Red Hat Security Advisory: util-linux security update
A heap buffer overread vulnerability exists in the util-linux package's setpwnam() function when processing 256-byte usernames (CVE-2025-14104). This affects various Red Hat Enterprise Linux 9 versions and related packages. The issue is rated as moderate severity by Red Hat Product Security. A security update addressing this vulnerability is available for affected Red Hat Enterprise Linux 9 distributions and related CodeReady Linux Builder packages. No known exploits are reported in the wild at this time.
AI Analysis
Technical Summary
The util-linux package, which provides essential low-level system utilities for Linux, contains a heap buffer overread vulnerability in the setpwnam() function when handling usernames of 256 bytes (CVE-2025-14104). This vulnerability affects multiple Red Hat Enterprise Linux 9 variants and associated packages. Red Hat has issued a security advisory (RHSA-2026:1913) and released updated packages to fix this issue. The vulnerability is categorized under CWE-125 (Out-of-bounds Read). No CVSS score is provided, but Red Hat rates the impact as moderate.
Potential Impact
The vulnerability could lead to a heap buffer overread when processing unusually long usernames, potentially causing application crashes or information disclosure. Red Hat rates the security impact as moderate. There are no known exploits in the wild currently. The affected systems include various architectures and editions of Red Hat Enterprise Linux 9 and CodeReady Linux Builder 9.
Mitigation Recommendations
Red Hat has released updated util-linux packages that address this vulnerability. Users of affected Red Hat Enterprise Linux 9 and related packages should apply the available security updates as detailed in Red Hat advisory RHSA-2026:1913 and the referenced update article (https://access.redhat.com/articles/11258). Patch status is confirmed by the vendor advisory. No additional mitigation steps are indicated beyond applying the official update.
Red Hat Security Advisory: util-linux security update
Description
A heap buffer overread vulnerability exists in the util-linux package's setpwnam() function when processing 256-byte usernames (CVE-2025-14104). This affects various Red Hat Enterprise Linux 9 versions and related packages. The issue is rated as moderate severity by Red Hat Product Security. A security update addressing this vulnerability is available for affected Red Hat Enterprise Linux 9 distributions and related CodeReady Linux Builder packages. No known exploits are reported in the wild at this time.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The util-linux package, which provides essential low-level system utilities for Linux, contains a heap buffer overread vulnerability in the setpwnam() function when handling usernames of 256 bytes (CVE-2025-14104). This vulnerability affects multiple Red Hat Enterprise Linux 9 variants and associated packages. Red Hat has issued a security advisory (RHSA-2026:1913) and released updated packages to fix this issue. The vulnerability is categorized under CWE-125 (Out-of-bounds Read). No CVSS score is provided, but Red Hat rates the impact as moderate.
Potential Impact
The vulnerability could lead to a heap buffer overread when processing unusually long usernames, potentially causing application crashes or information disclosure. Red Hat rates the security impact as moderate. There are no known exploits in the wild currently. The affected systems include various architectures and editions of Red Hat Enterprise Linux 9 and CodeReady Linux Builder 9.
Mitigation Recommendations
Red Hat has released updated util-linux packages that address this vulnerability. Users of affected Red Hat Enterprise Linux 9 and related packages should apply the available security updates as detailed in Red Hat advisory RHSA-2026:1913 and the referenced update article (https://access.redhat.com/articles/11258). Patch status is confirmed by the vendor advisory. No additional mitigation steps are indicated beyond applying the official update.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:1913
- Cve Count
- 1
- Additional Cves
- []
- Cvss Version
- null
Threat ID: 6a1f4e86e29bf47b5007f22c
Added to database: 6/2/2026, 9:43:34 PM
Last enriched: 6/2/2026, 9:59:08 PM
Last updated: 6/3/2026, 4:34:34 AM
Views: 2
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