CVE-2025-61663— Grub2: missing unregister call for normal commands may lead to use-after-free
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I. Basic Information for CVE-2025-61663
Vulnerability Information
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Vulnerability Title
Grub2: missing unregister call for normal commands may lead to use-after-free
Source: NVD (National Vulnerability Database)
Vulnerability 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 An attacker who can execute this command can force the system to access memory locations that are no longer valid.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 availability. Impact on the data integrity and confidentiality is also not discarded.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
无效指针解引用
Source: NVD (National Vulnerability Database)
Vulnerability Title
GNU GRUB 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GNU GRUB是GNU社区的一款Linux系统引导程序。 GNU GRUB存在安全漏洞，该漏洞源于normal命令释放后重用，可能导致拒绝服务或系统崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| GNU | grub2 | 0 ~ 2.14 | - | |
| Red Hat | Red Hat Enterprise Linux 10 | - | cpe:/o:redhat:enterprise_linux:10 | |
| Red Hat | Red Hat Enterprise Linux 7 | - | cpe:/o:redhat:enterprise_linux:7 | |
| Red Hat | Red Hat Enterprise Linux 8 | - | cpe:/o:redhat:enterprise_linux:8 | |
| Red Hat | Red Hat Enterprise Linux 9 | - | cpe:/o:redhat:enterprise_linux:9 | |
| Red Hat | Red Hat OpenShift Container Platform 4 | - | cpe:/a:redhat:openshift:4 |
II. Public POCs for CVE-2025-61663
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|---|
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Same Patch Batch · GNU · 2025-11-18 · 6 CVEs total
| CVE-2025-61662 | 7.8 HIGH | Grub2: missing unregister call for gettext command may lead to use-after-free |
| CVE-2025-61664 | 4.9 MEDIUM | Grub2: missing unregister call for normal_exit command may lead to use-after-free |
| CVE-2025-54770 | 4.9 MEDIUM | Grub2: use-after-free in net_set_vlan |
| CVE-2025-54771 | 4.9 MEDIUM | Grub2: use-after-free in grub_file_close() |
| CVE-2025-61661 | 4.8 MEDIUM | Grub2: grub2: out-of-bounds write via malicious usb device |
IV. Related Vulnerabilities
Same product: grub2
- CVE-2025-54770
Grub2: use-after-free in net_set_vlan - CVE-2025-61664
Grub2: missing unregister call for normal_exit command may l - CVE-2025-61662
Grub2: missing unregister call for gettext command may lead - CVE-2025-61661
Grub2: grub2: out-of-bounds write via malicious usb device - CVE-2025-54771
Grub2: use-after-free in grub_file_close()
Same weakness: CWE-825
- CVE-2026-7111
Text::CSV_XS versions before 1.62 for Perl have a use-after- - CVE-2026-34001
Xorg: xwayland: x.org x server: use-after-free vulnerability - CVE-2026-35094
Libinput: libinput: information disclosure via dangling poin - CVE-2026-5165
Virtio-win: virtio-win: memory corruption via use-after-free - CVE-2026-2436
Libsoup: libsoup: denial of service via use-after-free in so
V. Comments for CVE-2025-61663
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