🛡️ CVE-2024-45780 — grub2

🟡 CVSS 6.7 — Medium ✅ No Known Exploit CWE-787 NVD

6.7

CVSS Score

0 Low4 Medium7 High9 Critical10

Description

A flaw was found in grub2. When reading tar files, grub2 allocates an internal buffer for the file name. However, it fails to properly verify the allocation against possible integer overflows. It's possible to cause the allocation length to overflow with a crafted tar file, leading to a heap out-of-bounds write. This flaw eventually allows an attacker to circumvent secure boot protections.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs administrative privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2024-45780 is classified as CWE-787: Out-of-bounds Write. Data is written past the end or before the start of a buffer, corrupting whatever is stored there.

Affected software

CVE-2024-45780 is recorded against 1 package.

grub2 (fixed in 2.12)

Timeline and source

Published on 3 March 2025 and last revised on 29 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

access.redhat.com
bugzilla.redhat.com
lists.gnu.org

CVE-2024-45780 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

BellSoft Debian Ubuntu

Details

Severity MEDIUM

CVSS Score 6.7

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

CWE CWE-787

Public Exploit ✅ No

Source NVD

Published 2025-03-03

Updated 2026-08-11

Modified 2026-06-29

Fix URL N/A

Affected Packages

Software	From version	Fixed in
grub2	—	2.12

References

Third Party Advisory https://access.redhat.com/security/cve/CVE-2024-45780

Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=2345856

Mailing List https://lists.gnu.org/archive/html/grub-devel/2025-02/msg00024.html

🔗 NVD 🔗 Mitre

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