CVE-2025-20806
📋 TL;DR
This CVE describes a use-after-free vulnerability in the dpe component that could lead to memory corruption. An attacker with System privilege could exploit this to escalate privileges locally without user interaction. The vulnerability affects systems using MediaTek chipsets with the vulnerable dpe component.
💻 Affected Systems
- MediaTek chipsets with dpe component
📦 What is this software?
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
Local privilege escalation to kernel-level access, potentially allowing complete system compromise and persistence.
Likely Case
Local privilege escalation allowing an attacker to gain higher privileges than initially obtained.
If Mitigated
Limited impact if proper privilege separation and least privilege principles are enforced.
🎯 Exploit Status
Requires System privilege for initial foothold; exploitation involves memory corruption techniques
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check patch ID ALPS10114835
Vendor Advisory: https://corp.mediatek.com/product-security-bulletin/January-2026
Restart Required: Yes
Instructions:
1. Check vendor advisory for specific patch details. 2. Apply patch ALPS10114835. 3. Reboot device. 4. Verify patch installation.
🔧 Temporary Workarounds
Restrict System privilege access
linuxLimit which processes/users have System privilege to reduce attack surface
🧯 If You Can't Patch
- Implement strict access controls to limit System privilege to essential processes only
- Monitor for unusual privilege escalation attempts and memory corruption events
🔍 How to Verify
Check if Vulnerable:
Check device chipset and kernel version against vendor advisory; examine dpe component versionCheck Version:
cat /proc/version; check vendor-specific version commandsVerify Fix Applied:
Verify patch ALPS10114835 is applied; check kernel/dpe version after update📡 Detection & Monitoring
Log Indicators:
- Kernel panic logs
- Memory corruption errors in system logs
- Unexpected privilege escalation events
Network Indicators:
- None - local exploitation only
SIEM Query:
Search for kernel panic events OR memory corruption errors in system logs