CVE-2021-38578

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Source
https://cve.org/CVERecord?id=CVE-2021-38578
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-38578.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2021-38578
Downstream
Related
Published
2022-03-03T22:15:08.423Z
Modified
2026-03-14T11:06:16.072791Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

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

References

Affected packages

Git / github.com/tianocore/edk2

Affected ranges

Type
GIT
Repo
https://github.com/tianocore/edk2
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
b24306f15daa2ff8510b06702114724b33895d3c
Database specific 
{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "202202"
        }
    ]
}

Affected versions

Other
edk2-stable201808
edk2-stable201811
edk2-stable201903
edk2-stable201905
edk2-stable201908
edk2-stable201911
edk2-stable202002
edk2-stable202005
edk2-stable202008
edk2-stable202011
edk2-stable202102
edk2-stable202105
edk2-stable202108
edk2-stable202108-rc0
edk2-stable202108-rc1
edk2-stable202111
edk2-stable202111-rc1
edk2-stable202202
edk2-stable202202-rc1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-38578.json"
unresolved_ranges 
[
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "5.0"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "5.1"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "5.2"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "5.3"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "5.4"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "5.5"
            }
        ]
    }
]