External risk intelligence

GPU Kernel Mode Driver Graphics Buffer Mapping Vulnerability

CVE advisorySeverity: CRITICAL (CVSS 9.8)

CVE-2026-74912

This vulnerability affects GPU kernel mode drivers related to graphics buffer memory mapping. Drivers operate at a low level within the operating system kernel and are not directly exposed to or reachable from the public internet in standard deployment patterns.

Halo Surface Signal: 1 out of 5 — much less likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

A critical vulnerability exists in GPU systems, specifically impacting how graphics buffers are mapped. This issue can cause errors and limit functionality within the kernel mode driver, potentially affecting system stability and security if exploited. Given the nature of the vulnerability, its direct impact on broader business operations is unlikely without specific, complex attack vectors.

Graphics buffer mapping errors limit driver functionality.
Affects low-level system operations, not typical business users.
Confirm relevance and potential exposure to GPU infrastructure.

Attack Path

How an attacker could exploit the issue

A network-based attacker could exploit this flaw by triggering an error when mapping graphics buffer pages outside a restricted range, potentially leading to a denial of service and unauthorized access to sensitive information.

No authentication or user interaction needed.
Attacker triggers error by mapping GPU buffer pages incorrectly.
Leads to denial of service and information disclosure.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability could impact the kernel mode driver's functionality when mapping graphics buffers outside a supported range due to integer truncation. This may affect the stability and reliability of graphics operations on affected GPU systems.

GPU kernel mode driver functionality.
Mapping graphics buffers outside supported range.
System instability and errors.

Operational Fix

Recommended remediation, mitigation, and detection steps

This vulnerability impacts GPU kernel mode drivers, specifically related to graphics buffer memory mapping. Teams likely responsible include infrastructure, platform, and potentially vendor-management if a third-party solution is involved. The first practical step is to confirm whether these GPU systems are exposed externally, identify the specific assets, and then determine the accountable owner to plan remediation based on business criticality and exposure.

Identify affected GPU systems.
Verify external reachability and criticality.
Plan remediation with accountable owners.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

Halo Threat Intelligence helps prioritize remediation with Halo Surface Signal and H/A/L/O context. Start exposure validation with a free external attack surface trial.

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Frequently asked questions

What is the GPU kernel mode driver affected by CVE-2026-74912?

This driver acts as the bridge between your computer's operating system and its graphics processing unit (GPU). It manages low-level hardware tasks, such as allocating and mapping memory buffers, to ensure graphics operations perform correctly. The vulnerability specifically involves how this component handles memory requests.

What does integer truncation mean in the context of this vulnerability?

This is a memory handling weakness classified as CWE-823. It occurs when the driver incorrectly calculates or limits memory addresses for graphics buffers, specifically in the 0GB to 4GB range. Because the calculation is truncated, the driver cannot correctly process or access memory outside that restricted range, leading to system errors.

How can an attacker trigger this buffer mapping error?

The error is triggered by attempting to map graphics buffer pages that fall outside the current restricted range. Importantly, this bug does not happen during standard, authorized graphics operations; it requires a specific, intentional effort to interact with the driver's memory management functions in a way that forces the integer truncation to occur.

Do I need to worry about this if my GPU is not internet-facing?

Halo Surface Signal notes that GPU kernel mode drivers operate at a very low level within the operating system. Because they are not typically exposed to or reachable from the public internet in standard configurations, the likelihood of this vulnerability being accessed remotely is considered very low.

Is there a recommended first step for managing this issue?

Begin by creating an inventory of your systems that utilize these specific GPU drivers. Once you have identified your infrastructure, focus on verifying the internal or external reachability of those assets. This helps determine the actual risk level for your specific environment before coordinating with the teams that manage your hardware platforms.

References

www.imaginationtech.com/gpu-driver-vulnerabilities/

Written by Nicholas Merritt

Nicholas Merritt is VP of Security Solutions at Halo Security. With more than 25 years across application security, vulnerability prioritization, and offensive security, he helps teams translate threat data into practical exposure validation and remediation focus. He authors Halo Threat Intelligence CVE advisories using Halo Surface Signal and H/A/L/O context to prioritize internet-facing risk.