CVE-2025-47359: Memory Corruption Race Condition Flaw

CVE-2025-47359 Overview

CVE-2025-47359 is a Use After Free (CWE-416) vulnerability that occurs when multiple threads simultaneously access a memory free API. This race condition in memory management can lead to memory corruption, potentially enabling attackers with local access to achieve code execution or system compromise.

Critical Impact

This Use After Free vulnerability allows local attackers with low privileges to potentially achieve high impact on confidentiality, integrity, and availability through concurrent memory access exploitation.

Affected Products

• Qualcomm products (refer to the February 2026 Security Bulletin for specific components)

Discovery Timeline

• February 2, 2026 - CVE-2025-47359 published to NVD
• February 3, 2026 - Last updated in NVD database

Technical Details for CVE-2025-47359

Vulnerability Analysis

This vulnerability is classified as CWE-416 (Use After Free), a memory corruption issue that arises from improper synchronization in multi-threaded environments. The flaw occurs when one thread frees a memory region while another thread continues to reference or access that same memory location, leading to use-after-free conditions.

In concurrent programming scenarios, memory management APIs must implement proper locking mechanisms to ensure atomicity of operations. When these synchronization primitives are missing or improperly implemented, race conditions can occur between the deallocation of memory and subsequent access attempts by other threads.

The local attack vector requires an attacker to have existing access to the target system. Once exploited, this vulnerability can result in arbitrary code execution, system crashes, or unauthorized data access due to the corruption of memory structures.

Root Cause

The root cause is a race condition vulnerability stemming from insufficient synchronization when multiple threads concurrently invoke memory deallocation functions. Without proper mutual exclusion mechanisms (such as mutexes or spinlocks), the time-of-check to time-of-use (TOCTOU) gap allows one thread to free memory while another thread still holds a reference to it, resulting in dangling pointer access.

Attack Vector

The attack requires local system access with low privileges. An attacker would need to:

1. Identify a code path that triggers concurrent memory free operations
2. Create a race condition by timing thread execution to overlap memory operations
3. Exploit the resulting use-after-free condition to corrupt memory structures
4. Leverage the corruption to achieve code execution or escalate privileges

The vulnerability manifests in the memory free API when multiple threads attempt simultaneous deallocation. Technical details regarding the specific affected component and exploitation methodology can be found in the Qualcomm February 2026 Security Bulletin.

Detection Methods for CVE-2025-47359

Indicators of Compromise

• Unexpected application crashes or system instability related to memory corruption
• Abnormal thread synchronization patterns in process memory analysis
• System logs indicating memory access violations or segmentation faults
• Suspicious local process activity attempting to exploit race conditions

Detection Strategies

• Monitor for applications exhibiting use-after-free memory access patterns using memory debuggers
• Implement runtime memory corruption detection tools such as AddressSanitizer
• Deploy endpoint detection solutions capable of identifying exploitation attempts of memory corruption vulnerabilities
• Analyze crash dumps for evidence of heap corruption or dangling pointer access

Monitoring Recommendations

• Enable comprehensive logging for system crashes and memory-related exceptions
• Implement process monitoring for unusual thread creation and synchronization patterns
• Utilize SentinelOne's behavioral AI to detect memory corruption exploitation attempts
• Monitor for privilege escalation attempts following memory corruption events

How to Mitigate CVE-2025-47359

Immediate Actions Required

• Review the Qualcomm February 2026 Security Bulletin for affected products and apply available patches
• Identify all Qualcomm-based devices in your environment that may be affected
• Prioritize patching based on device criticality and exposure
• Implement compensating controls on systems where immediate patching is not feasible

Patch Information

Qualcomm has addressed this vulnerability in their February 2026 Security Bulletin. Organizations should consult the Qualcomm February 2026 Security Bulletin for specific patch availability and affected product details. Coordinate with device manufacturers for firmware updates on affected Qualcomm-based hardware.

Workarounds

• Restrict local access to affected systems to trusted users only
• Implement additional access controls to limit exposure of vulnerable components
• Deploy application whitelisting to prevent unauthorized code execution
• Monitor affected systems closely for signs of exploitation until patches can be applied
• Consider isolating vulnerable systems from critical network segments

# Example: Verify system patch level (platform-specific commands vary)
# Check Qualcomm firmware version on Android devices:
adb shell getprop ro.build.fingerprint
adb shell getprop ro.vendor.build.security_patch