Uninitialized Use in Dawn in Google Chrome prior to 149

#!/usr/bin/env python3
# check_chrome_cve_2026_11067.py
# Determine whether local Google Chrome is vulnerable to CVE-2026-11067
# Exit codes: 0=PATCHED, 1=VULNERABLE, 2=UNKNOWN

import os
import platform
import re
import subprocess
import sys

TARGET = (149, 0, 7827, 53)


def parse_version(text):
    m = re.search(r'(\d+)\.(\d+)\.(\d+)\.(\d+)', text or '')
    if not m:
        return None
    return tuple(int(x) for x in m.groups())


def cmp_version(a, b):
    return (a > b) - (a < b)


def run_cmd(cmd):
    try:
        p = subprocess.run(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True, timeout=5)
        out = (p.stdout or '') + ' ' + (p.stderr or '')
        return out.strip()
    except Exception:
        return ''


def get_windows_version():
    try:
        import winreg
    except Exception:
        return None

    reg_paths = [
        (winreg.HKEY_CURRENT_USER, r'Software\Google\Chrome\BLBeacon'),
        (winreg.HKEY_LOCAL_MACHINE, r'SOFTWARE\Google\Chrome\BLBeacon'),
        (winreg.HKEY_LOCAL_MACHINE, r'SOFTWARE\WOW6432Node\Google\Chrome\BLBeacon'),
    ]
    for hive, path in reg_paths:
        try:
            with winreg.OpenKey(hive, path) as key:
                value, _ = winreg.QueryValueEx(key, 'version')
                v = parse_version(str(value))
                if v:
                    return v
        except OSError:
            pass

    candidates = [
        os.path.expandvars(r'%ProgramFiles%\Google\Chrome\Application\chrome.exe'),
        os.path.expandvars(r'%ProgramFiles(x86)%\Google\Chrome\Application\chrome.exe'),
        os.path.expandvars(r'%LocalAppData%\Google\Chrome\Application\chrome.exe'),
    ]
    for exe in candidates:
        if exe and os.path.exists(exe):
            out = run_cmd([exe, '--version'])
            v = parse_version(out)
            if v:
                return v
    return None


def get_macos_version():
    candidates = [
        '/Applications/Google Chrome.app/Contents/MacOS/Google Chrome',
        os.path.expanduser('~/Applications/Google Chrome.app/Contents/MacOS/Google Chrome'),
    ]
    for exe in candidates:
        if os.path.exists(exe):
            out = run_cmd([exe, '--version'])
            v = parse_version(out)
            if v:
                return v
    return None


def get_linux_version():
    commands = [
        ['google-chrome', '--version'],
        ['google-chrome-stable', '--version'],
        ['chromium-browser', '--version'],
        ['chromium', '--version'],
    ]
    for cmd in commands:
        out = run_cmd(cmd)
        v = parse_version(out)
        if v:
            return v
    paths = [
        '/opt/google/chrome/google-chrome',
        '/usr/bin/google-chrome',
        '/usr/bin/google-chrome-stable',
        '/snap/bin/chromium',
        '/usr/bin/chromium-browser',
        '/usr/bin/chromium',
    ]
    for exe in paths:
        if os.path.exists(exe):
            out = run_cmd([exe, '--version'])
            v = parse_version(out)
            if v:
                return v
    return None


def main():
    system = platform.system().lower()
    version = None

    if 'windows' in system:
        version = get_windows_version()
    elif 'darwin' in system:
        version = get_macos_version()
    elif 'linux' in system:
        version = get_linux_version()
    else:
        print('UNKNOWN - unsupported platform: {}'.format(platform.system()))
        sys.exit(2)

    if not version:
        print('UNKNOWN - could not determine Chrome version')
        sys.exit(2)

    if cmp_version(version, TARGET) < 0:
        print('VULNERABLE - installed Chrome version {} is older than {}'.format('.'.join(map(str, version)), '.'.join(map(str, TARGET))))
        sys.exit(1)
    else:
        print('PATCHED - installed Chrome version {} is at or above {}'.format('.'.join(map(str, version)), '.'.join(map(str, TARGET))))
        sys.exit(0)


if __name__ == '__main__':
    main()