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CVE-2025-61662— Grub2: missing unregister call for gettext command may lead to use-after-free

Quick assessment

Affected
GNU grub2
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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gettext模块释放后重用，可能导致拒绝服务或数据泄露。

CVSS 7.8 · High EPSS 0.20% · P11

Possible ATT&CK Techniques 1 AI

T1499.002 · Service Exhaustion Flood

Affected Version Matrix 26

VendorProduct Version RangeStatus
GNU grub2 ≤ 2.14 affected
Red Hat Red Hat Enterprise Linux 10 1:2.12-29.el10_1.2< * unaffected
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 1:2.12-15.el10_0.2< * unaffected
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support 1:2.02-0.87.el7_9.16< * unaffected
Red Hat Red Hat Enterprise Linux 8 1:2.02-170.el8_10.1< * unaffected
Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support 1:2.02-87.el8_2.14< * unaffected
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 1:2.02-99.el8_4.13< * unaffected
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 1:2.02-99.el8_4.13< * unaffected
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 1:2.02-123.el8_6.19< * unaffected
Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service 1:2.02-123.el8_6.19< * unaffected
Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions 1:2.02-123.el8_6.19< * unaffected
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service 1:2.02-152.el8_8.3< * unaffected
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 1:2.02-152.el8_8.3< * unaffected
Red Hat Red Hat Enterprise Linux 9 1:2.06-114.el9_7.1< * unaffected
Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions 1:2.06-27.el9_0.23< * unaffected
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 1:2.06-61.el9_2.11< * unaffected
Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support 1:2.06-86.el9_4.4< * unaffected
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support 1:2.06-105.el9_6.1< * unaffected
Red Hat Red Hat OpenShift Container Platform 4.12 412.86.202604010116-0< * unaffected
Red Hat Red Hat OpenShift Container Platform 4.13 413.92.202604080111-0< * unaffected
Red Hat Red Hat OpenShift Container Platform 4.14 414.92.202605060243-0< * unaffected
Red Hat Red Hat OpenShift Container Platform 4.15 415.92.202605060220-0< * unaffected
Red Hat Red Hat OpenShift Container Platform 4.16 416.94.202604211449-0< * unaffected
Red Hat Red Hat OpenShift Container Platform 4.17 417.94.202605112123-0< * unaffected
Red Hat Red Hat OpenShift Container Platform 4.18 418.94.202603181125-0< * unaffected
Red Hat Red Hat OpenShift Container Platform 4.19 4.19.9.6.202604080618-0< * unaffected
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I. Basic Information for CVE-2025-61662

Vulnerability Information
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Vulnerability Title
Grub2: missing unregister call for gettext command may lead to use-after-free
Source: CVE Program / CVE List V5
Vulnerability Description
A Use-After-Free vulnerability has been discovered in GRUB's gettext module. This flaw stems from a programming error where the gettext command remains registered in memory after its module is unloaded. An attacker can exploit this condition by invoking the orphaned command, causing the application to access a memory location that is no longer valid. 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: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
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gettext模块释放后重用，可能导致拒绝服务或数据泄露。
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 1:2.12-29.el10_1.2 ~ * cpe:/o:redhat:enterprise_linux:10.1
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 1:2.12-15.el10_0.2 ~ * cpe:/o:redhat:enterprise_linux_eus:10.0
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support 1:2.02-0.87.el7_9.16 ~ * cpe:/o:redhat:rhel_els:7
Red Hat Red Hat Enterprise Linux 8 1:2.02-170.el8_10.1 ~ * cpe:/o:redhat:enterprise_linux:8::baseos
Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support 1:2.02-87.el8_2.14 ~ * cpe:/o:redhat:rhel_aus:8.2::baseos
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 1:2.02-99.el8_4.13 ~ * cpe:/o:redhat:rhel_aus:8.4::baseos
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 1:2.02-99.el8_4.13 ~ * cpe:/o:redhat:rhel_aus:8.4::baseos
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 1:2.02-123.el8_6.19 ~ * cpe:/o:redhat:rhel_aus:8.6::baseos
Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service 1:2.02-123.el8_6.19 ~ * cpe:/o:redhat:rhel_aus:8.6::baseos
Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions 1:2.02-123.el8_6.19 ~ * cpe:/o:redhat:rhel_aus:8.6::baseos
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service 1:2.02-152.el8_8.3 ~ * cpe:/o:redhat:rhel_e4s:8.8::baseos
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 1:2.02-152.el8_8.3 ~ * cpe:/o:redhat:rhel_e4s:8.8::baseos
Red Hat Red Hat Enterprise Linux 9 1:2.06-114.el9_7.1 ~ * cpe:/o:redhat:enterprise_linux:9::baseos
Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions 1:2.06-27.el9_0.23 ~ * cpe:/o:redhat:rhel_e4s:9.0::baseos
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 1:2.06-61.el9_2.11 ~ * cpe:/o:redhat:rhel_e4s:9.2::baseos
Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support 1:2.06-86.el9_4.4 ~ * cpe:/o:redhat:rhel_eus:9.4::baseos
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support 1:2.06-105.el9_6.1 ~ * cpe:/o:redhat:rhel_eus:9.6::baseos
Red Hat Red Hat OpenShift Container Platform 4.12 412.86.202604010116-0 ~ * cpe:/a:redhat:openshift:4.12::el8
Red Hat Red Hat OpenShift Container Platform 4.13 413.92.202604080111-0 ~ * cpe:/a:redhat:openshift:4.13::el9
Red Hat Red Hat OpenShift Container Platform 4.14 414.92.202605060243-0 ~ * cpe:/a:redhat:openshift:4.14::el9
Red Hat Red Hat OpenShift Container Platform 4.15 415.92.202605060220-0 ~ * cpe:/a:redhat:openshift:4.15::el9
Red Hat Red Hat OpenShift Container Platform 4.16 416.94.202604211449-0 ~ * cpe:/a:redhat:openshift:4.16::el9
Red Hat Red Hat OpenShift Container Platform 4.17 417.94.202605112123-0 ~ * cpe:/a:redhat:openshift:4.17::el9
Red Hat Red Hat OpenShift Container Platform 4.18 418.94.202603181125-0 ~ * cpe:/a:redhat:openshift:4.18::el9
Red Hat Red Hat OpenShift Container Platform 4.19 4.19.9.6.202604080618-0 ~ * cpe:/a:redhat:openshift:4.19::el9

II. Public POCs for CVE-2025-61662

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III. Intelligence Information for CVE-2025-61662

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Vendor Advisories for CVE-2025-61662 (22)

Mailing List Discussions for CVE-2025-61662 (1)

Same Patch Batch · GNU · 2025-11-18 · 6 CVEs total

CVE-2025-61663 4.9 MEDIUM Grub2: missing unregister call for normal commands 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
Same vendor: GNU

V. Comments for CVE-2025-61662

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