Grub2: use-after-free in grub_file_close()_CVE-2025-54771

4.9 / 10

MEDIUM

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

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.

Basic Information

ID CVE-2025-54771

Source redhat

Published Nov 18, 2025 at 18:20

Modified Nov 18, 2025 at 22:03

Affected Product

Vendor Red Hat

Product Red Hat Enterprise Linux 10

CWE Classification

CWE-825

References

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    "published": "2025-11-18T18:20:40.350Z",
    "modified": "2025-11-18T22:03:41.773Z",
    "type": "cve",
    "title": "Grub2: use-after-free in grub_file_close()",
    "source": "redhat",
    "references": "https://access.redhat.com/security/cve/CVE-2025-54771\nhttps://bugzilla.redhat.com/show_bug.cgi?id=2413823",
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