Out-of-bounds Write Affecting grub2-efi-x64-cdboot package, versions <1:2.06-104.el9_6


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.03% (7th percentile)

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  • Snyk IDSNYK-RHEL9-GRUB2EFIX64CDBOOT-10125299
  • published14 May 2025
  • disclosed18 Feb 2025

Introduced: 18 Feb 2025

CVE-2024-45781  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade RHEL:9 grub2-efi-x64-cdboot to version 1:2.06-104.el9_6 or higher.
This issue was patched in RHSA-2025:6990.

NVD Description

Note: Versions mentioned in the description apply only to the upstream grub2-efi-x64-cdboot package and not the grub2-efi-x64-cdboot package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

A flaw was found in grub2. When reading a symbolic link's name from a UFS filesystem, grub2 fails to validate the string length taken as an input. The lack of validation may lead to a heap out-of-bounds write, causing data integrity issues and eventually allowing an attacker to circumvent secure boot protections.

CVSS Base Scores

version 3.1