Vulnerability 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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://access.redhat.com/security/cve/CVE-2025-54771
- https://bugzilla.redhat.com/show_bug.cgi?id=2413823
- https://lists.gnu.org/archive/html/grub-devel/2025-11/msg00155.html
- http://www.openwall.com/lists/oss-security/2025/11/18/3
FAQ
What is CVE-2025-54771?
CVE-2025-54771 is a vulnerability with a CVSS score of 4.9 (MEDIUM). 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...
How severe is CVE-2025-54771?
CVE-2025-54771 has been rated MEDIUM with a CVSS base score of 4.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-54771?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.