CVE-2026-47581 in Windows
Summary
by MITRE • 09/30/2026
NVIDIA GPU Display Driver for Windows contains a vulnerability in the kernel module where a user could cause improper locking. A successful exploit of this vulnerability might lead to denial of service.
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Analysis
by VulDB Data Team • 09/30/2026
The identified security flaw resides within the NVIDIA Graphics Processing Unit display driver for Microsoft Windows, specifically affecting its underlying kernel-mode components. This vulnerability is characterized by an improper synchronization mechanism during concurrent access operations, which constitutes a classic race condition or locking error in system-level software. In modern operating systems like Windows, kernel modules operate with high privileges to manage hardware resources and ensure stability between the user-space applications and the physical GPU hardware. When these low-level components fail to correctly acquire or release locks before accessing shared data structures or critical sections of memory, they create a window for race conditions where multiple threads may attempt to modify state simultaneously without proper serialization.
From a technical perspective, this improper locking mechanism allows an attacker who has local access to the system to trigger specific sequences of operations that exploit the timing gap in lock acquisition. By carefully crafting requests or inputs that force conflicting accesses to protected resources within the driver's kernel module, it is possible to corrupt internal state variables or cause the operating system to enter a deadlock state. The core issue lies not necessarily in arbitrary code execution but rather in the integrity of the synchronization primitives used by the NVIDIA display driver to manage GPU contexts and memory allocations. This flaw aligns with CWE-362, which describes concurrent execution using shared resources with improper synchronization, highlighting that the root cause is a failure to enforce mutual exclusion where it is strictly required for system stability.
The operational impact of this vulnerability is primarily centered around service availability rather than confidentiality or integrity in the traditional sense. A successful exploitation attempt typically results in a denial of service condition, manifesting as a system hang, a blue screen of death with a kernel error code related to driver faults, or an automatic restart of the graphics subsystem. For end-users, this means sudden loss of graphical output and potential data loss if unsaved work is present on applications utilizing GPU acceleration at the time of the crash. While the immediate effect is disruptive, it does not inherently grant the attacker elevated privileges or remote control capabilities unless combined with other vulnerabilities in a chain attack scenario. The threat actor would need to be authenticated locally to trigger this condition, limiting the scope of potential abuse compared to remotely exploitable flaws.
In terms of classification within broader security frameworks, this incident maps directly to MITRE ATT&CK technique T1499, specifically Endpoint Denial of Service via resource exhaustion or system instability caused by driver exploitation. It also relates to CWE-835 regarding loops with unreachable exit conditions if the locking error leads to a permanent deadlock state that prevents further execution within the affected module. The vulnerability underscores the risks associated with third-party kernel drivers running at ring 0, where bugs can destabilize the entire operating system environment rather than just isolating damage to a single application sandbox.
Mitigation strategies for this issue focus on timely patch management and configuration hardening. Users should immediately apply the latest security updates provided by NVIDIA through their official GeForce Experience software or driver download portal, as these patches typically include fixes that enforce stricter locking protocols and add validation checks before critical sections are entered. Administrators managing enterprise environments should ensure that automatic driver update policies are configured to prioritize stability releases over beta versions when possible, although in this case the security fix is paramount. Additionally, implementing application control policies can restrict which processes have permission to load unsigned or unverified kernel drivers, reducing the attack surface for local privilege escalation attempts that might leverage such instability. Regular auditing of system logs for driver-related errors can also help identify systems potentially affected by intermittent crashes stemming from this flaw before a full exploitation occurs.