CVE-2025-54771
Deferred Deferred - Pending Action
BaseFortify

Publication date: 2025-11-18

Last updated on: 2026-05-19

Assigner: Red Hat, Inc.

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.
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Meta Information
Published
2025-11-18
Last Modified
2026-05-19
Generated
2026-06-16
AI Q&A
2025-11-18
EPSS Evaluated
2026-06-14
NVD
CVE-2025-54771
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
gnu grub 3.1
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-825 The product dereferences a pointer that contains a location for memory that was previously valid, but is no longer valid.
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Executive Summary

This vulnerability is a use-after-free flaw in the GNU GRUB bootloader. It happens because when a file is closed, the process incorrectly keeps a pointer to memory that has already been freed, resulting in an invalid reference to a file system structure. This can be exploited by an attacker to cause the bootloader to crash.

Impact Analysis

Exploiting this vulnerability can cause the GNU GRUB bootloader to crash, leading to a Denial of Service (DoS). There is also a possibility, though not confirmed, that data integrity or confidentiality could be compromised.

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