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 3.1

6.7CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS

0.2% chance of exploitation in the next 30 days; higher than 9% of CVEs (scores of 2026-10-25)

CWE

CWE-346

Published

2024-12-24

Modified

2026-10-14

Record from

the NVD, synced 2026-10-19

Affected

• oracle:linux

References

• https://git.kernel.org/linus/543ce63b664e2c2f9533d089a4664b559c3e6b5b
• https://linux.oracle.com/cve/CVE-2022-21505.html
• https://cert-portal.siemens.com/productcert/html/ssa-794697.html

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