---
id: CVE-2025-14104
title: A flaw was found in util-linux
summary: >-
  A flaw was found in util-linux. This vulnerability allows a heap buffer
  overread when processing 256-byte usernames, specifically within the
  `setpwnam()` function, affecting SUID (Set User ID) login-utils utilities
  writing to the passwor…
severity: medium
cvss: 6.1
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H'
cwe:
  - CWE-125
published: '2025-12-05'
updated: '2026-06-25'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-14104'
references:
  - url: 'https://access.redhat.com/errata/RHSA-2026:1696'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:1852'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:1913'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:2485'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:2563'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:2737'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:2800'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:3406'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:4943'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:7180'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/security/cve/CVE-2025-14104'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2419369'
    label: secalert@redhat.com
tags:
  - nvd
epss: 0.00193
epssPercentile: 0.07971
ingestedAt: '2026-06-29T13:24:34.616Z'
---

## Overview

A flaw was found in util-linux. This vulnerability allows a heap buffer overread when processing 256-byte usernames, specifically within the `setpwnam()` function, affecting SUID (Set User ID) login-utils utilities writing to the password database.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.