CVE-2024-56434 – This CVE describes a use-after-free vulnerabili... (How to Fix)

Q: What is the severity of CVE-2024-56434?

CVE-2024-56434 has a CVSS score of 4.4 (MEDIUM). This CVE describes a use-after-free vulnerability in the device node access module of Huawei devices. Successful exploitation could cause service exceptions or crashes on affected devices. This affects Huawei consumer devices running vulnerable firmware versions.

📋 TL;DR

This CVE describes a use-after-free vulnerability in the device node access module of Huawei devices. Successful exploitation could cause service exceptions or crashes on affected devices. This affects Huawei consumer devices running vulnerable firmware versions.

💻 Affected Systems

Products:

Huawei consumer devices with vulnerable firmware

Versions: Specific versions not detailed in provided reference; check Huawei advisory for exact ranges

Operating Systems: HarmonyOS/Android-based Huawei firmware

Default Config Vulnerable: ⚠️ Yes

Notes: Vulnerability exists in device node access module; exact device models would be specified in Huawei's full advisory

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Device becomes unresponsive or crashes, requiring physical restart and potentially causing service disruption.

🟠

Likely Case

Service interruption or device instability requiring reboot to restore functionality.

🟢

If Mitigated

Minimal impact with proper access controls and monitoring in place.

🌐 Internet-Facing: LOW - This appears to be a local vulnerability requiring access to the device.

🏢 Internal Only: MEDIUM - Could be exploited by malicious local users or compromised applications.

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: UNKNOWN

Unauthenticated Exploit: ✅ No

Complexity: MEDIUM

UAF vulnerabilities typically require specific conditions to trigger; local access or compromised application likely needed

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Check Huawei security bulletin for specific patched versions

Vendor Advisory: https://consumer.huawei.com/en/support/bulletin/2025/1/

Restart Required: Yes

Instructions:

1. Check Huawei security advisory for affected device models
2. Apply latest firmware update from official Huawei sources
3. Reboot device after update installation

🔧 Temporary Workarounds

Restrict local access

all

Limit physical and application access to vulnerable devices

Monitor device stability

all

Implement monitoring for device crashes or service interruptions

🧯 If You Can't Patch

Isolate vulnerable devices from untrusted networks
Implement strict application control policies

🔍 How to Verify

Check if Vulnerable:

Check device firmware version against Huawei's security advisory

Check Version:

Settings > About Phone > Build Number (exact command varies by device model)

Verify Fix Applied:

Verify firmware version matches or exceeds patched version from advisory

📡 Detection & Monitoring

Log Indicators:

Unexpected device reboots
Kernel panic or crash logs
Service interruption alerts

Network Indicators:

None - local vulnerability

SIEM Query:

Device logs showing unexpected restarts or kernel errors on Huawei devices

📊 Metadata

CVE ID: CVE-2024-56434

CVSS v3 Score: 4.4 (MEDIUM)

CVSS Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:H

CWE: CWE-416

EPSS Score: 0.03% exploit probability (9.2th percentile)

Published: January 8, 2025

Last Updated: September 18, 2025

🔗 References

https://consumer.huawei.com/en/support/bulletin/2025/1/ Vendor Advisory

📤 Share & Export

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🔗 Related Vulnerabilities

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