CVE-2025-54771

MEDIUM

GNU GRUB2 < 2.14 - Use-After-Free in File System Structure Handling

Title source: llm

Description

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.

References (4)

Core 4

Core References

Mailing List

http://www.openwall.com/lists/oss-security/2025/11/18/3

Vendor Advisory vdb-entry x_refsource_redhat

https://access.redhat.com/security/cve/CVE-2025-54771

Issue Tracking issue-tracking x_refsource_redhat

https://bugzilla.redhat.com/show_bug.cgi?id=2413823

https://lists.gnu.org/archive/html/grub-devel/2025-11/msg00155.html

Scores

CVSS v3 4.9

EPSS 0.0013

EPSS Percentile 2.5%

Attack Vector LOCAL

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-825

Status published

Products (6)

GNU/grub2 < 2.14

Red Hat/Red Hat Enterprise Linux 10

Red Hat/Red Hat Enterprise Linux 7

Red Hat/Red Hat Enterprise Linux 8

Red Hat/Red Hat Enterprise Linux 9

Red Hat/Red Hat OpenShift Container Platform 4

Published Nov 18, 2025

Tracked Since Feb 18, 2026