Authentication Bypass Affecting libblkid package, versions <0:2.42-7.1.hum1


Severity

Recommended
0.0
low
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.44% (37th percentile)

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  • Snyk IDSNYK-RHEL10-LIBBLKID-16190588
  • published24 Apr 2026
  • disclosed25 Feb 2026

Introduced: 25 Feb 2026

CVE-2026-3184  (opens in a new tab)
CWE-289  (opens in a new tab)

How to fix?

Upgrade RHEL:10 libblkid to version 0:2.42-7.1.hum1 or higher.
This issue was patched in RHSA-2026:7180.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libblkid package and not the libblkid package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1