CVE-2025-54771

Summary

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.

Affected Software

Weaknesses

• CWE-825: Expired Pointer Dereference

Workarounds

There's no known mitigation available for this vulnerability.

ADP Enrichment

CVE Program Container

Additional References

• http://www.openwall.com/lists/oss-security/2025/11/18/3

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: partial

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

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