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Affected Component
Analysis
util-linux
Patched
Name
CVE-2026-3184
Description
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.
CWEs
Published Date
Updated Date
Workaround
-
Advisories
https://access.redhat.com/errata/RHSA-2026:7180Third Party Advisory
https://access.redhat.com/security/cve/CVE-2026-3184Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2442570Issue Tracking
Analysis#
Vulnerability Ratings#
3.7
CVSSv31
5.3
CVSSv31
NaN
other
Others affected components#
Name
Project
Project Version
Version
Status
buildroot
2025.02.x
2.40.4
Not Affected
buildroot
2025.02.x
2.40.4
Not Affected
buildroot
master
2.41.5
Not Affected
buildroot
master
2.41.5
Not Affected
openwrt
master
2.42.2-r1
Not Affected
openwrt
openwrt-25.12
2.41.5-r1
Not Affected
yocto
kirkstone
2.37.4
Not Affected
yocto
master
2.42.4
Not Affected
Resolved with patches#
util-linux (yocto:scarthgap)
#
Title
Author
Resolve
1
login: use original FQDN for PAM_RHOST
Karel Zak <kzak@redhat.com>
CVE-2026-3184