---
title: CVE-2024-57256
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2024-57256
---

# CVE-2024-57256

Publication date 18 February 2025

Last updated 23 February 2026

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**7.1 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2024-57256#impact-score)

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## Description

An integer overflow in ext4fs\_read\_symlink in Das U-Boot before 2025.01-rc1
occurs for zalloc (adding one to an le32 variable) via a crafted ext4
filesystem with an inode size of 0xffffffff, resulting in a malloc of zero
and resultant memory overwrite.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2024-57256#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| u-boot | 26.04 LTS resolute | Not affected |
| 25.10 questing | Not affected |
| 25.04 plucky | Ignored end of life, was needs-triage |
| 24.10 oracular | Ignored end of life, was needs-triage |
| 24.04 LTS noble | Fixed 2025.10-0ubuntu0.24.04.2 |
| 22.04 LTS jammy | Fixed 2022.01+dfsg-2ubuntu2.7 |
| 20.04 LTS focal | Needs evaluation |
| 18.04 LTS bionic | Needs evaluation |
| 16.04 LTS xenial | Needs evaluation |
| u-boot-nezha | 26.04 LTS resolute | Not in release |
| 25.10 questing | Not in release |
| 25.04 plucky | Ignored end of life, was needs-triage |
| 24.10 oracular | Ignored end of life, was needs-triage |
| 24.04 LTS noble | Needs evaluation |
| 22.04 LTS jammy | Needs evaluation |
| 20.04 LTS focal | Not in release |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)
* [Patch details](https://ubuntu.com/security/CVE-2024-57256#patch-details)

## Notes

---

### [mdeslaur](https://launchpad.net/~mdeslaur)

This issue is fixed in 2025.10 in noble-updates but is not yet
in the security pocket.

### Patch details

For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)

| Package | Patch details |
| --- | --- |
| u-boot | * Upstream:   [35f75d2](https://source.denx.de/u-boot/u-boot/-/commit/35f75d2a46e5859138c83a75cd2f4141c5479ab9) |

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

7.1 · High

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Physical |
  | Attack complexity | High |
  | Privileges required | None |
  | User interaction | None |
  | Scope | Changed |
  | Confidentiality impact | High |
  | Integrity impact | High |
  | Availability impact | High |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 7.1 · High |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-57256)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2024-57256)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2024-57256)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2024-57256)

### Related Ubuntu Security Notices (USN)

+ [USN-8056-1](https://usn.ubuntu.com/USN-8056-1)
+ U-Boot vulnerabilities
+ 23 February 2026

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2024-57256>
* <https://www.openwall.com/lists/oss-security/2025/02/17/2>