CVE-2024-23695
📋 TL;DR
This vulnerability allows local attackers to achieve kernel privilege escalation through an integer overflow leading to out-of-bounds write in the Android kernel. It affects Android devices running vulnerable kernel versions. No user interaction or additional privileges are required for exploitation.
💻 Affected Systems
- Android
📦 What is this software?
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with root-level access, allowing installation of persistent malware, data theft, and bypassing all security controls.
Likely Case
Local privilege escalation enabling attackers to gain kernel-level access on compromised devices, potentially leading to data exfiltration or further system manipulation.
If Mitigated
Limited impact with proper kernel hardening and SELinux policies in place, though kernel compromise remains possible.
🎯 Exploit Status
Exploitation requires local access but no authentication; integer overflow to out-of-bounds write chain requires precise manipulation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Android Security Bulletin June 2024 patches
Vendor Advisory: https://source.android.com/security/bulletin/2024-06-01
Restart Required: Yes
Instructions:
1. Apply Android Security Bulletin June 2024 patches. 2. Update device firmware through manufacturer channels. 3. Reboot device after update.
🔧 Temporary Workarounds
Kernel hardening via SELinux
linuxEnforce strict SELinux policies to limit kernel module loading and system call access.
setenforce 1
getenforce
🧯 If You Can't Patch
- Restrict physical and local access to devices
- Implement application allowlisting to prevent unauthorized code execution
🔍 How to Verify
Check if Vulnerable:
Check Android security patch level in Settings > About phone > Android version; if before June 2024, likely vulnerable.Check Version:
adb shell getprop ro.build.version.security_patchVerify Fix Applied:
Verify security patch level shows June 2024 or later in device settings.📡 Detection & Monitoring
Log Indicators:
- Kernel panic logs
- SELinux denials for cache_km operations
- Unexpected kernel module loading
Network Indicators:
- None - local exploit only
SIEM Query:
source="android_kernel" AND (event="panic" OR event="oops")