CVE-2023-0188

What it actually does

An unprivileged local user can trigger an out-of-bounds read in the kernel mode display driver handler due to improper bounds checking on a memory buffer, resulting in a denial of service.

Why it matters to the business

Attackers with local access can crash systems using affected NVIDIA GPU drivers, leading to downtime on workstations, servers, or virtualized environments.

How an attack unfolds

An attacker with local access on a system with vulnerable NVIDIA GPU driver crafts a malicious input to the kernel mode handler that reads beyond allocated memory bounds, causing the driver to fault and the system to become unresponsive.

How to fix it

Update to the latest NVIDIA GPU Display Driver version that addresses this vulnerability. Monitor vendor advisories for patches across all affected products including virtual GPU and hypervisor deployments.

How to confirm the fix worked

Verify driver version against vendor security bulletin and test for absence of the vulnerability through code review or fuzzing if source available.

Typical attack path

1. Gain local access to target system
2. Load or interact with vulnerable kernel driver
3. Submit crafted input to trigger out-of-bounds read
4. Cause kernel panic or driver crash leading to DoS

How to detect it

Look for unexpected kernel driver crashes or system reboots in event logs related to NVIDIA display driver.

What your security team should do

• Prioritize patching NVIDIA drivers on all affected systems
• Restrict local access where possible
• Monitor for driver crashes in logs