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CVE-2025-54771

Grub2: use-after-free in grub_file_close()

Published: Nov 18, 2025Updated: Jun 30, 2026 Sources: CVE List NVD BDUCWE-825
4.9MEDIUM
NVD MITRE
EPSS Score
0.1%
Top 97.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:LAC:HPR:NUI:NS:UC:LI:LA:L
Exploitability
AV:LAttack Vector
Local
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:LAvailability
Low
Open in CVSS calculator →

Weaknesses

CWE-825

Affected Products

Red Hat Inc.
commercial·USaka Red Hat
Red Hat Enterprise Linux 10On-premOS
Operating Systems / linux-distro
Red Hat OpenShift Container PlatformOn-prem
Operating Systems / linux-distro
Red Hat OpenShift Container Platform 4SaaSSaaS Service
Cloud & SaaS / container-orchestration
ООО «РусБИТех-Астра»
commercial·RUaka rusbitech-astra
Astra Linux Special EditionOn-premOS
Operating Systems / linux-distro
ООО «Ред Софт»
commercial·RUaka red soft
РЕД ОСOn-premOS
Operating Systems / linux-distro
АО «СберТех»
commercial·RUaka сбертех, ao sbertech
Platform V SberLinux OS ServerOn-premOS
Operating Systems / linux-distro
Erich Boleyn
individual-devaka grub
Grub2On-prem
Operating Systems
GNU
oss-project·USaka g. nu
grub2
OSS Libraries
and 4 more affected products View all →

Exploitability

Official Patch Available
Workaround Available
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References

https://access.redhat.com/security/cve/cve-2025-54771
access.redhat.com
https://www.openwall.com/lists/oss-security/2025/11/18/3
openwall.com
https://redos.red-soft.ru/search/?iblock_id=24&q=CVE-2025-54771
redos.red-soft.ru
and 7 more references View all →
News mentions
Could not load news mentions.

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