vulnerability
Ubuntu: USN-6355-1 (CVE-2022-28735): GRUB2 vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:L/AC:L/Au:S/C:C/I:C/A:C) | Jul 20, 2023 | Sep 18, 2023 | Jan 30, 2025 |
Severity
7
CVSS
(AV:L/AC:L/Au:S/C:C/I:C/A:C)
Published
Jul 20, 2023
Added
Sep 18, 2023
Modified
Jan 30, 2025
Description
The GRUB2's shim_lock verifier allows non-kernel files to be loaded on shim-powered secure boot systems. Allowing such files to be loaded may lead to unverified code and modules to be loaded in GRUB2 breaking the secure boot trust-chain.
Solution(s)
ubuntu-upgrade-grub-efi-amd64ubuntu-upgrade-grub-efi-amd64-binubuntu-upgrade-grub-efi-amd64-signedubuntu-upgrade-grub-efi-arm64ubuntu-upgrade-grub-efi-arm64-binubuntu-upgrade-grub-efi-arm64-signedubuntu-upgrade-shimubuntu-upgrade-shim-signed
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