CVE-2025-48592
📋 TL;DR
This vulnerability allows remote attackers to read sensitive information from memory without authentication or user interaction. It affects Android devices using the vulnerable dav1d video decoder component. Attackers can exploit this heap buffer overflow to disclose potentially sensitive data from the device's memory.
💻 Affected Systems
- Android
📦 What is this software?
Android by Google
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
Remote information disclosure of sensitive memory contents including authentication tokens, encryption keys, or other application data.
Likely Case
Information leakage of adjacent memory contents, potentially exposing media processing data or application state.
If Mitigated
Limited impact with proper memory protection mechanisms and ASLR, though some information may still leak.
🎯 Exploit Status
Exploitation requires delivering malicious video content to trigger the decoder. No authentication or user interaction needed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: December 2025 Android Security Patch
Vendor Advisory: https://source.android.com/security/bulletin/2025-12-01
Restart Required: Yes
Instructions:
1. Apply December 2025 Android Security Patch. 2. Update affected devices through OTA updates. 3. For custom ROMs, apply patch from Android source repository.
🔧 Temporary Workarounds
Disable vulnerable decoder
androidDisable or restrict use of C2SoftDav1dDec component
Network filtering
allBlock or filter malicious video content at network perimeter
🧯 If You Can't Patch
- Implement strict content filtering for video files
- Isolate affected devices from untrusted networks
🔍 How to Verify
Check if Vulnerable:
Check Android security patch level in Settings > About phone > Android versionCheck Version:
adb shell getprop ro.build.version.security_patchVerify Fix Applied:
Verify security patch level shows December 2025 or later📡 Detection & Monitoring
Log Indicators:
- Media server crashes
- Decoder initialization failures
- Memory access violation logs
Network Indicators:
- Unusual video file transfers
- AV1 video content from untrusted sources
SIEM Query:
source="android" AND (event_type="crash" AND process="mediaserver") OR (event_type="security" AND description="memory violation")