CVE-2021-38578
CRITICAL9.8EPSS 0.06%Published: 3/3/2022Modified: 4/28/2026
Description
Existing CommBuffer checks in SmmEntryPoint will not catch underflow when computing BufferSize.
Affected packages (1)
- Debian/edk2from 0, < 2020.11-2+deb11u3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |