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).

References

https://linux.oracle.com/cve/CVE-2022-21505.html

https://git.kernel.org/linus/543ce63b664e2c2f9533d089a4664b559c3e6b5b

https://euvd.enisa.europa.eu/vulnerability/EUVD-2022-26729

https://cert-portal.siemens.com/productcert/html/ssa-794697.html

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

EPSS