CVE-2022-21505

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).

Reserved 2021-11-15 | Published 2024-12-24 | Updated 2024-12-27 | Assigner oracle

Problem types

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).

Product status

Oracle Linux: 7
affected

Oracle Linux: 8
affected

Oracle Linux: 9
affected

References

git.kernel.org/...s/543ce63b664e2c2f9533d089a4664b559c3e6b5b (Github commit) issue-tracking

linux.oracle.com/cve/CVE-2022-21505.html (Oracle Advisory) vendor-advisory

cve.org (CVE-2022-21505)

nvd.nist.gov (CVE-2022-21505)

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