CVE-2021-45971
High
Description
An issue was discovered in SdHostDriver 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 (CommBufferData).
SeverityHigh
CVSS8.2
Exploit probability—
ProductInsydeh2o
PublishedJan 6, 2022
First seenJan 6, 2022
How to fix
Update
- insyde insydeh2o5.16.25, 5.26.25, 5.35.25, 5.43.25, 05.51.25 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| insyde insydeh2o | 5.1 ≤ v < 5.16.25, 5.2 ≤ v < 5.26.25, 5.3 ≤ v < 5.35.25, 5.4 ≤ v < 5.43.25, 5.5 ≤ v < 05.51.25 | 5.16.25, 5.26.25, 5.35.25, 5.43.25, 05.51.25 |
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