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Alma Linux: CVE-2020-25632: Moderate: shim security update (ALSA-2021-1734)

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Alma Linux: CVE-2020-25632: Moderate: shim security update (ALSA-2021-1734)

Severity
7
CVSS
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
Published
03/03/2021
Created
05/05/2022
Added
05/04/2022
Modified
05/13/2022

Description

A flaw was found in grub2 in versions prior to 2.06. The rmmod implementation allows the unloading of a module used as a dependency without checking if any other dependent module is still loaded leading to a use-after-free scenario. This could allow arbitrary code to be executed or a bypass of Secure Boot protections. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Solution(s)

  • alma-upgrade-shim-aa64
  • alma-upgrade-shim-ia32
  • alma-upgrade-shim-unsigned-x64
  • alma-upgrade-shim-x64

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