CVE-2025-54625
📋 TL;DR
A race condition vulnerability in the kernel file system module could allow attackers to cause system instability or crashes. This affects systems running vulnerable kernel versions, potentially impacting availability through denial of service.
💻 Affected Systems
- Huawei devices with vulnerable kernel versions
📦 What is this software?
Harmonyos by Huawei
Harmonyos by Huawei
⚠️ Risk & Real-World Impact
Worst Case
System crash leading to complete unavailability and potential data corruption in file operations.
Likely Case
System instability, application crashes, or temporary service disruption during file operations.
If Mitigated
Minimal impact with proper kernel hardening and monitoring in place.
🎯 Exploit Status
Race conditions require precise timing and local access
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Huawei security bulletin for specific patched versions
Vendor Advisory: https://consumer.huawei.com/en/support/bulletin/2025/8/
Restart Required: Yes
Instructions:
1. Check Huawei security advisory for affected versions. 2. Apply kernel updates from official Huawei repositories. 3. Reboot system to load patched kernel.
🔧 Temporary Workarounds
Restrict file system access
allLimit user permissions and access to file system operations
chmod 700 sensitive_directories
setfacl -m u:user:rx /path
🧯 If You Can't Patch
- Implement strict access controls and least privilege principles
- Monitor system logs for file system anomalies and crashes
🔍 How to Verify
Check if Vulnerable:
Check kernel version against Huawei advisory: uname -rCheck Version:
uname -rVerify Fix Applied:
Verify kernel version matches patched version from advisory📡 Detection & Monitoring
Log Indicators:
- Kernel panic messages
- File system error logs
- System crash dumps
Network Indicators:
- Unusual file access patterns if monitored
SIEM Query:
source="kernel" AND ("panic" OR "oops" OR "BUG")