CVE-2025-47337: Race Condition Vulnerability

CVE-2025-47337 Overview

CVE-2025-47337 is a memory corruption vulnerability that occurs when accessing a synchronization object during concurrent operations. This Use-After-Free (CWE-416) vulnerability affects Qualcomm components and can be exploited by a local attacker with high privileges to potentially compromise system confidentiality, integrity, and availability.

Critical Impact

Local attackers with elevated privileges can exploit this Use-After-Free condition to corrupt memory, potentially leading to arbitrary code execution or system compromise on affected Qualcomm devices.

Affected Products

• Qualcomm chipsets and components (refer to Qualcomm January 2026 Security Bulletin for complete list)

Discovery Timeline

• 2026-01-07 - CVE CVE-2025-47337 published to NVD
• 2026-01-08 - Last updated in NVD database

Technical Details for CVE-2025-47337

Vulnerability Analysis

This vulnerability stems from improper handling of synchronization objects during concurrent operations. A Use-After-Free condition occurs when code continues to reference a memory location after it has been freed, creating an opportunity for memory corruption. In the context of synchronization primitives, this typically happens when multiple threads or processes attempt to access a shared object simultaneously without proper locking mechanisms.

The local attack vector requires an attacker to have existing access to the vulnerable system with high-level privileges. Once these preconditions are met, exploitation does not require user interaction, making it particularly concerning in scenarios where an attacker has already established a foothold on the device.

Root Cause

The root cause of CVE-2025-47337 is a classic Use-After-Free (CWE-416) vulnerability. This occurs when:

1. A synchronization object is allocated in memory
2. The object is freed during one operation
3. A concurrent operation attempts to access the already-freed memory location
4. The subsequent access leads to memory corruption

Race conditions in the synchronization logic allow this timing window to be exploited, as proper mutual exclusion mechanisms were not adequately implemented to protect the object's lifecycle.

Attack Vector

The attack requires local access to the device with elevated privileges. An attacker would need to:

1. Gain local access to a system running affected Qualcomm firmware or drivers
2. Trigger concurrent operations that access the vulnerable synchronization object
3. Exploit the race condition to cause the object to be freed while still in use
4. Leverage the resulting memory corruption to achieve code execution or escalate privileges

The vulnerability mechanism involves triggering the race condition in synchronization object handling. When two concurrent operations access the same object, one may free the memory while the other still holds a reference to it. Subsequent access through this dangling pointer corrupts memory. Refer to the Qualcomm January 2026 Security Bulletin for specific technical details.

Detection Methods for CVE-2025-47337

Indicators of Compromise

• Unexpected system crashes or kernel panics related to memory access violations in synchronization subsystems
• Anomalous memory allocation patterns or heap corruption signatures in system logs
• Unusual process behavior or privilege escalation attempts following memory corruption events

Detection Strategies

• Monitor kernel logs and crash dumps for Use-After-Free signatures or invalid memory access in synchronization-related code paths
• Implement memory sanitizers (ASan, MSan) in development and testing environments to detect memory corruption early
• Deploy endpoint detection and response (EDR) solutions capable of detecting exploitation attempts targeting memory corruption vulnerabilities

Monitoring Recommendations

• Enable verbose logging for kernel and driver components to capture memory allocation and deallocation events
• Configure security monitoring tools to alert on patterns consistent with race condition exploitation
• Regularly audit running processes for abnormal behavior that may indicate post-exploitation activity

How to Mitigate CVE-2025-47337

Immediate Actions Required

• Apply the latest firmware and driver updates from Qualcomm as documented in the Qualcomm January 2026 Security Bulletin
• Review device inventory to identify all systems with affected Qualcomm components
• Limit local access and elevated privileges on affected devices to reduce the attack surface
• Monitor affected systems for signs of exploitation until patches can be applied

Patch Information

Qualcomm has addressed this vulnerability in their January 2026 security update. Organizations should consult the Qualcomm January 2026 Security Bulletin for specific patch details and affected component versions. Device manufacturers should incorporate these patches into their firmware updates, and end users should apply updates as they become available from their device vendors.

Workarounds

• Restrict local access to affected devices to trusted users only
• Implement strict privilege separation to minimize accounts with high-level access
• Consider network segmentation to limit lateral movement in case of compromise
• Enable kernel address space layout randomization (KASLR) and other memory protection mechanisms to make exploitation more difficult

Mitigation for this vulnerability focuses on applying vendor patches and restricting local access. Organizations should consult the Qualcomm security bulletin for specific configuration guidance:

# Example: Check current firmware version on Android devices
adb shell getprop ro.build.fingerprint

# Verify security patch level
adb shell getprop ro.build.version.security_patch