CVE-2025-54771
4.9 MEDIUMA use-after-free vulnerability has been identified in the GNU GRUB (Grand Unified Bootloader)
Published: 2025-11-18 · Last updated: 2026-05-19
Severity and scoring
- CVSS
- 4.9 MEDIUM
- Vector
- CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
- CWE
- CWE-825
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.
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2025-54771
- [Other]https://access.redhat.com/security/cve/CVE-2025-54771
- [Other]https://bugzilla.redhat.com/show_bug.cgi?id=2413823
- [Other]https://lists.gnu.org/archive/html/grub-devel/2025-11/msg00155.html
- [Other]http://www.openwall.com/lists/oss-security/2025/11/18/3
Related CVEs
Same CWE
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- CVE-2026-34001 — A flaw was found in the X.Org X server (7.8 HIGH)
- CVE-2025-61664 — A vulnerability in the GRUB2 bootloader has been identified in the normal module (4.9 MEDIUM)
- CVE-2025-54770 — A vulnerability has been identified in the GRUB2 bootloader's network module that poses an immediate Denial of Service (DoS) risk (4.9 MEDIUM)
- CVE-2025-49795 — A NULL pointer dereference vulnerability was found in libxml2 when processing XPath XML expressions (7.5 HIGH)