CVE-2024-22008
📋 TL;DR
CVE-2024-22008 is an out-of-bounds write vulnerability in the config_gov_time_windows function of tmu.c in Android's kernel. This allows local attackers to escalate privileges without user interaction or additional execution privileges. The vulnerability affects Google Pixel devices running vulnerable Android kernel versions.
💻 Affected Systems
- Google Pixel devices
📦 What is this software?
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with root privileges, allowing attackers to install persistent malware, access all user data, and bypass security controls.
Likely Case
Local privilege escalation enabling attackers to gain elevated permissions, potentially leading to data theft, surveillance, or further system exploitation.
If Mitigated
Limited impact with proper kernel hardening, SELinux policies, and minimal user privileges, though kernel-level vulnerabilities remain serious.
🎯 Exploit Status
Requires local access but no user interaction; kernel exploitation typically requires specific technical knowledge.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: March 2024 Android security patch level
Vendor Advisory: https://source.android.com/security/bulletin/pixel/2024-03-01
Restart Required: Yes
Instructions:
1. Check for system updates in Settings > System > System update. 2. Install March 2024 security patch. 3. Reboot device to apply kernel updates.
🔧 Temporary Workarounds
Restrict local access
allLimit physical and remote local access to vulnerable devices to reduce attack surface.
🧯 If You Can't Patch
- Isolate vulnerable devices on separate network segments with strict access controls.
- Implement application whitelisting and monitor for unusual privilege escalation attempts.
🔍 How to Verify
Check if Vulnerable:
Check Android security patch level in Settings > About phone > Android version. If patch level is earlier than March 2024, device is likely vulnerable.Check Version:
adb shell getprop ro.build.version.security_patchVerify Fix Applied:
Verify security patch level shows March 2024 or later in Settings > About phone > Android version.📡 Detection & Monitoring
Log Indicators:
- Kernel panic logs, unusual privilege escalation in audit logs, SELinux denials for unexpected kernel operations
Network Indicators:
- Unusual outbound connections from device following local access
SIEM Query:
source="android" AND (event_type="kernel_panic" OR privilege_escalation=true)