# CVE-2024-45782: Grub2: fs/hfs: strcpy() using the volume name (fs/hfs.c:382)

> A heap-based buffer overflow in GRUB2's HFS driver allows attackers to bypass Secure Boot protections via a crafted volume name.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 3 Mar 2025
- **Updated:** 21 Oct 2026
- **Also known as:** AZL-57666, AZL-57691, BELL-CVE-2024-45782, DEBIAN-CVE-2024-45782, GHSA-pgf7-qmfm-349p, UBUNTU-CVE-2024-45782

## What is CVE-2024-45782?

CVE-2024-45782 is a high-severity memory corruption vulnerability in Redhat Enterprise Linux, published on 3 Mar 2025. It can only be exploited from the same machine or local network, with no action from the victim.

### Official 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.

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

## Which versions are affected by CVE-2024-45782?

It affects 3 products.


Products: Gnu Grub2, Redhat Enterprise Linux, Redhat Openshift Container Platform.

## How do I fix CVE-2024-45782?

Apply the vendor's patch.

## Is CVE-2024-45782 being exploited?

There is no known exploitation of CVE-2024-45782 in the wild and no public exploit code.

## Other vulnerabilities in Redhat Enterprise Linux

- [CVE-2024-56737](https://insights.sbomify.com/CVE-2024-56737/): Memory corruption in GRUB2 (high 8.8)
- [CVE-2022-28733](https://insights.sbomify.com/CVE-2022-28733/): Integer underflow in grub_net_recv_ip4_packets (high 8.1)
- [CVE-2022-28734](https://insights.sbomify.com/CVE-2022-28734/): Out-of-bounds write when handling split HTTP headers (high 8.1)
- [CVE-2025-61662](https://insights.sbomify.com/CVE-2025-61662/): Grub2: missing unregister call for gettext command may lead to use-after-free (high 7.8)
- [CVE-2025-0678](https://insights.sbomify.com/CVE-2025-0678/): Grub2: squash4: integer overflow may lead to heap based out-of-bounds write when reading data (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-45782 and fix it if it is affected.

What it is: CVE-2024-45782 is a high-severity memory corruption vulnerability in Redhat Enterprise Linux, published on 3 Mar 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-2024-45782 in the wild and no public exploit code.

Affected product: Redhat Enterprise Linux. 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-2024-45782/ (Markdown: https://insights.sbomify.com/CVE-2024-45782/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-45782
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-45782
- OSV: https://osv.dev/vulnerability/CVE-2024-45782

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-45782/
Summaries are generated and may contain mistakes; the official description above is the record.