CVE-2025-20801
📋 TL;DR
This CVE describes a memory corruption vulnerability in the seninf component due to a race condition. It allows local privilege escalation from System privilege to potentially higher privileges without user interaction. Affects systems using MediaTek chipsets with vulnerable seninf implementations.
💻 Affected Systems
- MediaTek chipset-based devices
📦 What is this software?
Android by Google
Android by Google
Android by Google
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with kernel-level access, allowing attackers to install persistent malware, steal sensitive data, or disable security controls.
Likely Case
Local privilege escalation enabling attackers to bypass application sandboxes, access protected system resources, or maintain persistence on compromised devices.
If Mitigated
Limited impact if proper privilege separation and kernel hardening are implemented, though still concerning for devices with shared user environments.
🎯 Exploit Status
Race condition exploitation requires precise timing; attacker needs System privilege first.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply patch ID ALPS10251210
Vendor Advisory: https://corp.mediatek.com/product-security-bulletin/January-2026
Restart Required: Yes
Instructions:
1. Check device chipset and firmware version. 2. Contact device manufacturer for updated firmware containing patch ALPS10251210. 3. Apply firmware update following manufacturer instructions. 4. Reboot device.
🔧 Temporary Workarounds
Restrict System privilege access
linuxLimit which applications and users can obtain System privilege through SELinux/AppArmor policies.
# Review and tighten SELinux policies for seninf-related processes
# audit2allow -d to analyze current permissions
🧯 If You Can't Patch
- Implement strict application sandboxing to limit System privilege acquisition
- Monitor for unusual privilege escalation attempts using kernel audit logs
🔍 How to Verify
Check if Vulnerable:
Check kernel/driver version and patch status; consult device manufacturer for specific vulnerability assessment.Check Version:
# Check kernel version: uname -r
# Check MediaTek driver versions may require manufacturer-specific toolsVerify Fix Applied:
Verify patch ALPS10251210 is applied in kernel/driver version; check with manufacturer for confirmation.📡 Detection & Monitoring
Log Indicators:
- Kernel panic logs related to seninf driver
- Unexpected privilege escalation from System to higher privileges
- Race condition detection in kernel audit logs
Network Indicators:
- None - local exploitation only
SIEM Query:
source="kernel" AND ("seninf" OR "race condition" OR "privilege escalation")