What is the severity of CVE-2021-45970?

CVE-2021-45970 is considered a high-severity vulnerability due to its impact on system management mode.

How do I fix CVE-2021-45970?

To fix CVE-2021-45970, you should update the InsydeH2O UEFI BIOS to a version later than the specified vulnerable versions.

Which versions of InsydeH2O are affected by CVE-2021-45970?

CVE-2021-45970 affects InsydeH2O versions prior to 5.16.25, 5.26.25, 5.35.25, 5.43.25, and 5.51.25.

What components are impacted by CVE-2021-45970?

CVE-2021-45970 impacts the ideBusDxe component within the InsydeH2O UEFI BIOS.

What does SMM mean in the context of CVE-2021-45970?

In the context of CVE-2021-45970, SMM stands for System Management Mode, which is a special operating mode for handling system management tasks.

Vulnerability/
CVE-2021-45970

high

8.2

CWE

787

5/1/2022

21/11/2024

CVE-2021-45970

First published: Wed Jan 05 2022(Updated: )

An issue was discovered in IdeBusDxe in Insyde InsydeH2O with kernel 5.1 before 05.16.25, 5.2 before 05.26.25, 5.3 before 05.35.25, 5.4 before 05.43.25, and 5.5 before 05.51.25. A vulnerability exists in the SMM (System Management Mode) branch that registers a SWSMI handler that does not sufficiently check or validate the allocated buffer pointer (the status code saved at the CommBuffer+4 location).

Credit: cve@mitre.org cve@mitre.org

Affected Software	Affected Version	How to fix
Insyde InsydeH2O UEFI BIOS	>=5.1<5.16.25
Insyde InsydeH2O UEFI BIOS	>=5.2<5.26.25
Insyde InsydeH2O UEFI BIOS	>=5.3<5.35.25
Insyde InsydeH2O UEFI BIOS	>=5.4<5.43.25
Insyde InsydeH2O UEFI BIOS	>=5.5<05.51.25

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Reference Links

Frequently Asked Questions

What is the severity of CVE-2021-45970?
CVE-2021-45970 is considered a high-severity vulnerability due to its impact on system management mode.
How do I fix CVE-2021-45970?
To fix CVE-2021-45970, you should update the InsydeH2O UEFI BIOS to a version later than the specified vulnerable versions.
Which versions of InsydeH2O are affected by CVE-2021-45970?
CVE-2021-45970 affects InsydeH2O versions prior to 5.16.25, 5.26.25, 5.35.25, 5.43.25, and 5.51.25.
What components are impacted by CVE-2021-45970?
CVE-2021-45970 impacts the ideBusDxe component within the InsydeH2O UEFI BIOS.
What does SMM mean in the context of CVE-2021-45970?
In the context of CVE-2021-45970, SMM stands for System Management Mode, which is a special operating mode for handling system management tasks.

agent/type
collector/mitre-cve
source/MITRE
agent/references
agent/severity
agent/weakness
agent/first-publish-date
agent/description
agent/last-modified-date
agent/author
agent/softwarecombine
agent/event
agent/source
agent/tags
collector/nvd-index
agent/software-canonical-lookup-request
collector/nvd-api
source/NVD
agent/software-canonical-lookup
vendor/insyde
canonical/insyde insydeh2o uefi bios
version/insyde insydeh2o uefi bios/5.1
version/insyde insydeh2o uefi bios/5.2
version/insyde insydeh2o uefi bios/5.3
version/insyde insydeh2o uefi bios/5.4
version/insyde insydeh2o uefi bios/5.5

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Frequently Asked Questions

What is the severity of CVE-2021-45970?
CVE-2021-45970 is considered a high-severity vulnerability due to its impact on system management mode.
How do I fix CVE-2021-45970?
To fix CVE-2021-45970, you should update the InsydeH2O UEFI BIOS to a version later than the specified vulnerable versions.
Which versions of InsydeH2O are affected by CVE-2021-45970?
CVE-2021-45970 affects InsydeH2O versions prior to 5.16.25, 5.26.25, 5.35.25, 5.43.25, and 5.51.25.
What components are impacted by CVE-2021-45970?
CVE-2021-45970 impacts the ideBusDxe component within the InsydeH2O UEFI BIOS.
What does SMM mean in the context of CVE-2021-45970?
In the context of CVE-2021-45970, SMM stands for System Management Mode, which is a special operating mode for handling system management tasks.