CVE-2026-15764 Overview
CVE-2026-15764 is a use-after-free vulnerability in the Ozone component of Google Chrome on Linux. The flaw affects Chrome versions prior to 150.0.7871.125. A remote attacker can trigger heap corruption by convincing a user to perform specific UI gestures on a crafted HTML page. Google classified the Chromium security severity as Critical, while the CVSS score is 7.5. The vulnerability is tracked under CWE-416: Use After Free and impacts the Ozone display and window management layer used by Chromium on Linux systems.
Critical Impact
Successful exploitation can lead to heap corruption and potential arbitrary code execution within the Chrome renderer or browser process, compromising user data and system integrity.
Affected Products
- Google Chrome for Linux versions prior to 150.0.7871.125
- Linux distributions shipping vulnerable Chromium-based builds
- Chromium Ozone platform abstraction layer
Discovery Timeline
- 2026-07-14 - CVE-2026-15764 published to the National Vulnerability Database
- 2026-07-15 - Last updated in NVD database
Technical Details for CVE-2026-15764
Vulnerability Analysis
The vulnerability resides in Ozone, the platform abstraction layer Chromium uses on Linux to manage display, input, and window system integration. Ozone brokers interactions between the browser and underlying windowing systems such as X11 and Wayland. A use-after-free condition occurs when the component references a heap object after it has been released. Attacker-controlled data can then occupy the freed memory region, leading to heap corruption when the dangling pointer is dereferenced.
Exploitation requires user interaction. The advisory notes that a victim must perform specific UI gestures while viewing a crafted HTML page. These gestures likely alter window state, focus, or input routing in ways that cause Ozone to release an object still referenced elsewhere. The high attack complexity reflects this dependency on precise timing and user actions.
Root Cause
The root cause is improper lifetime management of a heap-allocated object within Ozone's Linux implementation. When the object is destroyed, remaining references are not invalidated. Subsequent access to the stale pointer allows an attacker to influence control flow or corrupt adjacent heap structures. This class of flaw [CWE-416] frequently enables sandbox escapes or renderer compromise in modern browsers.
Attack Vector
The attack vector is network-based through the browser. An attacker hosts a malicious page containing crafted HTML and JavaScript designed to manipulate Ozone objects. The victim must visit the page and perform the required UI interaction, such as a drag, resize, or focus change. No authentication is required, and the exploit executes within the standard Chrome browsing context.
No public proof-of-concept exploit is available at this time, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog. See the Chromium Issue Report #517100492 for restricted technical details.
Detection Methods for CVE-2026-15764
Indicators of Compromise
- Chrome browser processes crashing with heap corruption signatures on Linux endpoints running versions prior to 150.0.7871.125
- Unexpected child process spawns from chrome or chromium following a browsing session involving untrusted sites
- Anomalous outbound connections initiated by the Chrome renderer or browser process after visiting a suspicious page
Detection Strategies
- Inventory installed Chrome versions across Linux fleets and flag hosts running builds below 150.0.7871.125
- Monitor SIGSEGV and SIGABRT signals delivered to Chrome processes, correlating with recent navigation history
- Correlate browser crash telemetry with URL reputation feeds to identify potential exploitation attempts
Monitoring Recommendations
- Ingest endpoint process, crash, and network telemetry from Linux workstations into a centralized analytics platform
- Alert on Chrome processes writing to unexpected filesystem locations or executing shell interpreters
- Track browser version drift across the environment to prioritize unpatched hosts for remediation
How to Mitigate CVE-2026-15764
Immediate Actions Required
- Update Google Chrome on all Linux endpoints to version 150.0.7871.125 or later
- Restart Chrome after applying the update to ensure the patched binaries are loaded
- Enforce automatic update policies for browsers across managed Linux systems
Patch Information
Google released the fix in the Stable Channel update for desktop. Refer to the Google Chrome Desktop Update advisory for full release notes. Chromium-based downstream browsers on Linux should be updated to a build that incorporates the corresponding Ozone fix.
Workarounds
- Restrict browsing to trusted sites until patching is complete
- Deploy site isolation and strict content policies through enterprise Chrome management
- Advise users to avoid unsolicited links and interactive prompts on unfamiliar pages
# Update Google Chrome on Debian/Ubuntu-based Linux systems
sudo apt update
sudo apt install --only-upgrade google-chrome-stable
# Verify the installed version meets or exceeds 150.0.7871.125
google-chrome --version
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
