CVE-2025-66322
📋 TL;DR
A race condition vulnerability in the camera framework module allows attackers to cause denial of service by exploiting multi-threading timing issues. This affects Huawei devices with vulnerable camera software. The vulnerability impacts availability but does not allow code execution or privilege escalation.
💻 Affected Systems
- Huawei smartphones and tablets with affected camera framework
📦 What is this software?
Harmonyos by Huawei
Harmonyos by Huawei
⚠️ Risk & Real-World Impact
Worst Case
Camera service crashes, making camera functionality unavailable until device restart, potentially affecting critical applications that rely on camera access.
Likely Case
Intermittent camera failures or application crashes when multiple apps attempt to access camera simultaneously.
If Mitigated
Minor performance degradation or temporary camera unavailability that self-recovers.
🎯 Exploit Status
Exploitation requires understanding of race condition timing and camera framework internals; likely requires app installation or system-level access.
🛠️ 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. Restart device 4. Verify camera functionality works normally
🔧 Temporary Workarounds
Disable camera for untrusted apps
allRestrict camera permissions to trusted applications only
Settings > Apps > [App Name] > Permissions > Camera > Deny
Avoid concurrent camera access
allEnsure only one application uses camera at a time
🧯 If You Can't Patch
- Implement application allowlisting to prevent untrusted apps from accessing camera
- Monitor for camera service crashes and restart service if needed
🔍 How to Verify
Check if Vulnerable:
Check device security patch level in Settings > About phone > Build number; compare with Huawei security bulletinCheck Version:
adb shell getprop ro.build.version.security_patchVerify Fix Applied:
Test camera functionality with multiple apps attempting concurrent access; verify no crashes occur📡 Detection & Monitoring
Log Indicators:
- Camera service crash logs
- ANR (Application Not Responding) for camera apps
- Permission denial logs for camera access
Network Indicators:
- None - this is a local vulnerability
SIEM Query:
source="android_logs" AND ("camera" AND ("crash" OR "ANR" OR "race"))