CVE-2025-68961: Huawei HarmonyOS Race Condition Vulnerability

CVE-2025-68961 Overview

CVE-2025-68961 is a multi-thread race condition vulnerability discovered in the camera framework module of Huawei HarmonyOS. This vulnerability belongs to the race condition (CWE-362) class of security flaws, where improper synchronization between concurrent threads can lead to unexpected behavior. Successful exploitation of this vulnerability may affect system availability, potentially causing denial of service conditions on affected devices.

Critical Impact

Exploitation of this race condition in the camera framework could cause availability issues, potentially resulting in camera functionality crashes or system instability on HarmonyOS devices.

Affected Products

• Huawei HarmonyOS 5.0.1
• Huawei HarmonyOS 5.1.0
• Huawei HarmonyOS 6.0.0

Discovery Timeline

• January 14, 2026 - CVE-2025-68961 published to NVD
• January 15, 2026 - Last updated in NVD database

Technical Details for CVE-2025-68961

Vulnerability Analysis

This vulnerability stems from a race condition (CWE-362) within the camera framework module of HarmonyOS. Race conditions occur when the correct behavior of a program depends on the relative timing of events, such as the order in which threads are scheduled to run. In this case, multi-threaded operations within the camera framework lack proper synchronization mechanisms, creating a window where concurrent thread execution can lead to inconsistent state.

The local attack vector requires an attacker to have existing access to the target device, though exploitation complexity is considered high due to the timing-dependent nature of race conditions. While this vulnerability does not impact data confidentiality or integrity, successful exploitation can result in high availability impact, potentially causing the camera subsystem to become unresponsive or crash.

Root Cause

The root cause of CVE-2025-68961 lies in insufficient thread synchronization within the camera framework module. When multiple threads attempt to access or modify shared resources without proper locking mechanisms or atomic operations, a Time-of-Check Time-of-Use (TOCTOU) scenario or similar race condition can emerge. This lack of proper concurrency control allows thread interleaving at critical sections of code, leading to undefined behavior when the timing conditions align.

Attack Vector

The attack vector for this vulnerability is local, meaning an attacker must have prior access to the affected HarmonyOS device. Exploitation requires low privileges and no user interaction, but the high attack complexity reflects the difficulty in reliably triggering race conditions. An attacker would need to craft specific conditions to create thread contention within the camera framework, potentially through rapid camera API calls or by manipulating system load to influence thread scheduling.

The exploitation scenario involves triggering concurrent camera operations that expose the race condition window. Due to the nature of race conditions, successful exploitation may require multiple attempts and precise timing to achieve the desired denial of service effect.

Detection Methods for CVE-2025-68961

Indicators of Compromise

• Unexpected camera application crashes or freezes on HarmonyOS devices
• System logs showing camera framework errors or thread synchronization failures
• Repeated camera service restarts or abnormal resource utilization patterns

Detection Strategies

• Monitor system logs for camera framework crash reports or thread-related exceptions
• Implement application-level monitoring for camera API call patterns that could indicate exploitation attempts
• Track system stability metrics for devices running affected HarmonyOS versions

Monitoring Recommendations

• Enable detailed logging for camera framework operations on HarmonyOS devices
• Deploy endpoint detection solutions capable of monitoring for denial of service patterns
• Establish baseline camera framework performance metrics to detect anomalies

How to Mitigate CVE-2025-68961

Immediate Actions Required

• Update affected HarmonyOS devices to the latest available firmware version
• Review the Huawei Support Bulletin 2026-1 for device-specific patch information
• For laptop devices, consult the Huawei Laptops Bulletin 2026-1 for applicable updates

Patch Information

Huawei has addressed this vulnerability in their January 2026 security bulletin. Users should apply the latest HarmonyOS updates through their device's system update functionality. Organizations managing multiple Huawei devices should prioritize deployment of these security patches through their mobile device management (MDM) solutions.

Refer to the official Huawei security bulletins for detailed patch information:

• Huawei Support Bulletin 2026-1
• Huawei Laptops Bulletin 2026-1

Workarounds

• Restrict camera application permissions for untrusted applications until patches can be applied
• Limit device access to trusted users only, as exploitation requires local access
• Consider temporarily disabling camera functionality on critical devices if patches cannot be immediately deployed

For device-specific mitigation steps and configuration guidance, consult the official Huawei security advisories linked above.