CVE-2022-32471

Description

An issue was discovered in IhisiSmm in Insyde InsydeH2O with kernel 5.0 through 5.5. The IhisiDxe driver uses the command buffer to pass input and output data. By modifying the command buffer contents with DMA after the input parameters have been checked but before they are used, the IHISI SMM code may be convinced to modify SMRAM or OS, leading to possible data corruption or escalation of privileges.

Category

7.0
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.05%
Vendor Advisory insyde.com Vendor Advisory insyde.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.insyde.com/security-pledge vendor advisory
https://www.insyde.com/security-pledge/SA-2023003 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2022-32471?
CVE-2022-32471 has been scored as a high severity vulnerability.
How to fix CVE-2022-32471?
To fix CVE-2022-32471, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-32471 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-32471 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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