CVE-2022-32954
First published: Wed Feb 15 2023(Updated: )
An issue was discovered in Insyde InsydeH2O with kernel 5.1 through 5.5. DMA attacks on the SdMmcDevice 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 by using IOMMU protection for the ACPI runtime memory used for the command buffer. This attack can be mitigated by copying the link data to SMRAM before checking it and verifying that all pointers are within the buffer.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Insyde InsydeH2O | >=5.1<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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Reference Links
Frequently Asked Questions
What is the vulnerability ID of this issue?
The vulnerability ID of this issue is CVE-2022-32954.
What is the severity of CVE-2022-32954?
The severity of CVE-2022-32954 is high (7 out of 10).
Which software versions are affected by CVE-2022-32954?
Insyde InsydeH2O versions 5.1 through 5.5 are affected by CVE-2022-32954.
How can the DMA attacks on the SdMmcDevice buffer be mitigated?
The DMA attacks on the SdMmcDevice buffer can be mitigated by using IOMMU protection.
Where can I find more information about CVE-2022-32954?
You can find more information about CVE-2022-32954 on the Insyde security pledge page and SA-2023014 advisory.
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