DEBIAN-CVE-2021-38578

Advisory lineage Upstream: 1 Downstream: 1
Upstream
CVE-2021-38578
Downstream
DLA-4207-1
Published: 03 Mar 2022, 22:15
Last modified:28 Apr 2026, 20:22

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9.8 CRITICAL
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

03 Mar 2022, 22:15
Published
Vulnerability first disclosed
28 Apr 2026, 20:22
Last Modified
Vulnerability information updated

Description

Existing CommBuffer checks in SmmEntryPoint will not catch underflow when computing BufferSize.

CVSS Metrics

  • v3.1•CRITICAL•Score: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Systems

  • debian•edk2

    < 2020.11-2+deb11u3 | < 2022.11-1 | < 2022.11-1 | < 2022.11-1

References (1)