CVE-2025-61663 — Expired Pointer Dereference in Grub2

CWE-825 — Expired Pointer Dereference7 documents7 sources
Severity
4.9MEDIUMNVD
EPSS
0.0%
top 94.69%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
GNU Grub2
Timeline
PublishedNov 18

Description

A vulnerability has been identified in the GRUB2 bootloader's normal command that poses an immediate Denial of Service (DoS) risk. This flaw is a Use-after-Free issue, caused because the normal command is not properly unregistered when the module is unloaded. An attacker who can execute this command can force the system to access memory locations that are no longer valid. Successful exploitation leads directly to system instability, which can result in a complete crash and halt system availabili…

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:LExploitability: 1.4 | Impact: 3.4

Affected Packages1 packages

▶CVEListV5gnu/grub22.14

🔴Vulnerability Details

3
GHSA
GHSA-jf88-7285-jch4: A vulnerability has been identified in the GRUB2 bootloader's normal command that poses an immediate Denial of Service (DoS) risk↗2025-11-18
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OSV
CVE-2025-61663: A vulnerability has been identified in the GRUB2 bootloader's normal command that poses an immediate Denial of Service (DoS) risk↗2025-11-18
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CVEList
Grub2: missing unregister call for normal commands may lead to use-after-free↗2025-11-18
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📋Vendor Advisories

3
Red Hat
grub2: Missing unregister call for normal commands may lead to use-after-free↗2025-11-18
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Microsoft
Grub2: missing unregister call for normal commands may lead to use-after-free↗2025-11-11
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Debian
CVE-2025-61663: grub2 - A vulnerability has been identified in the GRUB2 bootloader's normal command tha...↗2025
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CVE-2025-61663 — Expired Pointer Dereference in Grub2 | cvebase