CVE-2022-21505 Affecting kernel-macros package, versions <5.3.18-150300.59.90.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

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  • Snyk IDSNYK-SLES153-KERNELMACROS-2989976
  • published24 Aug 2022
  • disclosed23 Aug 2022

Introduced: 23 Aug 2022

CVE-2022-21505  (opens in a new tab)

How to fix?

Upgrade SLES:15.3 kernel-macros to version 5.3.18-150300.59.90.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-macros package and not the kernel-macros package as distributed by SLES. See How to fix? for SLES:15.3 relevant fixed versions and status.

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 Scores

version 3.1