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.
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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2025-11-18T18:20:40.350Z

Updated: 2025-11-19T21:41:06.871Z

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