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Vulnerability record · CVE-2024-45782 · published 3 March 2025

CVE-2024-45782: Gnu grub2 out-of-bounds write vulnerability

Gnu · Grub2

A flaw was found in the HFS filesystem. When reading an HFS volume's name at grub_fs_mount(), the HFS filesystem driver performs a strcpy() using the user-provided volume name as input without properly validating the volume name's length. This issue may read to a heap-based out-of-bounds writer, impacting grub's sensitive data integrity and eventually leading to a secure boot protection bypass.

7.8 CVSS 3.1 High EPSS 0.22% · top 88.1% CWE-787 · Out-of-bounds write
7.8CVSS 3.1 base score
0.22%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
2References
29 Jun 2026Last modified by NVD

Description

A flaw was found in the HFS filesystem. When reading an HFS volume's name at grub_fs_mount(), the HFS filesystem driver performs a strcpy() using the user-provided volume name as input without properly validating the volume name's length. This issue may read to a heap-based out-of-bounds writer, impacting grub's sensitive data integrity and eventually leading to a secure boot protection bypass.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://access.redhat.com/security/cve/CVE-2024-45782 Broken Link
https://bugzilla.redhat.com/show_bug.cgi?id=2345858 Issue Tracking

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Source: NIST National Vulnerability Database (record CVE-2024-45782), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.