A flaw was found in util-linux. Improper hostname canonicalization in the `login(1)` utility, when invoked with the `-h` option, can modify the supplied remote hostname before setting `PAM_RHOST`. A remote attacker could exploit this by providing a specially crafted hostname, potentially bypassing host-based Pluggable Authentication Modules (PAM) access control rules that rely on fully qualified domain names. This could lead to unauthorized access.
History

Fri, 03 Apr 2026 20:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 03 Apr 2026 19:00:00 +0000

Type Values Removed Values Added
Description No description is available for this CVE. A flaw was found in util-linux. Improper hostname canonicalization in the `login(1)` utility, when invoked with the `-h` option, can modify the supplied remote hostname before setting `PAM_RHOST`. A remote attacker could exploit this by providing a specially crafted hostname, potentially bypassing host-based Pluggable Authentication Modules (PAM) access control rules that rely on fully qualified domain names. This could lead to unauthorized access.
Title util-linux: util-linux: Access control bypass due to improper hostname canonicalization Util-linux: util-linux: access control bypass due to improper hostname canonicalization
First Time appeared Redhat
Redhat enterprise Linux
Redhat hummingbird
Redhat openshift
CPEs cpe:/a:redhat:hummingbird:1
cpe:/a:redhat:openshift:4
cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
Redhat hummingbird
Redhat openshift
References

Thu, 26 Feb 2026 13:30:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux util-linux
Vendors & Products Linux
Linux util-linux

Wed, 25 Feb 2026 12:15:00 +0000

Type Values Removed Values Added
Description No description is available for this CVE.
Title util-linux: util-linux: Access control bypass due to improper hostname canonicalization
Weaknesses CWE-289
References
Metrics threat_severity

None

cvssV3_1

{'score': 3.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N'}

threat_severity

Low


cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-04-08T13:34:50.167Z

Reserved: 2026-02-25T08:02:20.937Z

Link: CVE-2026-3184

cve-icon Vulnrichment

Updated: 2026-04-03T20:06:18.328Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-04-03T19:17:23.377

Modified: 2026-04-07T13:20:55.200

Link: CVE-2026-3184

cve-icon Redhat

Severity : Low

Publid Date: 2026-02-25T04:04:00Z

Links: CVE-2026-3184 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-02-26T13:18:30Z