CVE-2026-47567 in GPU Display Driver
Summary
by MITRE • 09/30/2026
NVIDIA GPU Display Driver for Linux contains a vulnerability in the kernel mode layer, where a user could cause uncontrolled resource consumption by exhausting the DRM VMA offset address space. 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 Linux operating systems, specifically targeting the kernel mode component responsible for managing graphics resources and memory mappings. This area of the software stack is critical as it handles low-level interactions between user-space applications and the hardware, requiring elevated privileges to execute operations such as buffer allocation and address space management. The vulnerability stems from an insufficient validation mechanism within the Direct Rendering Manager interface implementation, which allows a local unprivileged or privileged user to manipulate how virtual memory area offsets are allocated and tracked by the kernel driver subsystems.
The technical nature of this flaw involves the exhaustion of the DRM VMA offset address space through crafted requests that trigger excessive allocation without proper bounds checking or cleanup procedures. When an attacker sends specific sequences of graphics commands or ioctl calls, they can force the system to consume available virtual memory addresses at a rate faster than the garbage collection or release mechanisms can reclaim them. This leads to a state where no new valid address space mappings can be created for legitimate processes, effectively saturating the resource pool allocated for display and rendering operations within that kernel session.
From an operational perspective, this vulnerability results in a severe denial of service condition affecting the local system's graphical interface and potentially other services dependent on GPU acceleration. As the offset address space becomes depleted, applications attempting to render graphics or perform compute tasks will fail due to memory allocation errors. This can cause display servers such as X11 or Wayland to crash, leading to a frozen screen or forced logout for all users logged into that session. In multi-user environments where GPU resources are shared among multiple processes, the impact may cascade, disrupting productivity and potentially causing data loss if unsaved work is associated with affected applications.
This type of vulnerability aligns with CWE-400, which describes uncontrolled resource consumption, as it allows an actor to deplete a finite system resource through repeated or sustained actions rather than exploiting a logic error that leads to code execution. Furthermore, the exploitation technique falls under MITRE ATT&CK tactic T1499, specifically Endpoint Denial of Service, where the adversary aims to disrupt availability by exhausting resources such as memory, CPU, or disk space on local endpoints. The attack vector is typically classified as Local with Low privileges required for initial access but potentially escalating in impact depending on whether the attacker has direct console access or can execute code within a sandboxed environment that interacts with the display driver.
Mitigation strategies primarily involve applying vendor-provided patches to update the NVIDIA GPU Display Driver to versions where this resource management logic has been corrected. System administrators should ensure that automatic updates are enabled for critical system components like graphics drivers, particularly in environments running Linux distributions that receive frequent security errata. Additionally, implementing strict user privilege separation and limiting direct access to kernel-mode interfaces can reduce the attack surface. Monitoring tools that track DRM subsystem metrics may help detect anomalous patterns of resource consumption indicative of such an exploit attempt before it leads to a complete system outage.