Medium [CVE-2025-14104] Util-linux: util-linux: heap buffer overread in setpwnam when processing 256-byte usernames
This medium-severity Red Hat Linux advisory covers CVE-2025-14104 affecting Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9.
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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 password database.
Red Hat severity: Moderate — CVSS 6.1 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H). Weakness: CWE-125.
Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Ceph Storage 7; Red Hat Ceph Storage 8; Red Hat Ceph Storage 9; Red Hat Hardened Images; Red Hat Insights proxy 1.5; Red Hat Update Infrastructure 5; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat OpenShift Container Platform 4.
Will not fix / out of support: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat OpenShift Container Platform 4. Red Hat fixing advisory: RHSA-2026:1696, RHSA-2026:1852, RHSA-2026:1913, RHSA-2026:2800, RHSA-2026:2737, RHSA-2026:3406, RHSA-2026:7180, RHSA-2026:2485, RHSA-2026:2563, RHSA-2026:4943.
Affected products named by the advisory: Red Hat package: util-linux-ng.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
- util-linux-0:2.40.2-15.el10_1
- util-linux-0:2.32.1-48.el8_10
- util-linux-0:2.37.4-21.el9_7
- rhceph/rhceph-7-rhel9:1770632724
- rhceph/rhceph-8-rhel9:1770630907
- rhceph/rhceph-9-rhel9:1771816028
- util-linux-main-2.42-7.1.hum1
- insights-proxy/insights-proxy-container-rhel9:1770740405
- rhui5/installer-rhel9:1770646925
- rhui5/cds-rhel9:1773670073
- rhui5/haproxy-rhel9:1773672059
- rhui5/rhua-rhel9:1773670137
- RHSA-2026:1696
- RHSA-2026:1852
- RHSA-2026:1913
- RHSA-2026:2800
- RHSA-2026:2737
- RHSA-2026:3406
- RHSA-2026:7180
- RHSA-2026:2485
- RHSA-2026:2563
- RHSA-2026:4943
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
Mitigation checklist
- Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
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