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.
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

There's no known mitigation available for this vulnerability.

History

Wed, 19 Nov 2025 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 19 Nov 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Tue, 18 Nov 2025 22:30:00 +0000

Type Values Removed Values Added
References

Tue, 18 Nov 2025 18:30:00 +0000

Type Values Removed Values Added
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.
Title Grub2: use-after-free in grub_file_close()
First Time appeared Redhat
Redhat enterprise Linux
Redhat openshift
Weaknesses CWE-825
CPEs cpe:/a:redhat:openshift:4
cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
Redhat openshift
References
Metrics cvssV3_1

{'score': 4.9, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2025-12-19T16:33:49.140Z

Reserved: 2025-07-28T21:53:43.851Z

Link: CVE-2025-54771

cve-icon Vulnrichment

Updated: 2025-11-18T22:03:41.773Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-11-18T19:15:49.420

Modified: 2025-11-19T19:14:59.327

Link: CVE-2025-54771

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-11-18T00:00:00Z

Links: CVE-2025-54771 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses