CVE-2022-28735 - CVE House
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Status published Medium CVE-2022-28735

The GRUB2's shim_lock verifier allows non-kernel files to be loaded...

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Julian Andres Klode

References

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Affected Vendor

GNU Project

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Affected Software

GNU GRUB
Vulnerable Versions:
0

Timeline

Official Publish: July 20th, 2023
Last Modified: February 13th, 2025
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.