# CVE-2026-47561: NVIDIA GPU Display Driver for Linux ioctl buffer overflow

Source: https://junglewise.ai/threats/cve-2026-47561-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-2026-47561 · Severity: high · CVSS 7.8 · Published 2026-09-30

NVIDIA's GPU display driver for Linux contains a vulnerability in kernel code that fails to validate the size of input buffers from unprivileged users. An attacker could exploit this to execute arbitrary code, crash the system, gain elevated privileges, steal sensitive data, or corrupt system files.

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-2026-47561 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-47561 being exploited in the wild.

**How severe is CVE-2026-47561?** 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-2026-47561?** 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-2026-47561 attacked?** It is attacked with local access.

**Am I affected by CVE-2026-47561?** 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 kernel mode layer of NVIDIA's display driver does not properly validate ioctl input buffer sizes, allowing unprivileged callers to trigger an out-of-bounds write in kernel memory. This vulnerability can be exploited via a local network or adjacent attack vector to achieve code execution, denial of service, privilege escalation, information disclosure, or data tampering.

## 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-2026-47561](https://www.cve.org/CVERecord?id=CVE-2026-47561)

## 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)