CVE-2021-1093

What it actually does

The vulnerability allows local attackers to trigger an assert() or equivalent statement in NVIDIA GPU Display Driver firmware, forcing an application exit, denial of service, or system crash.

Why it matters to the business

Systems using affected NVIDIA GPUs may experience unexpected crashes or service interruptions, resulting in operational downtime and potential loss of productivity on Windows and Linux deployments.

How an attack unfolds

An attacker with local access supplies crafted input that triggers the assertion check in the driver firmware, causing the process or kernel to terminate abnormally.

How to fix it

Apply the latest NVIDIA GPU Display Driver updates from the vendor for all affected Windows and Linux systems; monitor Debian package repositories for any backported fixes.

How to confirm the fix worked

Verify installed driver versions against current NVIDIA security bulletins and test that the assertion-triggering input no longer causes crashes in a controlled environment.

Typical attack path

1. Obtain local access on a target system with vulnerable NVIDIA GPU driver
2. Craft and deliver input designed to hit the assertion path in firmware
3. Trigger application or system termination leading to denial of service

How to detect it

Search system and driver logs for repeated assertion failures or unexpected NVIDIA process terminations; correlate with user activity preceding crashes.

What your security team should do

• Prioritize driver updates on all systems with NVIDIA GPUs
• Review system stability logs for recurring NVIDIA-related crashes
• Implement least-privilege access to limit local attacker opportunities