CVE-2022-21505

Severity: medium (CVSS 6.7 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-12-24 · updated 2026-10-14
Weakness: CWE-346

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).

Affected products

Oracle Corporation Oracle Linux: 7, 8, 9

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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