---
title: "CVE-2025-0840\n    | Ubuntu"
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-2025-0840?format=md
keywords: index, follow
---

# CVE-2025-0840

Publication date 29 January 2025

Last updated 1 December 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**5.0 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2025-0840?format=md#impact-score)

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## Description

A vulnerability, which was classified as problematic, was found in GNU
Binutils up to 2.43. This affects the function disassemble\_bytes of the
file binutils/objdump.c. The manipulation of the argument buf leads to
stack-based buffer overflow. It is possible to initiate the attack
remotely. The complexity of an attack is rather high. The exploitability is
told to be difficult. The exploit has been disclosed to the public and may
be used. Upgrading to version 2.44 is able to address this issue. The
identifier of the patch is baac6c221e9d69335bf41366a1c7d87d8ab2f893. It is
recommended to upgrade the affected component.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2025-0840?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| binutils | 25.10 questing | Not affected |
| 25.04 plucky | Not affected |
| 24.10 oracular | Fixed 2.43.1-4ubuntu1.1 |
| 24.04 LTS noble | Fixed 2.42-4ubuntu2.4 |
| 22.04 LTS jammy | Fixed 2.38-4ubuntu2.7 |
| 20.04 LTS focal | Fixed 2.34-6ubuntu1.10 |
| 18.04 LTS bionic | Fixed 2.30-21ubuntu1~18.04.9+esm4  Ubuntu Pro |
| 16.04 LTS xenial | Fixed 2.26.1-1ubuntu1~16.04.8+esm11  Ubuntu Pro |
| 14.04 LTS trusty | Fixed 2.24-5ubuntu14.2+esm7  Ubuntu Pro |

---

* [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-2025-0840?format=md#patch-details)

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## Notes

---

### [seth-arnold](https://launchpad.net/~seth-arnold)

binutils isn't safe for untrusted inputs.

### 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 |
| --- | --- |
| binutils | * Upstream:   <https://sourceware.org/git/?p=binutils-gdb.git;a=patch;h=baac6c221e9d69335bf41366a1c7d87d8ab2f893> |

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

5.0 · Medium

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | High |
  | Privileges required | None |
  | User interaction | Required |
  | Scope | Unchanged |
  | Confidentiality impact | Low |
  | Integrity impact | Low |
  | Availability impact | Low |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 5.0 · Medium |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-0840)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2025-0840)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2025-0840)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2025-0840)

### Related Ubuntu Security Notices (USN)

+ [USN-7306-1](https://usn.ubuntu.com/USN-7306-1)
+ GNU binutils vulnerabilities
+ 26 February 2025

+ [USN-7423-2](https://usn.ubuntu.com/USN-7423-2)
+ GNU binutils vulnerabilities
+ 29 April 2025

+ [USN-7899-1](https://usn.ubuntu.com/USN-7899-1)
+ GNU binutils vulnerabilities
+ 1 December 2025

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2025-0840>
* <https://sourceware.org/bugzilla/show_bug.cgi?id=32560>
* <https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=baac6c221e9d69335bf41366a1c7d87d8ab2f893>
* <https://sourceware.org/bugzilla/attachment.cgi?id=15882>
* <https://vuldb.com/?ctiid.293997>
* <https://vuldb.com/?id.293997>
* <https://vuldb.com/?submit.485255>
* <https://www.gnu.org/>