CVE-2021-41839
High
Description
An issue was discovered in NvmExpressDxe in the kernel 5.0 through 5.5 in Insyde InsydeH2O. Because of an Untrusted Pointer Dereference that causes SMM memory corruption, an attacker may be able to write fixed or predictable data to SMRAM. Exploiting this issue could lead to escalating privileges to SMM.
SeverityHigh
CVSS8.2
Exploit probability—
ProductInsydeh2o
PublishedFeb 3, 2022
First seenFeb 3, 2022
How to fix
Update
- insyde insydeh2o5.16.25, 5.26.25, 5.35.25, 5.43.25, 5.51.25 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 < 5.51.25 | 5.16.25, 5.26.25, 5.35.25, 5.43.25, 5.51.25 |
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