Use-After-Free Vulnerability in GNU GRUB by Red Hat
CVE-2025-54771

4.9MEDIUM

Key Information:

Vendor

Gnu
Status
Grub2
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Vendor
CVE Published:
18 November 2025

What is CVE-2025-54771?

A use-after-free vulnerability has been detected in the GNU GRUB (Grand Unified Bootloader). This issue arises due to an error in the file-closing procedure, which incorrectly maintains a memory pointer, creating an invalid reference to a file system structure. An attacker may exploit this flaw to trigger a crash in GRUB, resulting in a Denial of Service. Additionally, there are concerns about potential impacts on data integrity and confidentiality.

Affected Version(s)

grub2 0 <= 2.14

References

https://access.redhat.com/security/cve/CVE-2025-54771
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2413823
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
4.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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