CVE-2025-36906
📋 TL;DR
This CVE describes a heap buffer overflow vulnerability in the ConvertReductionOp function of darwinn_mlir_converter_aidl.cc that allows local privilege escalation without user interaction. It affects Android devices, particularly Google Pixel phones, and could enable attackers to gain elevated system privileges. No additional execution privileges are needed for exploitation.
💻 Affected Systems
- Google Pixel phones
- Android devices using affected components
📦 What is this software?
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
An attacker could gain root/system-level privileges on the device, potentially compromising all user data, installing persistent malware, or using the device as a foothold for network attacks.
Likely Case
Local attackers or malicious apps could escalate privileges to access protected system resources, sensitive user data, or perform actions beyond their normal permissions.
If Mitigated
With proper security controls like SELinux, app sandboxing, and timely patching, the impact would be limited to denial of service or minimal privilege escalation within constrained contexts.
🎯 Exploit Status
Exploitation requires local access but no user interaction. The heap buffer overflow in ConvertReductionOp function could be leveraged for privilege escalation through careful memory manipulation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Android September 2025 security update
Vendor Advisory: https://source.android.com/security/bulletin/pixel/2025-09-01
Restart Required: Yes
Instructions:
1. Check for system updates in Settings > System > System update. 2. Download and install the September 2025 Android security update. 3. Reboot the device after installation completes. 4. Verify the patch is applied by checking the security patch level in Settings > About phone.
🔧 Temporary Workarounds
Disable unnecessary ML/neural network features
androidTemporarily disable machine learning acceleration features that use the vulnerable component
Restrict app permissions
androidLimit app permissions and install only trusted applications to reduce attack surface
🧯 If You Can't Patch
- Isolate affected devices from sensitive networks and data
- Implement strict app installation policies and monitor for suspicious activity
🔍 How to Verify
Check if Vulnerable:
Check security patch level in Settings > About phone. If before September 2025, device is vulnerable.Check Version:
adb shell getprop ro.build.version.security_patchVerify Fix Applied:
Verify security patch level shows 'September 5, 2025' or later in Settings > About phone.📡 Detection & Monitoring
Log Indicators:
- Kernel crash logs
- SELinux denials related to darwinn_mlir_converter
- Unexpected privilege escalation attempts
Network Indicators:
- Unusual outbound connections from system processes after local compromise
SIEM Query:
Process elevation from non-privileged to privileged context without legitimate cause