CVE-2022-28735 Affecting grub2 package, versions <1:2.02-0.87.0.21.el7_9.9


Severity

Recommended
0.0
high
0
10

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.04% (5th percentile)

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  • Snyk IDSNYK-ORACLE7-GRUB2-2862580
  • published8 Jun 2022
  • disclosed20 Jul 2023

Introduced: 8 Jun 2022

CVE-2022-28735  (opens in a new tab)

How to fix?

Upgrade Oracle:7 grub2 to version 1:2.02-0.87.0.21.el7_9.9 or higher.
This issue was patched in ELSA-2022-9469.

NVD Description

Note: Versions mentioned in the description apply only to the upstream grub2 package and not the grub2 package as distributed by Oracle. See How to fix? for Oracle:7 relevant fixed versions and status.

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.

CVSS Scores

version 3.1