What is CVE-2022-32469?

CVE-2022-32469 is an issue discovered in Insyde InsydeH2O with kernel 5.0 through 5.5, which could lead to corruption of SMRAM and escalation of privileges through DMA attacks on the PnpSmm shared buffer.

What is the severity of CVE-2022-32469?

CVE-2022-32469 has a severity level of high.

How does CVE-2022-32469 affect InsydeH2O?

CVE-2022-32469 affects InsydeH2O versions 5.0 through 5.5 by introducing TOCTOU race-condition issues that could lead to corruption of SMRAM and privilege escalation.

How can CVE-2022-32469 be mitigated?

CVE-2022-32469 can be mitigated by using IOMMU protection to prevent DMA attacks on the PnpSmm shared buffer.

Where can I find more information about CVE-2022-32469?

More information about CVE-2022-32469 can be found at the following references: [https://www.insyde.com/security-pledge](https://www.insyde.com/security-pledge) and [https://www.insyde.com/security-pledge/SA-2023001](https://www.insyde.com/security-pledge/SA-2023001).

Vulnerability/
CVE-2022-32469

high

CWE

367

15/2/2023

3/8/2024

CVE-2022-32469

First published: Wed Feb 15 2023(Updated: )

An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. DMA attacks on the PnpSmm shared buffer used by SMM and non-SMM code could cause TOCTOU race-condition issues that could lead to corruption of SMRAM and escalation of privileges. This attack can be mitigated using IOMMU protection for the ACPI runtime memory used for the command buffer. This attack can be mitigated by copying the firmware block services data to SMRAM before checking it.

Credit: cve@mitre.org

Affected Software	Affected Version	How to fix
Insyde InsydeH2O	>=5.0<5.2.05.27.27
Insyde InsydeH2O	>=5.3<5.3.05.36.27
Insyde InsydeH2O	>=5.4<5.4.05.44.27
Insyde InsydeH2O	>=5.5<5.5.05.52.27

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Frequently Asked Questions

What is CVE-2022-32469?
CVE-2022-32469 is an issue discovered in Insyde InsydeH2O with kernel 5.0 through 5.5, which could lead to corruption of SMRAM and escalation of privileges through DMA attacks on the PnpSmm shared buffer.
What is the severity of CVE-2022-32469?
CVE-2022-32469 has a severity level of high.
How does CVE-2022-32469 affect InsydeH2O?
CVE-2022-32469 affects InsydeH2O versions 5.0 through 5.5 by introducing TOCTOU race-condition issues that could lead to corruption of SMRAM and privilege escalation.
How can CVE-2022-32469 be mitigated?
CVE-2022-32469 can be mitigated by using IOMMU protection to prevent DMA attacks on the PnpSmm shared buffer.
Where can I find more information about CVE-2022-32469?
More information about CVE-2022-32469 can be found at the following references: [https://www.insyde.com/security-pledge](https://www.insyde.com/security-pledge) and [https://www.insyde.com/security-pledge/SA-2023001](https://www.insyde.com/security-pledge/SA-2023001).

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vendor/insyde
canonical/insyde insydeh2o
version/insyde insydeh2o/5.0
version/insyde insydeh2o/5.3
version/insyde insydeh2o/5.4
version/insyde insydeh2o/5.5

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