CVE-2021-38578
Published: 3 March 2022
Existing CommBuffer checks in SmmEntryPoint will not catch underflow when computing BufferSize.
Priority
Status
Package | Release | Status |
---|---|---|
edk2 Launchpad, Ubuntu, Debian |
lunar |
Not vulnerable
(2022.11-6)
|
trusty |
Ignored
(end of standard support)
|
|
upstream |
Needs triage
|
|
xenial |
Needs triage
|
|
bionic |
Needed
|
|
focal |
Needed
|
|
impish |
Ignored
(end of life)
|
|
jammy |
Needed
|
|
kinetic |
Ignored
(end of life, was needed)
|
|
mantic |
Not vulnerable
(2023.02-2)
|
|
Patches: upstream: https://github.com/tianocore/edk2/commit/cab1f02565d3b29081dd21afb074f35fdb4e1fd6 |
Severity score breakdown
Parameter | Value |
---|---|
Base score | 9.8 |
Attack vector | Network |
Attack complexity | Low |
Privileges required | None |
User interaction | None |
Scope | Unchanged |
Confidentiality | High |
Integrity impact | High |
Availability impact | High |
Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |