CVE-2025-54647
📋 TL;DR
An out-of-bounds read vulnerability in the SSAP module of the NearLink protocol stack could allow attackers to cause denial of service conditions. This affects systems using Huawei's NearLink technology for short-range wireless communication. The vulnerability primarily impacts availability rather than confidentiality or integrity.
💻 Affected Systems
- Huawei devices with NearLink technology
📦 What is this software?
Harmonyos by Huawei
⚠️ Risk & Real-World Impact
Worst Case
Complete system crash or service disruption of NearLink functionality, potentially affecting device connectivity and communication capabilities.
Likely Case
Service instability, intermittent connectivity issues, or degraded performance of NearLink-enabled features.
If Mitigated
Minor performance impact or no noticeable effect if proper input validation and boundary checks are implemented.
🎯 Exploit Status
Exploitation requires sending specially crafted packets to the NearLink protocol stack, which may require proximity to target device.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Huawei security bulletin for specific patched versions
Vendor Advisory: https://consumer.huawei.com/en/support/bulletin/2025/8/
Restart Required: No
Instructions:
1. Check Huawei security advisory for affected device models and versions. 2. Apply available firmware updates through official channels. 3. Verify update completion through device settings.
🔧 Temporary Workarounds
Disable NearLink when not needed
allTemporarily disable NearLink functionality to prevent exploitation until patches can be applied
🧯 If You Can't Patch
- Segment network to limit NearLink device communication to trusted devices only
- Monitor for unusual NearLink traffic patterns or connection attempts
🔍 How to Verify
Check if Vulnerable:
Check device firmware version against Huawei's security advisory for affected versionsCheck Version:
Check device settings > About phone > Build number or Software versionVerify Fix Applied:
Verify firmware version has been updated to patched version listed in Huawei advisory📡 Detection & Monitoring
Log Indicators:
- Unexpected NearLink connection failures
- Protocol stack error messages
- System instability after NearLink activity
Network Indicators:
- Unusual NearLink packet patterns
- Multiple failed connection attempts via NearLink
SIEM Query:
Search for NearLink protocol errors or connection anomalies in device logs