CVE-2022-32953
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 SdHostDriver 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 | >=5.0<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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Reference Links
Frequently Asked Questions
What is CVE-2022-32953?
CVE-2022-32953 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.
How does CVE-2022-32953 affect Insyde InsydeH2O?
CVE-2022-32953 affects Insyde InsydeH2O versions 5.0 through 5.5.
What is the severity of CVE-2022-32953?
CVE-2022-32953 has a severity rating of high (7/10).
How can I mitigate CVE-2022-32953?
You can mitigate CVE-2022-32953 by using IOMMU protection.
Where can I find more information about CVE-2022-32953?
You can find more information about CVE-2022-32953 on the Insyde Security Pledge page and SA-2023013 security advisory.
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