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CVE-2024-45781

Date: February 18, 2025

A flaw was found in grub2. When reading a symbolic link's name from a UFS filesystem, grub2 fails to validate the string length taken as an input. The lack of validation may lead to a heap out-of-bounds write, causing data integrity issues and eventually allowing an attacker to circumvent secure boot protections.

Severity Score

Related Resources (6)

https://bugzilla.redhat.com/show_bug.cgi?id=2345857
https://nvd.nist.gov/vuln/detail/CVE-2024-45781
https://access.redhat.com/security/cve/CVE-2024-45781
https://access.redhat.com/errata/RHSA-2025:6990
https://access.redhat.com/errata/RHSA-2025:16154
https://www.mend.io/vulnerability-database/CVE-2024-45781

Severity Score

Weakness Type (CWE)

Out-of-bounds Write

CWE-787

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): HIGH
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

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