Vulnerability 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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://access.redhat.com/errata/RHSA-2025:16154
- https://access.redhat.com/errata/RHSA-2025:6990
- https://access.redhat.com/security/cve/CVE-2025-0622
- https://bugzilla.redhat.com/show_bug.cgi?id=2345865
- https://lists.gnu.org/archive/html/grub-devel/2025-02/msg00024.html
FAQ
What is CVE-2025-0622?
CVE-2025-0622 is a vulnerability with a CVSS score of 6.4 (MEDIUM). 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 o...
How severe is CVE-2025-0622?
CVE-2025-0622 has been rated MEDIUM with a CVSS base score of 6.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-0622?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.