CVE-2022-21505

Name: CVE-2022-21505
Creator: NVD / NIST
Published: 2024-12-24T19:15:06.763+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.7/10EPSS 0.20%

Last modified Jun 17, 2026

CVE-2022-21505 is a medium-severity vulnerability rated 6.7/10 on the CVSS scale. 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. EPSS estimates a 0.20% chance of exploitation in the next 30 days.

Description

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).

Metrics

CVSS 3.1

6.7/10

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.20%

10.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-346

Affected Software

Vendor	Product	Versions
Oracle	Linux	7
Oracle	Linux	8
Oracle	Linux	9

References

https://git.kernel.org/linus/543ce63b664e2c2f9533d089a4664b559c3e6b5bBroken Link
https://linux.oracle.com/cve/CVE-2022-21505.htmlVendor Advisory

Timeline

Published: Dec 24, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2022-21505?

How severe is CVE-2022-21505?

CVE-2022-21505 has a CVSS score of 6.7/10 (MEDIUM severity). The EPSS model estimates a 0.20% probability of exploitation in the next 30 days.

How do I fix CVE-2022-21505?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-21505?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST