CVE-2022-32478
High
Description
An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. DMA attacks on the IdeBusDxe 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.
SeverityHigh
CVSS7.0
Exploit probability—
ProductInsydeh2o
PublishedFeb 15, 2023
First seenFeb 15, 2023
Weakness typeCWE-367CWE-367
How to fix
Update
- insyde insydeh2o5.0.05.09.42, 5.1.05.17.42, 5.2.05.27.38, 5.3.05.36.27, 5.4.05.44.27 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| insyde insydeh2o | 5.0 ≤ v < 5.0.05.09.42, 5.1 ≤ v < 5.1.05.17.42, 5.2 ≤ v < 5.2.05.27.38, 5.3 ≤ v < 5.3.05.36.27, 5.4 ≤ v < 5.4.05.44.27 | 5.0.05.09.42, 5.1.05.17.42, 5.2.05.27.38, 5.3.05.36.27, 5.4.05.44.27 |
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