CVE-2021-45970

HIGH Year: 2021
CVSS v3 Score
8.2
High
CVSS v2 Score
7.2
High
Weakness Type
CWE-787
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Vulnerability Description

An issue was discovered in IdeBusDxe 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 (the status code saved at the CommBuffer+4 location).

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