CVE-2026-47603
Description
A flaw was found in the NVIDIA GPU Display Driver. Missing authorization checks in the kernel mode driver allow a local user to access the Graphics Processing Unit (GPU) channel state of another process. A local attacker can exploit this vulnerability to access sensitive process data, resulting in information disclosure.
Statement
This vulnerability is rated as having Moderate impact because exploitation requires local authenticated access and only affects confidentiality without compromising system integrity or service availability. On Red Hat Enterprise Linux systems running proprietary NVIDIA GPU drivers, an unprivileged local user could inspect GPU channel state information associated with other processes. Because remote exploitation is not possible and the flaw does not facilitate direct privilege escalation or denial of service, the risk is contained to local information disclosure between workloads.
Mitigation
Prevent the NVIDIA kernel driver from loading by configuring a blacklist rule if GPU acceleration is not required on the system.
1. Blacklist the module:
# echo "blacklist nvidia" > /etc/modprobe.d/blacklist-nvidia.conf
# echo "install nvidia /bin/true" >> /etc/modprobe.d/blacklist-nvidia.conf
2. Attempt to unload the module if currently active:
# modprobe -r nvidia
Caveats:
Blacklisting the NVIDIA kernel module disables GPU hardware acceleration, graphical display output on NVIDIA hardware, and compute workloads such as CUDA.
Warning:
A system reboot is required if the driver is currently in use by active processes and cannot be unloaded dynamically.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 5.5 | N/A | 5.5 |
| Attack Vector | Local | N/A | Local |
| Attack Complexity | Low | N/A | Low |
| Privileges Required | Low | N/A | Low |
| User Interaction | None | N/A | None |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | High | N/A | High |
| Integrity Impact | None | N/A | None |
| Availability Impact | None | N/A | None |
Vector
Red Hat: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
cve.org: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
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