CVE-2022-31615

What it actually does

Local user triggers a null-pointer dereference in the kernel-mode layer of the NVIDIA GPU Display Driver for Linux, resulting in denial of service.

Why it matters to the business

Systems using the affected driver may experience unexpected crashes or loss of GPU services, interrupting workloads that depend on graphics acceleration; low exploitation likelihood and no known ransomware use reduce urgency but still require patching on Linux NVIDIA setups.

How an attack unfolds

An attacker with local basic privileges interacts with the vulnerable kernel driver component to force a null-pointer dereference, causing the system to become unavailable.

How to fix it

Apply the vendor-supplied driver update that resolves the null-pointer issue; for any showdoc instances listed, upgrade to commit 830c89a4c2c5fd0dd491422bf8e97b4eb5713f55.

How to confirm the fix worked

Confirm the installed NVIDIA driver version is newer than the vulnerable release and test that GPU-accelerated applications no longer trigger kernel faults under local user workloads.

Typical attack path

1. Obtain local access to a Linux system with the vulnerable NVIDIA driver
2. Run code or commands under a basic user account
3. Issue crafted operations against the GPU kernel interface
4. Trigger the null-pointer dereference to crash the system

How to detect it

Review system and kernel logs for null-pointer dereference entries referencing the NVIDIA driver; correlate with local user sessions that precede sudden reboots or GPU service failures.

What your security team should do

• Prioritize patching NVIDIA GPU drivers on all Linux systems within standard maintenance windows
• Audit local user access to GPU resources and limit unnecessary privileges
• Monitor for any future EPSS increases or KEV listing