# CVE-2024-45776: Grub2: grub-core/gettext: integer overflow leads to heap oob write and read.

> An integer overflow in GRUB2 allows attackers to execute arbitrary code or bypass Secure Boot via a crafted .mo file.

- **Severity:** Medium 6.7 (`CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 18 Feb 2025
- **Updated:** 21 Oct 2026
- **Also known as:** AZL-56928, AZL-56989, BELL-CVE-2024-45776, DEBIAN-CVE-2024-45776, GHSA-8852-57vj-5pjq, UBUNTU-CVE-2024-45776

## What is CVE-2024-45776?

CVE-2024-45776 is a medium-severity vulnerability in Red Hat Enterprise Linux 10, published on 18 Feb 2025. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

When reading the language .mo file in grub_mofile_open(), grub2 fails to verify an integer overflow when allocating its internal buffer. A crafted .mo file may lead the buffer size calculation to overflow, leading to out-of-bound reads and writes. This flaw allows an attacker to leak sensitive data or overwrite critical data, possibly circumventing secure boot protections.

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2024-45776?


## How do I fix CVE-2024-45776?

Apply the vendor's patch.

## Is CVE-2024-45776 being exploited?

There is no known exploitation of CVE-2024-45776 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-45776 and fix it if it is affected.

What it is: CVE-2024-45776 is a medium-severity vulnerability in Red Hat Enterprise Linux 10, published on 18 Feb 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-45776 in the wild and no public exploit code.

Affected product: Red Hat Enterprise Linux 10. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2024-45776/ (Markdown: https://insights.sbomify.com/CVE-2024-45776/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-45776
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-45776
- OSV: https://osv.dev/vulnerability/CVE-2024-45776

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-45776/
Summaries are generated and may contain mistakes; the official description above is the record.