browser update policies through configuration management to prevent version drift on Linux workstations
Restrict browsing to trusted sites via web filtering while patch deployment is in progress
Deploy Chrome enterprise policies that disable or restrict features known to interact with Ozone input handling where operationally acceptable

bash

# Verify Chrome version on Linux and update via package manager
google-chrome --version

# Debian/Ubuntu
sudo apt update && sudo apt install --only-upgrade google-chrome-stable

# RHEL/Fedora
sudo dnf upgrade google-chrome-stable

# Confirm patched version (must be >= 150.0.7871.128)
google-chrome --version