CVE-2022-21505

In the linux kernel, if IMA appraisal is used with the "ima_appraise=log" boot param, lockdown can be defeated with kexec on any machine when Secure Boot is disabled or unavailable. IMA prevents setting "ima_appraise=log" from the boot param when Secure Boot is enabled, but this does not cover cases where lockdown is used without Secure Boot. CVSS 3.1 Base Score 6.7 (Confidentiality, Integrity, Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H).

CVSS v3 6.7 MEDIUM

6.7^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 0.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/linus/543ce63b664e2c2f9533d089a4664b559c3e6b5b	Broken Link
https://linux.oracle.com/cve/CVE-2022-21505.html	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:oracle:linux:7:-::::::
	cpe:2.3:o:oracle:linux:8:-::::::
	cpe:2.3:o:oracle:linux:9:-::::::

History

18 Jun 2025, 20:42

Type	Values Removed	Values Added
References	~~() https://git.kernel.org/linus/543ce63b664e2c2f9533d089a4664b559c3e6b5b -~~	() https://git.kernel.org/linus/543ce63b664e2c2f9533d089a4664b559c3e6b5b - Broken Link
References	~~() https://linux.oracle.com/cve/CVE-2022-21505.html -~~	() https://linux.oracle.com/cve/CVE-2022-21505.html - Vendor Advisory
First Time		Oracle Oracle linux
CPE		cpe:2.3:o:oracle:linux:8:-:::::: cpe:2.3:o:oracle:linux:9:-:::::: cpe:2.3:o:oracle:linux:7:-::::::

27 Dec 2024, 17:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2024-12-24 19:15

Updated : 2025-06-18 20:42

NVD link : CVE-2022-21505

Mitre link : CVE-2022-21505

CVE.ORG link : CVE-2022-21505

JSON object : View

Products Affected

oracle

linux

CWE

CWE-346

Origin Validation Error

{"id": "CVE-2022-21505", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "secalert_us@oracle.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.7, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 0.8}]}, "published": "2024-12-24T19:15:06.763", "references": [{"url": "https://git.kernel.org/linus/543ce63b664e2c2f9533d089a4664b559c3e6b5b", "tags": ["Broken Link"], "source": "secalert_us@oracle.com"}, {"url": "https://linux.oracle.com/cve/CVE-2022-21505.html", "tags": ["Vendor Advisory"], "source": "secalert_us@oracle.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-346"}]}], "descriptions": [{"lang": "en", "value": "In the linux kernel, if IMA appraisal is used with the \"ima_appraise=log\" boot param, lockdown can be defeated with kexec on any machine when Secure Boot is disabled or unavailable. IMA prevents setting \"ima_appraise=log\" from the boot param when Secure Boot is enabled, but this does not cover cases where lockdown is used without Secure Boot. CVSS 3.1 Base Score 6.7 (Confidentiality, Integrity, Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H)."}, {"lang": "es", "value": "En el kernel de Linux, si se utiliza la evaluaci\u00f3n IMA con el par\u00e1metro de arranque \"ima_appraise=log\", el bloqueo se puede anular con kexec en cualquier m\u00e1quina cuando el arranque seguro est\u00e1 deshabilitado o no est\u00e1 disponible. IMA impide configurar \"ima_appraise=log\" desde el par\u00e1metro de arranque cuando el arranque seguro est\u00e1 habilitado, pero esto no cubre los casos en los que se utiliza el bloqueo sin arranque seguro. CVSS 3.1 Puntuaci\u00f3n base 6,7 (impactos de confidencialidad, integridad y disponibilidad). Vector CVSS: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H)."}], "lastModified": "2025-06-18T20:42:10.643", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:oracle:linux:7:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "44B8FEDF-6CB0-46E9-9AD7-4445B001C158"}, {"criteria": "cpe:2.3:o:oracle:linux:8:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CA9021D6-6027-42E9-A12D-7EA32C5C63F1"}, {"criteria": "cpe:2.3:o:oracle:linux:9:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9E6116DA-D643-4C6D-8B90-0A41125F1EF0"}], "operator": "OR"}]}], "sourceIdentifier": "secalert_us@oracle.com"}