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Debian: CVE-2020-25632: grub2 -- security update

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Debian: CVE-2020-25632: grub2 -- security update

Severity
7
CVSS
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
Published
03/04/2021
Created
03/05/2021
Added
03/04/2021
Modified
03/12/2021

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)

  • debian-upgrade-grub2

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