CVE-2022-34325 Race condition in n/a

High 7.8 Published 14 Nov 2022 Updated 30 Apr 2025

Attackers can corrupt SMRAM via TOCTOU race conditions in StorageSecurityCommandDxe, enabling privilege escalation or code execution in Insyde BIOS.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2022-34325?

CVE-2022-34325 is a high-severity vulnerability in Insyde Insydeh2o, published on 14 Nov 2022. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

DMA transactions which are targeted at input buffers used for the StorageSecurityCommandDxe software SMI handler could cause SMRAM corruption through a TOCTOU attack. DMA transactions which are targeted at input buffers used for the software SMI handler used by the StorageSecurityCommandDxe driver could cause SMRAM corruption. This issue was discovered by Insyde engineering based on the general description provided by

Weakness: CWE-367

Which versions are affected by CVE-2022-34325?

It affects 1 product.

Products include Insyde Insydeh2o.

How do I fix CVE-2022-34325?

No fix has been published for CVE-2022-34325 yet. Limit exposure of the affected software until one is available.

Is CVE-2022-34325 being exploited?

There is no known exploitation of CVE-2022-34325 in the wild and no public exploit code.

All Insyde Insydeh2o vulnerabilities

Sources

Also known as GHSA-gqmx-7hj9-m7jj.