vulnerability

Alma Linux: CVE-2022-28736: Important: grub2, mokutil, shim, and shim-unsigned-x64 security update (Multiple Advisories)

Severity
7
CVSS
(AV:L/AC:L/Au:S/C:C/I:C/A:C)
Published
2022-06-16
Added
2022-08-24
Modified
2025-01-30

Description

There's a use-after-free vulnerability in grub_cmd_chainloader() function; The chainloader command is used to boot up operating systems that doesn't support multiboot and do not have direct support from GRUB2. When executing chainloader more than once a use-after-free vulnerability is triggered. If an attacker can control the GRUB2's memory allocation pattern sensitive data may be exposed and arbitrary code execution can be achieved.

Solution(s)

alma-upgrade-grub2-commonalma-upgrade-grub2-efi-aa64alma-upgrade-grub2-efi-aa64-cdbootalma-upgrade-grub2-efi-aa64-modulesalma-upgrade-grub2-efi-ia32alma-upgrade-grub2-efi-ia32-cdbootalma-upgrade-grub2-efi-ia32-modulesalma-upgrade-grub2-efi-x64alma-upgrade-grub2-efi-x64-cdbootalma-upgrade-grub2-efi-x64-modulesalma-upgrade-grub2-pcalma-upgrade-grub2-pc-modulesalma-upgrade-grub2-ppc64lealma-upgrade-grub2-ppc64le-modulesalma-upgrade-grub2-toolsalma-upgrade-grub2-tools-efialma-upgrade-grub2-tools-extraalma-upgrade-grub2-tools-minimalalma-upgrade-shim-aa64alma-upgrade-shim-ia32alma-upgrade-shim-unsigned-x64alma-upgrade-shim-x64
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