Description
Existing CommBuffer checks in SmmEntryPoint will not catch underflow when computing BufferSize.
Published: 2022-03-03
Score: 7.4 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-4207-1 edk2 security update
EUVD EUVD EUVD-2021-25020 Existing CommBuffer checks in SmmEntryPoint will not catch underflow when computing BufferSize.
Ubuntu USN Ubuntu USN USN-7060-1 EDK II vulnerabilities
History

Mon, 03 Nov 2025 20:30:00 +0000

Type Values Removed Values Added
References

Wed, 23 Apr 2025 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Subscriptions

Insyde Kernel
Redhat Enterprise Linux
Tianocore Edk2
cve-icon MITRE

Status: PUBLISHED

Assigner: TianoCore

Published:

Updated: 2025-11-03T19:26:15.934Z

Reserved: 2021-08-11T00:00:00.000Z

Link: CVE-2021-38578

cve-icon Vulnrichment

Updated: 2025-11-03T19:26:15.934Z

cve-icon NVD

Status : Modified

Published: 2022-03-03T22:15:08.423

Modified: 2025-11-03T20:15:49.767

Link: CVE-2021-38578

cve-icon Redhat

Severity : Moderate

Publid Date: 2022-03-03T00:00:00Z

Links: CVE-2021-38578 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses