CVE-2025-47377 in Snapdragon Auto
Summary
by MITRE • 03/02/2026
Memory Corruption when accessing a buffer after it has been freed while processing IOCTL calls.
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Analysis
by VulDB Data Team • 03/02/2026
This vulnerability represents a critical memory corruption flaw that occurs during the processing of input/output control operations within kernel-mode drivers. The issue manifests when a buffer that has already been freed is accessed during IOCTL handling, creating a classic use-after-free condition that can lead to arbitrary code execution or system instability. The vulnerability stems from inadequate memory management practices where the driver fails to properly validate buffer states before accessing memory that has been marked for deallocation.
The technical implementation of this flaw involves the driver's IOCTL processing routine executing operations on memory structures that have already been released to the system's memory pool. This memory corruption can occur when multiple threads or processes interact with the same device handle, or when the driver's internal state management does not properly track buffer lifecycle events. The vulnerability is particularly dangerous because it operates at kernel level where such memory corruption can result in complete system compromise, allowing attackers to escalate privileges and execute malicious code with system-level permissions.
From an operational perspective, this vulnerability presents significant risks to system integrity and availability. Attackers can exploit this condition by crafting specific IOCTL requests that trigger the use-after-free scenario, potentially leading to privilege escalation, system crashes, or persistent backdoor installation. The impact extends beyond individual systems to entire network infrastructures where vulnerable drivers may be present across multiple devices. Security professionals must consider that this vulnerability aligns with CWE-416 which specifically addresses use-after-free errors, and potentially maps to ATT&CK techniques involving privilege escalation and defense evasion through kernel-level exploitation.
Mitigation strategies should focus on immediate driver updates from vendors, implementation of exploit prevention mechanisms such as address space layout randomization, and comprehensive system monitoring for unusual IOCTL activity patterns. Organizations should also implement strict access controls and privilege separation to limit potential exploitation vectors. The vulnerability demonstrates the critical importance of proper memory management in kernel-mode code and highlights the necessity of thorough security testing including fuzzing and memory safety analysis before deployment. Additionally, system administrators should monitor for signs of exploitation attempts through log analysis and implement network-based detection measures to identify potential abuse of this vulnerability across their infrastructure.