CVE-2025-54641
📋 TL;DR
A buffer overflow vulnerability in the kernel acceleration module allows attackers to cause denial of service by sending specially crafted data. This affects systems running Huawei products with the vulnerable kernel module. The vulnerability stems from insufficient input validation in kernel-space code.
💻 Affected Systems
- Huawei products with kernel acceleration module
📦 What is this software?
Emui by Huawei
Emui by Huawei
Harmonyos by Huawei
Harmonyos by Huawei
Harmonyos by Huawei
⚠️ Risk & Real-World Impact
Worst Case
Complete system crash or kernel panic leading to sustained denial of service, requiring physical or remote console access to restore functionality.
Likely Case
Temporary service disruption or system instability requiring reboot to restore normal operation.
If Mitigated
Minimal impact with proper network segmentation and access controls limiting exposure to malicious traffic.
🎯 Exploit Status
Exploitation requires understanding of kernel memory layout and crafting specific data to trigger overflow. Likely requires some level of system access.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Huawei security bulletin for specific fixed versions
Vendor Advisory: https://consumer.huawei.com/en/support/bulletin/2025/8/
Restart Required: No
Instructions:
1. Review Huawei security bulletin for affected products. 2. Download and apply appropriate security updates from Huawei. 3. Verify kernel module version after update.
🔧 Temporary Workarounds
Disable kernel acceleration module
LinuxTemporarily disable the vulnerable kernel module if not essential for operations
modprobe -r [module_name]
echo 'blacklist [module_name]' >> /etc/modprobe.d/blacklist.conf
🧯 If You Can't Patch
- Implement strict network segmentation to isolate affected systems
- Apply principle of least privilege to limit user access to vulnerable systems
🔍 How to Verify
Check if Vulnerable:
Check kernel module version and compare against Huawei security bulletin for affected versionsCheck Version:
modinfo [module_name] | grep versionVerify Fix Applied:
Verify kernel module has been updated to patched version listed in Huawei advisory📡 Detection & Monitoring
Log Indicators:
- Kernel panic messages
- System crash/reboot logs
- Unexpected kernel module errors
Network Indicators:
- Unusual traffic patterns to kernel-related services
- Repeated connection attempts to system ports
SIEM Query:
source="kernel" AND ("panic" OR "oops" OR "segfault") AND module="acceleration"