Expired Pointer Dereference Affecting grub2-tools-minimal package, versions <1:2.06-61.amzn2023.0.21


Severity

Recommended
0.0
medium
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.15% (5th percentile)

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  • Snyk IDSNYK-AMZN2023-GRUB2TOOLSMINIMAL-14903271
  • published9 Jan 2026
  • disclosed18 Nov 2025

Introduced: 18 Nov 2025

CVE-2025-54771  (opens in a new tab)
CWE-825  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 grub2-tools-minimal to version 1:2.06-61.amzn2023.0.21 or higher.
This issue was patched in ALAS2023-2025-1342.

NVD Description

Note: Versions mentioned in the description apply only to the upstream grub2-tools-minimal package and not the grub2-tools-minimal package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

A use-after-free vulnerability has been identified in the GNU GRUB (Grand Unified Bootloader). The flaw occurs because the file-closing process incorrectly retains a memory pointer, leaving an invalid reference to a file system structure. An attacker could exploit this vulnerability to cause grub to crash, leading to a Denial of Service. Possible data integrity or confidentiality compromise is not discarded.

CVSS Base Scores

version 3.1