util-linux security update

An update is available for util-linux. This update affects Rocky Linux 10. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list The util-linux packages contain a large variety of low-level system...

RLSA-2026:93461 Important: util-linux security update

The util-linux packages contain a large variety of low-level system utilities that are necessary for a Linux system to function. Among others, these include the fdisk configuration tool and the login program. Security Fixes: util-linux: TOCTOU in the mount program when setting up loop devices...

util-linux: util-linux: heap use-after-free in libblkid nested partition probing

A flaw was found in the libblkid library of util-linux. During nested partition probing, the BSD, Minix, Solaris x86, and UnixWare partition probers cache a raw pointer to a parent partition entry in a dynamically allocated array. When subsequent partition additions cause the array to be...

util-linux: TOCTOU in the mount program when setting up loop devices

A flaw was found in util-linux. When an /etc/fstab entry is configured with the user,loop options, the mount program checks the file path with user permissions but later opens it with root privileges. This creates a brief Time-of-Check-Time-of-Use TOCTOU window where an attacker can substitute th...

util-linux: util-linux: nsenter --join-cgroup leaks root cgroup migration authority

The nsenter --join-cgroup option opens the target cgroup.procs file as root and leaves that file descriptor open across later namespace and credential changes and across execve. Because the kernel checks later cgroup migrations using the credentials from the original open, a program run in an...

Important: Red Hat Security Advisory: util-linux security update

An update for util-linux is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability fr...

util-linux: util-linux: Partition metadata compromise via integer overflow in DOS partition parser

A flaw was found in util-linux. An integer overflow vulnerability in the partition parsing library libblkid fails to properly enforce boundary checks on extended partition entries. A local attacker could exploit this flaw by presenting a crafted disk image or removable storage device for probing,...

util-linux: util-linux: failed external mount helper still runs privileged X-mount post-hooks

When an external mount. helper runs but exits with a nonzero status, libmount still treats the helper invocation as successful and runs privileged post-mount hooks. A local unprivileged user with an /etc/fstab entry that uses the user option together with X-mount.idmap or X-mount.owner/group/mode...

util-linux: util-linux: TOCTOU in the mount program when applying post-mount ownership/mode changes

A flaw was found in util-linux. When an /etc/fstab entry uses the user option together with X-mount.owner, X-mount.group, or X-mount.mode, mount8 changes ownership or permissions on the mount target after mounting without re-verifying the path. A local unprivileged user can exploit this...

util-linux: util-linux: restricted bind mounts do not pin the source, allowing X-mount.owner/group/mode redirection

A flaw was found in util-linux. Restricted bind mounts take the source path from fstab but do not pin that source before the privileged mount. A local unprivileged user who can replace the authorized source or a writable ancestor can redirect SUID mount8 to bind another host directory. If the fst...

util-linux: TOCTOU in the mount program via ancestor directory swap on target path

When an /etc/fstab entry is configured with the user or users option, mount8 validates the target path before performing the mount syscall, creating a Time-of-Check-Time-of-Use TOCTOU window. A local unprivileged user with write access to an ancestor directory of the mount target can swap that...

util-linux: util-linux: SUID mount(8) allows nosuid/noexec bypass via LIBMOUNT_FORCE_MOUNT2

A flaw was found in util-linux. The mount8 SUID binary does not sanitize the LIBMOUNTFORCEMOUNT2 environment variable before use. A local unprivileged user can set this variable to force mount8 to use the legacy two-step mount2 code path, which applies security restrictions such as nosuid and...

util-linux security update

2.40.2-18.0.1.el102.20 - fix -d -t output regression OLDIS-51984 2.40.2-20 - libblkid: validate EBR data CVE-2026-53615 2.40.2-19 - libmount and blkid security fixes - libblkid: fix use-after-free in nested partition probing CVE-2026-13595 - nsenter: close cgroup.procs fd after join to prevent...

Oracle Linux 10 : util-linux (ELSA-2026-93461)

The remote Oracle Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-93461 advisory. - libblkid: validate EBR data CVE-2026-53615 - libblkid: fix use-after-free in nested partition probing CVE-2026-13595 - nsenter: close cgroup.procs ...

ALSA-2026:93461 Important: util-linux security update

The util-linux packages contain a large variety of low-level system utilities that are necessary for a Linux system to function. Among others, these include the fdisk configuration tool and the login program. Security Fixes: util-linux: TOCTOU in the mount program when setting up loop devices...

RHEL 10 : util-linux (RHSA-2026:93461)

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:93461 advisory. The util-linux packages contain a large variety of low-level system utilities that are necessary for a Linux system to function. Among...

CLEANSTART-2024-DH04358 race condition was found in util-linux before 2

Security vulnerability affects the shadow package. A race condition was found in util-linux before 2...

CVE-2026-53613-poc

CVE-2026-53613 PoC TOCTOU vulnerability in mount8 allowing local privilege escalation to root. Vulnerable Versions util-linux 2.41.0 through 2.41.4 util-linux 2.42.0 through 2.42.1 Exploits File| Method| Target ---|---|--- exploitshell.sh| SSH key extraction| /root exploitdirectshell.sh| Direct...

CVE-2024-28085

Wall-Escape CVE-2024-28085 The util-linux wall command does not filter escape sequences from command line arguments. The vulnerable code was introduced in commit cdd3cc7fa4 2013. Every version since has been vulnerable. A full report can be found here. I have nicknamed this bug "WallEscape". This...

Security Bulletin:Vulnerabilities exists in IBM Netezza Appliance

Summary Vulnerabilities identified in the IBM Netezza Appliance have been remediated in the latest release INA-1.0.2.7 Vulnerability Details CVEID:CVE-2025-14104 DESCRIPTION: A flaw was found in util-linux. This vulnerability allows a heap buffer overread when processing 256-byte usernames,...