CVE-2025-54633
📋 TL;DR
This CVE describes an out-of-bounds read vulnerability in the DMA module's register configuration. Successful exploitation could allow attackers to read sensitive memory contents, potentially exposing confidential data. The vulnerability affects systems using the affected DMA module implementation.
💻 Affected Systems
- Huawei products with affected DMA module
📦 What is this software?
Harmonyos by Huawei
Harmonyos by Huawei
⚠️ Risk & Real-World Impact
Worst Case
Attackers could read arbitrary memory contents, potentially exposing encryption keys, passwords, or other sensitive data stored in memory.
Likely Case
Information disclosure of adjacent memory regions, potentially revealing system state or partial sensitive data.
If Mitigated
Limited information exposure with proper memory isolation and access controls in place.
🎯 Exploit Status
Exploitation requires understanding of DMA register configuration and memory layout; likely requires local access or specific interface access.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Huawei advisory for specific patched versions
Vendor Advisory: https://consumer.huawei.com/en/support/bulletin/2025/8/
Restart Required: Yes
Instructions:
1. Review Huawei security advisory for affected products. 2. Download and apply firmware/software updates from Huawei. 3. Reboot affected systems to apply changes.
🔧 Temporary Workarounds
Restrict DMA access
allLimit DMA module access to trusted processes and users only
Configure system to restrict DMA register access to minimum necessary privileges
Memory isolation
allImplement stronger memory isolation between DMA-accessible regions and sensitive data
Configure memory protection mechanisms to isolate DMA buffers
🧯 If You Can't Patch
- Implement strict access controls to DMA configuration interfaces
- Monitor for unusual DMA activity or memory access patterns
🔍 How to Verify
Check if Vulnerable:
Check system firmware/software version against Huawei's affected versions list in advisoryCheck Version:
System-specific command to check firmware/software version (varies by product)Verify Fix Applied:
Verify firmware/software version matches patched version specified in Huawei advisory📡 Detection & Monitoring
Log Indicators:
- Unusual DMA configuration changes
- Multiple failed DMA register access attempts
- Unexpected memory access patterns
Network Indicators:
- N/A - Local vulnerability
SIEM Query:
Search for DMA configuration events or memory access violations in system logs