Description
A flaw was found in grub2 in versions prior to 2.06. The rmmod implementation allows the unloading of a module used as a dependency without checking if any other dependent module is still loaded leading to a use-after-free scenario. This could allow arbitrary code to be executed or a bypass of Secure Boot protections. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Published: 2021-03-03
Score: 8.2 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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Tracking

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Advisories
Source ID Title
Debian DSA Debian DSA DSA-4867-1 grub2 security update
EUVD EUVD EUVD-2020-18303 A flaw was found in grub2 in versions prior to 2.06. The rmmod implementation allows the unloading of a module used as a dependency without checking if any other dependent module is still loaded leading to a use-after-free scenario. This could allow arbitrary code to be executed or a bypass of Secure Boot protections. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Ubuntu USN Ubuntu USN USN-4992-1 GRUB 2 vulnerabilities
History

Sun, 13 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.0004}

epss

{'score': 0.00045}


Subscriptions

Fedoraproject Fedora
Gnu Grub2
Netapp Ontap Select Deploy Administration Utility
Redhat Enterprise Linux Enterprise Linux Server Aus Enterprise Linux Server Eus Enterprise Linux Server Tus Enterprise Linux Workstation Rhel Aus Rhel E4s Rhel Eus Rhel Tus
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2024-08-04T15:40:35.453Z

Reserved: 2020-09-16T00:00:00.000Z

Link: CVE-2020-25632

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-03-03T17:15:11.660

Modified: 2024-11-21T05:18:17.340

Link: CVE-2020-25632

cve-icon Redhat

Severity : Moderate

Publid Date: 2021-03-02T18:00:00Z

Links: CVE-2020-25632 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses