Rocky Linux: CVE-2022-28736: grub2,-mokutil,-shim,-and-shim-unsigned-x64 (Multiple Advisories)
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)
- rocky-upgrade-grub2-debuginfo
- rocky-upgrade-grub2-debugsource
- rocky-upgrade-grub2-efi-ia32
- rocky-upgrade-grub2-efi-ia32-cdboot
- rocky-upgrade-grub2-efi-x64
- rocky-upgrade-grub2-efi-x64-cdboot
- rocky-upgrade-grub2-pc
- rocky-upgrade-grub2-tools
- rocky-upgrade-grub2-tools-debuginfo
- rocky-upgrade-grub2-tools-efi
- rocky-upgrade-grub2-tools-efi-debuginfo
- rocky-upgrade-grub2-tools-extra
- rocky-upgrade-grub2-tools-extra-debuginfo
- rocky-upgrade-grub2-tools-minimal
- rocky-upgrade-grub2-tools-minimal-debuginfo
- rocky-upgrade-mokutil
- rocky-upgrade-mokutil-debuginfo
- rocky-upgrade-mokutil-debugsource
- rocky-upgrade-shim-ia32
- rocky-upgrade-shim-unsigned-x64
- rocky-upgrade-shim-x64
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