CVE-2025-36931
📋 TL;DR
This vulnerability allows local privilege escalation through an out-of-bounds write in the GetHostAddress function of gxp_buffer.h. Attackers can exploit this without user interaction or additional privileges to gain elevated system access. This affects Android devices, particularly Google Pixel phones.
💻 Affected Systems
- Google Pixel phones
- Android devices using affected components
📦 What is this software?
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with root privileges, allowing installation of persistent malware, data theft, and lateral movement within the network.
Likely Case
Local privilege escalation to gain elevated permissions, potentially enabling data access, surveillance, or further exploitation.
If Mitigated
Limited impact with proper patch management and security controls, though still a serious local vulnerability.
🎯 Exploit Status
Requires local access but no user interaction. Exploitation depends on understanding the buffer overflow specifics.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: December 2025 Android security patch
Vendor Advisory: https://source.android.com/security/bulletin/pixel/2025-12-01
Restart Required: Yes
Instructions:
1. Check for system updates in Settings > System > System update. 2. Install December 2025 security patch. 3. Reboot device after installation.
🔧 Temporary Workarounds
Restrict local access
allLimit physical and remote local access to vulnerable devices
🧯 If You Can't Patch
- Implement strict access controls to limit who can interact with vulnerable devices
- Monitor for suspicious privilege escalation attempts and unusual process behavior
🔍 How to Verify
Check if Vulnerable:
Check Android security patch level in Settings > About phone > Android version. If before December 2025, device is vulnerable.Check Version:
adb shell getprop ro.build.version.security_patchVerify Fix Applied:
Verify security patch level shows December 2025 or later in Settings > About phone > Android version.📡 Detection & Monitoring
Log Indicators:
- Unexpected privilege escalation events
- Suspicious process creation with elevated privileges
- Kernel or system component crashes
Network Indicators:
- Unusual outbound connections following local exploitation
SIEM Query:
Process creation where parent process is unexpected or user privilege changes from standard to elevated without legitimate cause