CVE-2024-20096
📋 TL;DR
This vulnerability in MediaTek's m4u component allows an attacker with system privileges to read memory beyond allocated bounds, potentially disclosing sensitive information. It affects MediaTek devices using vulnerable chipset drivers. No user interaction is required for exploitation.
💻 Affected Systems
- MediaTek chipsets with m4u component
📦 What is this software?
Android by Google
Android by Google
Android by Google
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
Local attacker with system privileges could read sensitive kernel memory, potentially exposing cryptographic keys, passwords, or other protected data.
Likely Case
Malicious app with system privileges could read adjacent memory regions, potentially leaking information about other processes or system state.
If Mitigated
With proper privilege separation and app sandboxing, impact is limited to information disclosure within the attacker's privilege context.
🎯 Exploit Status
Requires system execution privileges, making exploitation more difficult than user-level vulnerabilities. No public exploit code identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Patch ID: ALPS08996900
Vendor Advisory: https://corp.mediatek.com/product-security-bulletin/October-2024
Restart Required: Yes
Instructions:
1. Contact device manufacturer for firmware updates. 2. Apply MediaTek-provided patch ALPS08996900. 3. Update device firmware through official channels. 4. Reboot device after update.
🔧 Temporary Workarounds
Restrict system privileges
androidLimit which apps and services have system execution privileges to reduce attack surface.
🧯 If You Can't Patch
- Implement strict app vetting and only install trusted applications from official stores.
- Use mobile device management (MDM) solutions to monitor for suspicious privilege escalation attempts.
🔍 How to Verify
Check if Vulnerable:
Check device chipset information and firmware version against MediaTek security bulletins. Contact device manufacturer for specific vulnerability status.Check Version:
On Android: Settings > About Phone > Build Number / Kernel VersionVerify Fix Applied:
Verify firmware version includes patch ALPS08996900. Check with device manufacturer for specific fixed versions.📡 Detection & Monitoring
Log Indicators:
- Kernel logs showing memory access violations
- System privilege escalation attempts
Network Indicators:
- No network indicators - local vulnerability only
SIEM Query:
Search for kernel panic logs, memory access violation errors, or unexpected system privilege changes on MediaTek devices.