Medium
Util-linux: util-linux: heap buffer overread in setpwnam() when processing 256-byte usernames
Type: advisorySources: OSV
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2025-14104
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 03:24 UTC · Revision 1
Source evidence
Util-linux: util-linux: heap buffer overread in setpwnam() when processing 256-byte usernames
core-osv · Original sourcePublished 5 Dec 2025, 16:22 UTC
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.
osv:CVE-2025-14104
Complete source record
{
"id": "7f9788eb59c4ec73b59b41fff1d1d2b2bfcef9e372f2864ae795d4bfbcc813ee",
"url": "https://osv.dev/vulnerability/CVE-2025-14104",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Util-linux: util-linux: heap buffer overread in setpwnam() when processing 256-byte usernames",
"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.",
"evidence": "osv:CVE-2025-14104",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2025-14104",
"aliases": [
"CVE-2025-14104"
],
"metrics": [
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"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H"
}
],
"affected": [
{
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{
"repo": "https://github.com/util-linux/util-linux",
"type": "GIT",
"events": [
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{
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}
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"v2.14-rc3",
"v2.14-rc2",
"v2.14-rc1",
"v2.13",
"v2.13-rc3",
"v2.13-rc2",
"v2.13-rc1",
"v2.13-pre7",
"v2.13-pre6",
"v2.13-pre5",
"v2.13-pre4",
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-14104.json"
}
}
],
"modified": "2026-10-28T02:30:25.496597883Z",
"provider": "osv",
"references": [
"https://access.redhat.com/downloads/content/package-browser/",
"https://catalog.redhat.com/software/containers/",
"https://access.redhat.com/errata/RHSA-2026:1696",
"https://access.redhat.com/errata/RHSA-2026:1852",
"https://access.redhat.com/errata/RHSA-2026:1913",
"https://access.redhat.com/errata/RHSA-2026:2485",
"https://access.redhat.com/errata/RHSA-2026:2563",
"https://access.redhat.com/errata/RHSA-2026:2737",
"https://access.redhat.com/errata/RHSA-2026:2800",
"https://access.redhat.com/errata/RHSA-2026:3406",
"https://access.redhat.com/errata/RHSA-2026:4943",
"https://access.redhat.com/errata/RHSA-2026:7180",
"https://access.redhat.com/errata/RHSA-2026:82347",
"https://access.redhat.com/errata/RHSA-2026:82354",
"https://access.redhat.com/errata/RHSA-2026:82372",
"https://access.redhat.com/errata/RHSA-2026:82857",
"https://access.redhat.com/security/cve/CVE-2025-14104",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/14xxx/CVE-2025-14104.json",
"https://nvd.nist.gov/vuln/detail/CVE-2025-14104",
"https://bugzilla.redhat.com/show_bug.cgi?id=2419369",
"https://github.com/util-linux/util-linux"
],
"provider_metadata": {
"cwe_ids": [
"CWE-125"
],
"cna_assigner": "redhat",
"unresolved_ranges": [
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"fixed": "0:2.40.2-15.el10_1"
},
{
"fixed": "0:2.32.1-48.el8_10"
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{
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],
"source": "AFFECTED_FIELD",
"strategy": "InverseAffectedRanges"
}
]
}
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/14xxx/CVE-2025-14104.json"
}
},
"related_cves": [
{
"value": "CVE-2025-14104",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 492163,
"published_at": "2025-12-05T16:22:09.283+00:00"
}