Upstream information

CVE-2026-27456 at MITRE

Description

util-linux is a random collection of Linux utilities. Prior to version 2.41.4, a TOCTOU (Time-of-Check-Time-of-Use) vulnerability has been identified in the SUID binary /usr/bin/mount from util-linux. The mount binary, when setting up loop devices, validates the source file path with user privileges via fork() + setuid() + realpath(), but subsequently re-canonicalizes and opens it with root privileges (euid=0) without verifying that the path has not been replaced between both operations. Neither O_NOFOLLOW, nor inode comparison, nor post-open fstat() are employed. This allows a local unprivileged user to replace the source file with a symlink pointing to any root-owned file or device during the race window, causing the SUID binary to open and mount it as root. Exploitation requires an /etc/fstab entry with user,loop options whose path points to a directory where the attacker has write permission, and that /usr/bin/mount has the SUID bit set (the default configuration on virtually all Linux distributions). The impact is unauthorized read access to root-protected files and block devices, including backup images, disk volumes, and any file containing a valid filesystem. This issue has been patched in version 2.41.4.

SUSE information

Overall state of this security issue: Pending

This issue is currently rated as having moderate severity.

CVSS v3 Scores
CVSS detail CNA (GitHub) SUSE
Base Score 4.7 4.7
Vector CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack Vector Local Local
Attack Complexity High High
Privileges Required Low Low
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact High High
Integrity Impact None None
Availability Impact None None
CVSSv3 Version 3.1 3.1
SUSE Bugzilla entry: 1261606 [NEW]

No SUSE Security Announcements cross referenced.

Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s) Source package State
Products under general support and receiving all security fixes.
SLES15-SP5-CHOST-BYOS-SAP-CCloud util-linux Affected
SLES15-SP6-CHOST-BYOS util-linux Affected
SLES15-SP6-CHOST-BYOS-Aliyun util-linux Affected
SLES15-SP6-CHOST-BYOS-Azure util-linux Affected
SLES15-SP6-CHOST-BYOS-EC2 util-linux Affected
SLES15-SP6-CHOST-BYOS-GCE util-linux Affected
SLES15-SP6-CHOST-BYOS-GDC util-linux Affected
SLES15-SP6-CHOST-BYOS-SAP-CCloud util-linux Affected
SLES15-SP7-CHOST-BYOS-Aliyun util-linux Affected
SLES15-SP7-CHOST-BYOS-Azure util-linux Affected
SLES15-SP7-CHOST-BYOS-EC2 util-linux Affected
SLES15-SP7-CHOST-BYOS-GCE util-linux Affected
SLES15-SP7-CHOST-BYOS-GDC util-linux Affected
SLES15-SP7-CHOST-BYOS-SAP-CCloud util-linux Affected
SUSE Linux Enterprise Desktop 15 SP7 util-linux Affected
SUSE Linux Enterprise High Performance Computing 15 SP7 util-linux Affected
SUSE Linux Enterprise Micro 5.2 util-linux Affected
SUSE Linux Enterprise Micro 5.3 util-linux Affected
SUSE Linux Enterprise Micro 5.4 util-linux Affected
SUSE Linux Enterprise Micro 5.5 util-linux Affected
SUSE Linux Enterprise Module for Basesystem 15 SP7 util-linux Affected
SUSE Linux Enterprise Module for Server Applications 15 SP7 util-linux Affected
SUSE Linux Enterprise Server 15 SP7 util-linux Affected
SUSE Linux Enterprise Server 16.0 util-linux Affected
SUSE Linux Enterprise Server 16.1 util-linux Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP7 util-linux Affected
SUSE Linux Enterprise Server for SAP applications 16.0 util-linux Affected
SUSE Linux Enterprise Server for SAP applications 16.1 util-linux Affected
SUSE Linux Micro 6.0 util-linux Affected
SUSE Linux Micro 6.1 util-linux Affected
SUSE Linux Micro 6.2 util-linux Affected
openSUSE Leap 15.6 util-linux Affected
Products under Long Term Service Pack support and receiving important and critical security fixes.
SLES15-SP3-CHOST-BYOS-Aliyun util-linux Affected
SLES15-SP3-CHOST-BYOS-Azure util-linux Affected
SLES15-SP3-CHOST-BYOS-EC2 util-linux Affected
SLES15-SP3-CHOST-BYOS-GCE util-linux Affected
SLES15-SP3-CHOST-BYOS-SAP-CCloud util-linux Affected
SLES15-SP4-CHOST-BYOS util-linux Affected
SLES15-SP4-CHOST-BYOS-Aliyun util-linux Affected
SLES15-SP4-CHOST-BYOS-Azure util-linux Affected
SLES15-SP4-CHOST-BYOS-EC2 util-linux Affected
SLES15-SP4-CHOST-BYOS-GCE util-linux Affected
SLES15-SP4-CHOST-BYOS-SAP-CCloud util-linux Affected
SLES15-SP5-CHOST-BYOS-Aliyun util-linux Affected
SLES15-SP5-CHOST-BYOS-Azure util-linux Affected
SLES15-SP5-CHOST-BYOS-EC2 util-linux Affected
SLES15-SP5-CHOST-BYOS-GCE util-linux Affected
SLES15-SP5-CHOST-BYOS-GDC util-linux Affected
SUSE Linux Enterprise High Performance Computing 15 SP4 util-linux Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS util-linux Affected
SUSE Linux Enterprise High Performance Computing 15 SP5 util-linux Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS util-linux Affected
SUSE Linux Enterprise Module for Basesystem 15 SP4 util-linux Affected
SUSE Linux Enterprise Module for Basesystem 15 SP5 util-linux Affected
SUSE Linux Enterprise Module for Basesystem 15 SP6 util-linux Affected
SUSE Linux Enterprise Server 12 SP5 util-linux Affected
SUSE Linux Enterprise Server 12 SP5-LTSS util-linux Affected
SUSE Linux Enterprise Server 12 SP5-LTSS Extended Security util-linux Affected
SUSE Linux Enterprise Server 15 SP4 util-linux Affected
SUSE Linux Enterprise Server 15 SP4-LTSS util-linux Affected
SUSE Linux Enterprise Server 15 SP5 util-linux Affected
SUSE Linux Enterprise Server 15 SP5-LTSS util-linux Affected
SUSE Linux Enterprise Server 15 SP6 util-linux Affected
SUSE Linux Enterprise Server 15 SP6-LTSS util-linux Affected
SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 util-linux Affected
SUSE Linux Enterprise Server for SAP Applications 12 SP5 util-linux Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP6 util-linux Affected
SUSE Manager Proxy 4.3 util-linux Affected
SUSE Manager Proxy LTS 4.3 util-linux Affected
SUSE Manager Retail Branch Server 4.3 util-linux Affected
SUSE Manager Retail Branch Server LTS 4.3 util-linux Affected
SUSE Manager Server 4.3 util-linux Affected
SUSE Manager Server LTS 4.3 util-linux Affected
Products past their end of life and not receiving proactive updates anymore.
HPE Helion OpenStack 8 util-linux Affected
SUSE CaaS Platform 3.0 util-linux Affected
SUSE CaaS Platform 4.0 util-linux Affected
SUSE Enterprise Storage 6 util-linux Affected
SUSE Enterprise Storage 7 util-linux Affected
SUSE Enterprise Storage 7.1 util-linux Affected
SUSE Linux Enterprise Desktop 12 SP3 util-linux Affected
SUSE Linux Enterprise Desktop 12 SP4 util-linux Affected
SUSE Linux Enterprise Desktop 15 SP1 util-linux Affected
SUSE Linux Enterprise Desktop 15 SP2 util-linux Affected
SUSE Linux Enterprise Desktop 15 SP3 util-linux Affected
SUSE Linux Enterprise Desktop 15 SP4 util-linux Affected
SUSE Linux Enterprise Desktop 15 SP5 util-linux Affected
SUSE Linux Enterprise Desktop 15 SP6 util-linux Affected
SUSE Linux Enterprise High Performance Computing 15 SP1 util-linux Affected
SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS util-linux Affected
SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS util-linux Affected
SUSE Linux Enterprise High Performance Computing 15 SP2 util-linux Affected
SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS util-linux Affected
SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS util-linux Affected
SUSE Linux Enterprise High Performance Computing 15 SP3 util-linux Affected
SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS util-linux Affected
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS util-linux Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS util-linux Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS util-linux Affected
SUSE Linux Enterprise High Performance Computing 15 SP6 util-linux Affected
SUSE Linux Enterprise Micro 5.0 util-linux Affected
SUSE Linux Enterprise Micro 5.1 util-linux Affected
SUSE Linux Enterprise Module for Basesystem 15 SP1 util-linux Affected
SUSE Linux Enterprise Module for Basesystem 15 SP2 util-linux Affected
SUSE Linux Enterprise Module for Basesystem 15 SP3 util-linux Affected
SUSE Linux Enterprise Real Time 15 SP2 util-linux Affected
SUSE Linux Enterprise Real Time 15 SP3 util-linux Affected
SUSE Linux Enterprise Real Time 15 SP4 util-linux Affected
SUSE Linux Enterprise Server 12 SP3 util-linux Affected
SUSE Linux Enterprise Server 12 SP3-BCL util-linux Affected
SUSE Linux Enterprise Server 12 SP3-ESPOS util-linux Affected
SUSE Linux Enterprise Server 12 SP3-LTSS util-linux Affected
SUSE Linux Enterprise Server 12 SP4 util-linux Affected
SUSE Linux Enterprise Server 12 SP4-ESPOS util-linux Affected
SUSE Linux Enterprise Server 12 SP4-LTSS util-linux Affected
SUSE Linux Enterprise Server 15 SP1 util-linux Affected
SUSE Linux Enterprise Server 15 SP1-BCL util-linux Affected
SUSE Linux Enterprise Server 15 SP1-LTSS util-linux Affected
SUSE Linux Enterprise Server 15 SP2 util-linux Affected
SUSE Linux Enterprise Server 15 SP2-BCL util-linux Affected
SUSE Linux Enterprise Server 15 SP2-LTSS util-linux Affected
SUSE Linux Enterprise Server 15 SP3 util-linux Affected
SUSE Linux Enterprise Server 15 SP3-BCL util-linux Affected
SUSE Linux Enterprise Server 15 SP3-LTSS util-linux Affected
SUSE Linux Enterprise Server for SAP Applications 12 SP3 util-linux Affected
SUSE Linux Enterprise Server for SAP Applications 12 SP4 util-linux Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP1 util-linux Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP2 util-linux Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP3 util-linux Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP4 util-linux Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP5 util-linux Affected
SUSE Linux Enterprise Software Development Kit 12 SP3 util-linux Affected
SUSE Linux Enterprise Software Development Kit 12 SP4 util-linux Affected
SUSE Linux Enterprise Software Development Kit 12 SP5 util-linux Affected
SUSE Linux Enterprise Workstation Extension 12 SP3 util-linux Affected
SUSE Linux Enterprise Workstation Extension 12 SP4 util-linux Affected
SUSE Linux Enterprise Workstation Extension 12 SP5 util-linux Affected
SUSE Manager Proxy 4.0 util-linux Affected
SUSE Manager Proxy 4.1 util-linux Affected
SUSE Manager Proxy 4.2 util-linux Affected
SUSE Manager Retail Branch Server 4.0 util-linux Affected
SUSE Manager Retail Branch Server 4.1 util-linux Affected
SUSE Manager Retail Branch Server 4.2 util-linux Affected
SUSE Manager Server 4.0 util-linux Affected
SUSE Manager Server 4.1 util-linux Affected
SUSE Manager Server 4.2 util-linux Affected
SUSE OpenStack Cloud 8 util-linux Affected
SUSE OpenStack Cloud 9 util-linux Affected
SUSE OpenStack Cloud Crowbar 8 util-linux Affected
SUSE OpenStack Cloud Crowbar 9 util-linux Affected
openSUSE Leap 15.3 util-linux Affected
openSUSE Leap 15.4 util-linux Affected
openSUSE Leap 15.5 util-linux Affected
openSUSE Leap Micro 5.2 util-linux Affected
openSUSE Leap Micro 5.3 util-linux Affected
openSUSE Leap Micro 5.4 util-linux Affected
openSUSE Leap Micro 5.5 util-linux Affected
Products at an unknown state of their lifecycle.
SLES-CHOST-BYOS-Aliyun util-linux Affected
SLES-CHOST-BYOS-Azure util-linux Affected
SLES-CHOST-BYOS-EC2 util-linux Affected
SLES-CHOST-BYOS-GCE util-linux Affected
SLES-CHOST-BYOS-GDC util-linux Affected
SLES-CHOST-BYOS-SAP-CCloud util-linux Affected
Container Status
bci/bci-init:15.3
bci/bci-init:15.4
bci/bci-init:15.5
bci/bci-sle15-kernel-module-devel:15.5
bci/dotnet-aspnet
bci/dotnet-aspnet:3.1
bci/dotnet-aspnet:5.0
bci/dotnet-aspnet:6.0
bci/dotnet-runtime
bci/dotnet-runtime:3.1
bci/dotnet-runtime:5.0
bci/dotnet-runtime:6.0
bci/dotnet-sdk
bci/dotnet-sdk:3.1
bci/dotnet-sdk:5.0
bci/dotnet-sdk:6.0
bci/golang
bci/golang:1.16
bci/golang:1.17
bci/golang:1.18
bci/golang:1.19
bci/kiwi
bci/node:12
bci/node:14
bci/node:16
bci/nodejs
bci/openjdk
bci/openjdk-devel
bci/openjdk-devel:11
bci/openjdk-devel:17
bci/openjdk:11
bci/php-apache:8
bci/php-fpm:8
bci/php:8
bci/python
bci/python:3
bci/ruby
bci/rust
bci/rust:1.56
bci/rust:1.59
bci/rust:1.60
bci/rust:1.61
bci/rust:1.62
bci/rust:1.63
bci/rust:1.64
bci/rust:1.65
bci/rust:1.66
bci/rust:1.67
bci/rust:1.68
containers/lmcache-vllm-openai:0
containers/open-webui:0
containers/vllm-openai:0
kiwi-templates-Minimal
kiwi-templates-Minimal-Cloud-sap
kiwi-templates-Minimal-MS-HyperV-sap
kiwi-templates-Minimal-VMware-sap
kiwi-templates-Minimal-kvm-and-xen-sap
private-registry/harbor-db
private-registry/harbor-registry
private-registry/harbor-registryctl
rancher/elemental-builder-image/5.3
rancher/elemental-operator
rancher/elemental-operator/5.3
rancher/elemental-teal-iso/5.3
rancher/elemental-teal-iso/5.4
rancher/elemental-teal-rt/5.3
rancher/elemental-teal-rt/5.4
rancher/elemental-teal/5.3
rancher/elemental-teal/5.4
rancher/seedimage-builder
rancher/seedimage-builder/5.3
ses/6/cephcsi/cephcsi
ses/6/rook/ceph
ses/7.1/ceph/grafana
ses/7.1/ceph/haproxy
ses/7.1/ceph/keepalived
ses/7.1/ceph/prometheus-alertmanager
ses/7.1/ceph/prometheus-node-exporter
ses/7.1/ceph/prometheus-server
ses/7.1/ceph/prometheus-snmp_notifier
ses/7.1/cephcsi/cephcsi
ses/7.1/cephcsi/csi-attacher:v4.1.0
ses/7.1/cephcsi/csi-node-driver-registrar:v2.7.0
ses/7.1/cephcsi/csi-provisioner:v3.4.0
ses/7.1/cephcsi/csi-resizer:v1.7.0
ses/7.1/cephcsi/csi-snapshotter:v6.2.1
ses/7.1/rook/ceph
ses/7/ceph/ceph
ses/7/ceph/grafana
ses/7/ceph/prometheus-alertmanager
ses/7/ceph/prometheus-node-exporter
ses/7/ceph/prometheus-server
ses/7/cephcsi/cephcsi
ses/7/cephcsi/csi-attacher:v2.1.0
ses/7/cephcsi/csi-attacher:v3.3.0
ses/7/cephcsi/csi-livenessprobe:v1.1.0
ses/7/cephcsi/csi-node-driver-registrar:v1.2.0
ses/7/cephcsi/csi-node-driver-registrar:v2.3.0
ses/7/cephcsi/csi-provisioner:v1.6.0
ses/7/cephcsi/csi-provisioner:v3.0.0
ses/7/cephcsi/csi-resizer:v0.4.0
ses/7/cephcsi/csi-resizer:v1.3.0
ses/7/cephcsi/csi-snapshotter:v2.1.0
ses/7/cephcsi/csi-snapshotter:v2.1.1
ses/7/cephcsi/csi-snapshotter:v4.2.0
ses/7/prometheus-webhook-snmp
ses/7/rook/ceph
suse/389-ds
suse/hpc/warewulf4-x86_64/sle-hpc-node
suse/kiosk/firefox-esr:esr
suse/kiosk/pulseaudio:17
suse/kiosk/xorg:21
suse/ltss/sle12.5/sles12sp5
suse/manager/4.3/proxy-httpd
suse/manager/4.3/proxy-salt-broker
suse/manager/5.0/x86_64/proxy-httpd
suse/manager/5.0/x86_64/proxy-salt-broker
suse/manager/5.0/x86_64/server
suse/manager/5.0/x86_64/server-hub-xmlrpc-api
suse/mariadb:10.11
suse/multi-linux-manager/5.1/x86_64/proxy-httpd
suse/multi-linux-manager/5.1/x86_64/proxy-salt-broker
suse/multi-linux-manager/5.1/x86_64/server
suse/multi-linux-manager/5.1/x86_64/server-hub-xmlrpc-api
suse/multi-linux-manager/5.1/x86_64/server-saline
suse/multi-linux-manager/5.2/x86_64/proxy-httpd
suse/multi-linux-manager/5.2/x86_64/server
suse/multi-linux-manager/5.2/x86_64/server-hub-xmlrpc-api
suse/multi-linux-manager/5.2/x86_64/server-saline
suse/pcp
suse/pcp:5
suse/pcp:6
suse/postgres
suse/postgres:10
suse/postgres:12
suse/postgres:13
suse/postgres:14
suse/postgres:15
suse/postgres:16
suse/registry
suse/registry:2.8
suse/rmt-mariadb
suse/rmt-mariadb-client
suse/rmt-nginx
suse/rmt-server
suse/sle-micro-rancher/5.2
suse/sle-micro-rancher/5.3
suse/sle-micro-rancher/5.4
suse/sle-micro/5.0/toolbox
suse/sle-micro/5.1/toolbox
suse/sle-micro/5.2/toolbox
suse/sle-micro/5.3/toolbox
suse/sle-micro/5.4/toolbox
suse/sle-micro/5.5
suse/sle-micro/5.5/toolbox
suse/sle-micro/base-5.5
suse/sle-micro/kvm-5.5
suse/sle-micro/rt-5.5
suse/sle15:15.1
suse/sle15:15.2
suse/sle15:15.3
suse/sle15:15.4
suse/sle15:15.5
suse/sles/15.2/virt-api:0.38.1
suse/sles/15.2/virt-controller:0.38.1
suse/sles/15.2/virt-handler:0.38.1
suse/sles/15.2/virt-launcher:0.38.1
suse/sles/15.2/virt-operator:0.38.1
suse/sles/15.3/cdi-apiserver:1.37.1
suse/sles/15.3/cdi-cloner:1.37.1
suse/sles/15.3/cdi-controller:1.37.1
suse/sles/15.3/cdi-importer:1.37.1
suse/sles/15.3/cdi-operator:1.37.1
suse/sles/15.3/cdi-uploadproxy:1.37.1
suse/sles/15.3/cdi-uploadserver:1.37.1
suse/sles/15.3/libguestfs-tools:0.45.0
suse/sles/15.3/virt-api:0.45.0
suse/sles/15.3/virt-controller:0.45.0
suse/sles/15.3/virt-handler:0.45.0
suse/sles/15.3/virt-launcher:0.45.0
suse/sles/15.3/virt-operator:0.45.0
suse/sles/15.4/cdi-apiserver:1.43.0
suse/sles/15.4/cdi-cloner:1.43.0
suse/sles/15.4/cdi-controller:1.43.0
suse/sles/15.4/cdi-importer:1.43.0
suse/sles/15.4/cdi-operator:1.43.0
suse/sles/15.4/cdi-uploadproxy:1.43.0
suse/sles/15.4/cdi-uploadserver:1.43.0
suse/sles/15.4/libguestfs-tools:0.49.0
suse/sles/15.4/virt-api:0.49.0
suse/sles/15.4/virt-controller:0.49.0
suse/sles/15.4/virt-handler:0.49.0
suse/sles/15.4/virt-launcher:0.49.0
suse/sles/15.4/virt-operator:0.49.0
suse/sles/15.5/cdi-apiserver:1.55.0
suse/sles/15.5/cdi-cloner:1.55.0
suse/sles/15.5/cdi-controller:1.55.0
suse/sles/15.5/cdi-importer:1.55.0
suse/sles/15.5/cdi-operator:1.55.0
suse/sles/15.5/cdi-uploadproxy:1.55.0
suse/sles/15.5/cdi-uploadserver:1.55.0
suse/sles/15.5/libguestfs-tools:0.58.0
suse/sles/15.5/virt-api:0.58.0
suse/sles/15.5/virt-controller:0.58.0
suse/sles/15.5/virt-exportproxy:0.58.0
suse/sles/15.5/virt-exportserver:0.58.0
suse/sles/15.5/virt-handler:0.58.0
suse/sles/15.5/virt-launcher:0.58.0
suse/sles/15.5/virt-operator:0.58.0
suse/sles/15.6/cdi-cloner:1.58.0
suse/sles/15.6/cdi-importer:1.58.0
suse/sles/15.6/cdi-uploadserver:1.58.0
suse/sles/15.6/libguestfs-tools:1.1.1
suse/sles/15.6/virt-handler:1.1.1
suse/sles/15.6/virt-launcher:1.1.1
suse/sles/15.7/cdi-cloner:1.58.0
suse/sles/15.7/cdi-importer:1.58.0
suse/sles/15.7/cdi-uploadserver:1.58.0
suse/sles/15.7/libguestfs-tools:1.5.0
suse/sles/15.7/virt-handler:1.5.0
suse/sles/15.7/virt-launcher:1.5.0
suse/sles12sp3
suse/sles12sp4
suse/sles12sp5
trento/trento-db
trento/trento-runner
trento/trento-wanda
trento/trento-web		 util-linuxAffected

SUSE Timeline for this CVE

CVE page created: Sat Apr 4 02:00:29 2026
CVE page last modified: Tue Apr 7 18:28:58 2026