CVE-2025-54648
📋 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-enabled devices, potentially affecting critical communication functions.
Likely Case
Service instability, intermittent connectivity issues, or degraded performance in NearLink communications.
If Mitigated
Minor performance impact or no effect if proper input validation and boundary checks are implemented.
🎯 Exploit Status
Exploitation requires sending specially crafted packets to the NearLink protocol stack and 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. 2. Apply latest firmware/software updates from Huawei. 3. Verify update installation through device settings.
🔧 Temporary Workarounds
Disable NearLink functionality
allTemporarily disable NearLink wireless communication if not required
Navigate to device Settings > Connections > NearLink > Toggle OFF
Network segmentation
allIsolate NearLink-enabled devices from critical network segments
🧯 If You Can't Patch
- Implement network monitoring for unusual NearLink traffic patterns
- Restrict physical access to vulnerable devices to prevent proximity-based attacks
🔍 How to Verify
Check if Vulnerable:
Check device firmware version against Huawei's security advisory for affected versionsCheck Version:
Settings > About Phone > Version InformationVerify Fix Applied:
Verify installed firmware version matches or exceeds patched version listed in Huawei advisory📡 Detection & Monitoring
Log Indicators:
- Unexpected device crashes
- NearLink service restarts
- Memory access violation logs
Network Indicators:
- Unusual NearLink protocol traffic patterns
- Malformed SSAP packets
SIEM Query:
device_logs WHERE service='NearLink' AND (event='crash' OR event='restart')