# CVE-2026-47503: NVIDIA GPU Display Driver for Linux out-of-bounds write in Virtual GPU Manager

Source: https://junglewise.ai/threats/cve-2026-47503-nvidia-gpu-display-driver-for-linux-contains-a-vulnerability-in  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-30. Updated: 2026-09-30  
License: CC BY 4.0 with a link back

CVE-2026-47503 · Severity: high · CVSS 7.8 · Published 2026-09-30

NVIDIA's GPU Display Driver for Linux contains a flaw in its Virtual GPU Manager component that allows a guest virtual machine user to trigger an out-of-bounds memory write by sending a specially crafted message. An attacker exploiting this vulnerability could execute arbitrary code, escalate privileges, modify data, or crash the system, potentially affecting the host machine's security and availability.

Technologies: [Nvidia GPU Display Driver for Linux](https://junglewise.ai/threats/technologies/gpu-display-driver-for-linux). Vendors: [Nvidia](https://junglewise.ai/threats/vendors/nvidia).

## Quick answers

**Is CVE-2026-47503 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-47503 being exploited in the wild.

**How severe is CVE-2026-47503?** High severity, with a CVSS score of 7.8, published 30 September 2026.

**Which products and versions are affected?** NVIDIA GPU Display Driver for Linux.

**Is there a fix for CVE-2026-47503?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-47503 attacked?** It is attacked with local access.

**Am I affected by CVE-2026-47503?** Check whether you run Nvidia GPU Display Driver for Linux. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability is an out-of-bounds write in the Virtual GPU Manager's RPC message handler, triggered by crafted messages with invalid performance state list size parameters. Attack requires local access from a guest VM user; successful exploitation could lead to arbitrary code execution with hypervisor privileges, allowing compromise of the host or other guest VMs.

## Affected products

- NVIDIA GPU Display Driver for Linux

## Timeline

- 2026-09-30: disclosed

## References

- [https://github.com/NVIDIA/product-security/tree/main/2026/5861](https://github.com/NVIDIA/product-security/tree/main/2026/5861)
- [https://www.cve.org/CVERecord?id=CVE-2026-47503](https://www.cve.org/CVERecord?id=CVE-2026-47503)

## Related threats

- [NVIDIA GPU Display Driver kernel mode driver authorization bypass](https://junglewise.ai/threats/cve-2026-47604-nvidia-gpu-display-driver-for-windows-and-linux-contains-a)
- [NVIDIA GPU Display Driver information disclosure in kernel mode driver](https://junglewise.ai/threats/cve-2026-47603-nvidia-gpu-display-driver-for-windows-and-linux-contains-a)
- [NVIDIA GPU Display Driver kernel mode error-handling code execution](https://junglewise.ai/threats/cve-2026-47600-nvidia-gpu-display-driver-for-windows-and-linux-contains-a)
- [NVIDIA GPU Display Driver for Linux use-after-free in kernel module](https://junglewise.ai/threats/cve-2026-47598-nvidia-gpu-display-driver-for-linux-contains-a-vulnerability-in)
- [NVIDIA GPU Display Driver use-after-free in Resource Server](https://junglewise.ai/threats/cve-2026-47597-nvidia-gpu-display-driver-for-windows-and-linux-contains-a)