CVE-2022-31607

What it actually does

Local user with basic capabilities triggers improper input validation in the nvidia.ko kernel module, resulting in denial of service, privilege escalation, data tampering, and limited information disclosure.

Why it matters to the business

Attackers already on a Linux system can crash GPU operations or gain elevated access, disrupting workloads that depend on NVIDIA hardware and potentially leading to full system compromise.

How an attack unfolds

An attacker with local low-privileged access crafts specially formed input passed to the kernel driver, exploiting the validation flaw to escalate privileges or induce instability.

How to fix it

Upgrade the NVIDIA GPU Display Driver for Linux to a version that resolves the input validation defect in the kernel mode layer.

How to confirm the fix worked

Confirm the installed driver version is newer than the vulnerable release and verify that the kernel module no longer accepts the previously exploitable malformed inputs.

Typical attack path

1. Gain local shell access with standard user rights
2. Locate the installed NVIDIA kernel module version
3. Prepare and deliver malformed input targeting nvidia.ko
4. Achieve privilege escalation, data tampering, or service denial

How to detect it

Review kernel logs and system audit records for repeated nvidia.ko errors, unexpected privilege transitions, or crashes coinciding with user activity on systems running the vulnerable driver.

What your security team should do

• Prioritize patching NVIDIA Linux drivers across all affected hosts
• Restrict local user capabilities where GPU access is unnecessary
• Monitor kernel logs for anomalous nvidia.ko behavior
• Audit systems for unexpected privilege changes