What is CVE-2022-21505?

CVE-2022-21505 is a medium-severity vulnerability in Oracle Linux, classified under Origin Validation Error. CVSS score: 6.7/10. Published 2024-12-24.

How severe is CVE-2022-21505?

Medium severity. CVSS v3 base score is 6.7 out of 10.

Is CVE-2022-21505 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Oracle Linux

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).

EPSS: 0.002 (10.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Oracle Linux — versions 7, 8, 9
Oracle Corporation Linux — versions Oracle Linux: 7, Oracle Linux: 8, Oracle Linux: 9

Weakness classification (CWE)

CWE-346 — Origin Validation Error

Public proof-of-concept exploits

xairy/unlockdown

References

secalert_us@oracle.com (issue-tracking, Broken Link)
secalert_us@oracle.com (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2022-21505?: CVE-2022-21505 is a medium-severity vulnerability in Oracle Linux, classified under Origin Validation Error. CVSS score: 6.7/10. Published 2024-12-24.
How severe is CVE-2022-21505?: Medium severity. CVSS v3 base score is 6.7 out of 10.
Is CVE-2022-21505 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.