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High severity8.2NVD Advisory· Published Jan 5, 2022· Updated Aug 11, 2026

CVE-2021-45970

CVE-2021-45970

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).

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

4
  • Insyde/InsydeH2O2 versions
    cpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:*range: >=5.1,<5.16.25
    • (no CPE)range: < 05.16.25, < 05.26.25, < 05.35.25, < 05.43.25, < 05.51.25
  • Insyde/InsydeH2Odescription
  • Insyde/IdeBusDxellm-fuzzy
    Range: < 05.16.25, < 05.26.25, < 05.35.25, < 05.43.25, < 05.51.25

Patches

Vulnerability mechanics

References

5

News mentions

0

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