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).
Advisories
Source ID Title
EUVD EUVD EUVD-2021-32677 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).
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Tue, 04 Nov 2025 20:30:00 +0000

Type Values Removed Values Added
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2025-11-04T19:12:49.634Z

Reserved: 2022-01-01T00:00:00.000Z

Link: CVE-2021-45971

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2022-01-06T00:15:07.910

Modified: 2025-11-04T20:16:02.957

Link: CVE-2021-45971

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.