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CVE-2026-11119 describes an inappropriate implementation in the GPU component of Google Chrome on Android. This vulnerability, fixed in version 149.0.7827.53, allows a remote attacker who has already compromised the browser’s renderer process to attempt a sandbox escape. The renderer process is the component responsible for parsing and executing web content like HTML, CSS, and JavaScript. By design, it operates within a heavily restricted sandbox to contain malicious code. However, this flaw breaks that containment.
The core issue lies in how Chrome’s GPU process handles specific commands from a compromised renderer. If an attacker can control the renderer, they can craft a malicious sequence of GPU-related operations. When this sequence is sent to the GPU process, it triggers a memory corruption or a logic error. This error allows the attacker to overwrite critical memory structures or hijack the execution flow of the privileged GPU process. The GPU process, unlike the renderer, has significantly higher privileges and direct access to the system’s graphics hardware. Gaining code execution inside the GPU process effectively bypasses the primary sandbox, giving the attacker a foothold on the host Android system with the permissions of the Chrome application.
The attack vector is a specially crafted HTML page. When a victim visits this page, the exploit chain begins. The page first attempts to exploit a separate vulnerability to compromise the renderer process. Once control of the renderer is established, the attacker uses that access to send the malicious GPU commands. The Google Chrome security team assigned this issue a medium severity rating, indicating a significant risk but one that typically requires another bug to be exploited first.
DailyCVE Form:
Platform: Google Chrome
Version: < 149.0.7827.53
Vulnerability: Sandbox Escape
Severity: Medium
date: June 4, 2026
Prediction: Already patched (149.0.7827.53)
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Check Chrome version on Android device (via ADB) adb shell dumpsys package com.android.chrome | grep versionName Alternatively, check within the Chrome app chrome://version/
Simulated log of the exploit sequence Attacker establishes renderer control echo "Step 1: Renderer compromised via initial RCE" Attacker sends malicious GPU command buffer echo "Step 2: Sending malformed GPU commands from renderer" GPU process crashes or executes shellcode echo "Step 3: Sandbox escape achieved, spawning reverse shell"
Exploit:
A remote attacker hosts a malicious HTML page. The victim navigates to the page using an unpatched Chrome for Android. The page contains JavaScript that triggers a vulnerability in the rendering engine, gaining write-what-where primitives within the renderer process. Using this control, the attacker constructs a specially crafted array buffer or command buffer. This buffer is then submitted to the GPU process via the Mojo IPC interface. Due to the inappropriate implementation, the GPU process fails to validate the buffer’s length or content correctly. This leads to an out-of-bounds write, allowing the attacker to overwrite a function pointer or return address within the GPU process. Upon the next function call, the hijacked pointer redirects execution to attacker-controlled shellcode, which then downloads and executes a payload on the Android device.
Protection:
- Update Google Chrome on Android to version 149.0.7827.53 or later.
- Enable Site Isolation in Chrome flags for an additional layer of defense.
- Avoid browsing untrusted websites or clicking suspicious links on mobile devices.
- Use Android’s built-in security features like Google Play Protect, which can block known malicious apps.
Impact:
- Sandbox Escape: Successful exploitation allows an attacker to break out of Chrome’s restricted renderer sandbox.
- Full Browser Compromise: The attacker gains the same privileges as the Chrome application on the Android device.
- Potential Data Theft: This access can lead to theft of cookies, saved passwords, and other sensitive data stored by the browser.
- Further System Compromise: It could serve as a stepping stone to escalate privileges further within the Android operating system.
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Sources:
Reported By: nvd.nist.gov
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