4.9

CVE-2025-54771

Grub2: use-after-free in grub_file_close()

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.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerGNU
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Produkt grub2
Default Statusunaffected
Version <= 2.14
Version 0
Status affected
HerstellerRed Hat
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Produkt Red Hat Enterprise Linux 10
Default Statusaffected
HerstellerRed Hat
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Produkt Red Hat Enterprise Linux 7
Default Statusaffected
HerstellerRed Hat
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Produkt Red Hat Enterprise Linux 8
Default Statusaffected
HerstellerRed Hat
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Produkt Red Hat Enterprise Linux 9
Default Statusaffected
HerstellerRed Hat
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Produkt Red Hat OpenShift Container Platform 4
Default Statusaffected
HerstellerRed Hat
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Produkt Red Hat OpenShift Container Platform 4
Default Statusaffected
VulnDex Vulnerability Enrichment
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EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.15% 0.045
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
RedHat 4.9 1.4 3.4
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
CWE-825 Expired Pointer Dereference

The product dereferences a pointer that contains a location for memory that was previously valid, but is no longer valid.

https://bugzilla.redhat.com/show_bug.cgi?id=2413823
http://www.openwall.com/lists/oss-security/2025/11/18/3
https://lists.gnu.org/archive/html/grub-devel/2025-11/msg00155.html
https://access.redhat.com/security/cve/CVE-2025-54771