CVE-2025-66320
📋 TL;DR
A race condition vulnerability in the camera framework module allows concurrent threads to interfere with camera operations, potentially causing system instability or crashes. This affects Huawei devices with vulnerable camera software versions. The vulnerability impacts availability but not confidentiality or integrity.
💻 Affected Systems
- Huawei smartphones and tablets with affected camera framework
📦 What is this software?
Harmonyos by Huawei
Harmonyos by Huawei
Harmonyos by Huawei
⚠️ Risk & Real-World Impact
Worst Case
Camera service crashes leading to device instability, requiring reboot to restore functionality.
Likely Case
Temporary camera unavailability or app crashes when multiple apps access camera simultaneously.
If Mitigated
Minor performance degradation during high camera usage scenarios.
🎯 Exploit Status
Requires app with camera permissions and ability to trigger concurrent camera operations; timing-dependent exploitation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Huawei security bulletin for specific patched versions
Vendor Advisory: https://consumer.huawei.com/en/support/bulletin/2025/12/
Restart Required: Yes
Instructions:
1. Check for system updates in device Settings. 2. Install latest security update. 3. Reboot device after installation.
🔧 Temporary Workarounds
Limit concurrent camera access
allPrevent multiple apps from accessing camera simultaneously through policy controls
Camera permission restrictions
allReview and restrict unnecessary camera permissions for apps
🧯 If You Can't Patch
- Monitor for camera service crashes and restart affected apps
- Implement app vetting to prevent malicious camera usage
🔍 How to Verify
Check if Vulnerable:
Check device security patch level in Settings > About phone > Build numberCheck Version:
adb shell getprop ro.build.version.security_patchVerify Fix Applied:
Verify security patch date is after vulnerability disclosure date (December 2025)📡 Detection & Monitoring
Log Indicators:
- Camera service crash logs
- ANR (Application Not Responding) for camera apps
- Concurrent camera access errors
Network Indicators:
- None - local vulnerability only
SIEM Query:
source="android_logs" AND ("camera" AND ("crash" OR "race" OR "concurrent"))