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Vulnerability · Published Feb 18, 2025 · Assigned by redhat

CVE-2025-0622Grub2: command/gpg: use-after-free due to hooks not being removed on module unload

Medium 6.4

In plain English

A medium-severity use-after-free in grub2. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 21% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.4Medium
Exploit odds (30 days)0.3%top 79.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

A flaw was found in command/gpg. In some scenarios, hooks created by loaded modules are not removed when the related module is unloaded. This flaw allows an attacker to force grub2 to call the hooks once the module that registered it was unloaded, leading to a use-after-free vulnerability. If correctly exploited, this vulnerability may result in arbitrary code execution, eventually allowing the attacker to bypass secure boot protections.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:10grub2-common1:2.12-15.el10_0.alma.1ALSA-2025:16154
AlmaLinux:9grub2-common1:2.06-104.el9_6.alma.1ALSA-2025:6990
AlmaLinux:9grub2-efi-aa641:2.06-104.el9_6.alma.1ALSA-2025:6990
AlmaLinux:9grub2-efi-aa64-cdboot1:2.06-104.el9_6.alma.1ALSA-2025:6990
AlmaLinux:10grub2-efi-aa64-modules1:2.12-15.el10_0.alma.1ALSA-2025:16154
AlmaLinux:9grub2-efi-aa64-modules1:2.06-104.el9_6.alma.1ALSA-2025:6990
AlmaLinux:9grub2-efi-x641:2.06-104.el9_6.alma.1ALSA-2025:6990
AlmaLinux:9grub2-efi-x64-cdboot1:2.06-104.el9_6.alma.1ALSA-2025:6990
AlmaLinux:10grub2-efi-x64-modules1:2.12-15.el10_0.alma.1ALSA-2025:16154
AlmaLinux:9grub2-efi-x64-modules1:2.06-104.el9_6.alma.1ALSA-2025:6990
AlmaLinux:9grub2-pc1:2.06-104.el9_6.alma.1ALSA-2025:6990
AlmaLinux:10grub2-pc-modules1:2.12-15.el10_0.alma.1ALSA-2025:16154
AlmaLinux:9grub2-pc-modules1:2.06-104.el9_6.alma.1ALSA-2025:6990
AlmaLinux:9grub2-ppc64le1:2.06-104.el9_6.alma.1ALSA-2025:6990
AlmaLinux:10grub2-ppc64le-modules1:2.12-15.el10_0.alma.1ALSA-2025:16154
AlmaLinux:9grub2-ppc64le-modules1:2.06-104.el9_6.alma.1ALSA-2025:6990
AlmaLinux:9grub2-tools1:2.06-104.el9_6.alma.1ALSA-2025:6990
AlmaLinux:9grub2-tools-efi1:2.06-104.el9_6.alma.1ALSA-2025:6990
AlmaLinux:9grub2-tools-extra1:2.06-104.el9_6.alma.1ALSA-2025:6990
AlmaLinux:9grub2-tools-minimal1:2.06-104.el9_6.alma.1ALSA-2025:6990
Debian:12grub22.06-13+deb12u2DEBIAN-CVE-2025-0622
Debian:13grub22.12-6DEBIAN-CVE-2025-0622
Debian:14grub22.12-6DEBIAN-CVE-2025-0622
Rocky Linux:10grub21:2.12-15.el10_0RLSA-2025:16154
Rocky Linux:9grub21:2.06-104.el9_6RLSA-2025:6990
Ubuntu:22.04:LTSgrub2-signedno fix listedUBUNTU-CVE-2025-0622
Ubuntu:24.04:LTSgrub2-signedno fix listedUBUNTU-CVE-2025-0622
Ubuntu:25.10grub2-signedno fix listedUBUNTU-CVE-2025-0622
Ubuntu:26.04:LTSgrub2-signedno fix listedUBUNTU-CVE-2025-0622
Ubuntu:26.10grub2-signedno fix listedUBUNTU-CVE-2025-0622
Ubuntu:22.04:LTSgrub2-unsignedno fix listedUBUNTU-CVE-2025-0622
Ubuntu:24.04:LTSgrub2-unsignedno fix listedUBUNTU-CVE-2025-0622
Ubuntu:25.10grub2-unsignedno fix listedUBUNTU-CVE-2025-0622
Ubuntu:26.04:LTSgrub2-unsignedno fix listedUBUNTU-CVE-2025-0622
Ubuntu:26.10grub2-unsignedno fix listedUBUNTU-CVE-2025-0622

Affected products (as reported)

VendorProductVersions
grub2 0 – through 2.12
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 7 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat OpenShift Container Platform 4 see references

Weakness: CWE-416 · Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

References