CVE-2026-53613

A Time-of-Check Time-of-Use (TOCTOU) vulnerability in util-linux allows a local low-privileged user to achieve local privilege escalation to root. The issue exists because the mount(8) utility validates a target path from an /etc/fstab entry (authorized via user or users options) before the mount...

EUVD-2026-101124

util-linux is a random collection of Linux utilities. In util-linux 2.17 through 2.41.6 and 2.42 through 2.42.3, and in 2.42.4 when the legacy mount2 path is used without /proc, restricted non-root mount requests validate an /etc/fstab target before the mount operation re-resolves that pathname. ...

CVE-2026-53613 util-linux mount target TOCTOU allows local privilege escalation

util-linux is a random collection of Linux utilities. In util-linux 2.17 through 2.41.6 and 2.42 through 2.42.3, and in 2.42.4 when the legacy mount2 path is used without /proc, restricted non-root mount requests validate an /etc/fstab target before the mount operation re-resolves that pathname. ...

CVE-2026-53613

util-linux is a random collection of Linux utilities. In util-linux 2.17 through 2.41.6 and 2.42 through 2.42.3, and in 2.42.4 when the legacy mount2 path is used without /proc, restricted non-root mount requests validate an /etc/fstab target before the mount operation re-resolves that pathname. ...

EUVD-2026-101123

util-linux is a random collection of Linux utilities. In util-linux 2.39 through 2.41.4 and 2.42 through 2.42.1, the SUID mount utility's hookowner.c post-mount hook performs path-based chmod and lchown operations on a previously validated mount target. A local low-privileged user authorized by a...

CVE-2026-53612

util-linux is a random collection of Linux utilities. In util-linux 2.39 through 2.41.4 and 2.42 through 2.42.1, the SUID mount utility's hookowner.c post-mount hook performs path-based chmod and lchown operations on a previously validated mount target. A local low-privileged user authorized by a...

CVE-2026-53612

The util-linux SUID mount utility is vulnerable to a Time-of-Check Time-of-Use (TOCTOU) race condition in the hook_owner.c post-mount hook. In versions 2.39 through 2.41.4 and 2.42 through 2.42.1 , the utility performs path-based chmod() and lchown() operations on a previously validated mount tar...

CVE-2026-53612 util-linux mount hook_owner TOCTOU allows local privilege escalation

util-linux is a random collection of Linux utilities. In util-linux 2.39 through 2.41.4 and 2.42 through 2.42.1, the SUID mount utility's hookowner.c post-mount hook performs path-based chmod and lchown operations on a previously validated mount target. A local low-privileged user authorized by a...

CVE-2026-53612

util-linux is a random collection of Linux utilities. In util-linux 2.39 through 2.41.4 and 2.42 through 2.42.1, the SUID "mount" utility's "hookowner.c" post-mount hook performs path-based "chmod" and "lchown" operations on a previously validated mount target. A local low-privileged user...

CVE-2026-53612 util-linux mount hook_owner TOCTOU allows local privilege escalation

util-linux is a random collection of Linux utilities. In util-linux 2.39 through 2.41.4 and 2.42 through 2.42.1, the SUID mount utility's hookowner.c post-mount hook performs path-based chmod and lchown operations on a previously validated mount target. A local low-privileged user authorized by a...

CVE-2026-53612 util-linux mount hook_owner TOCTOU allows local privilege escalation

util-linux is a random collection of Linux utilities. In util-linux 2.39 through 2.41.4 and 2.42 through 2.42.1, the SUID mount utility's hookowner.c post-mount hook performs path-based chmod and lchown operations on a previously validated mount target. A local low-privileged user authorized by a...

CVE-2026-53612

util-linux is a random collection of Linux utilities. In util-linux 2.39 through 2.41.4 and 2.42 through 2.42.1, the SUID mount utility's hookowner.c post-mount hook performs path-based chmod and lchown operations on a previously validated mount target. A local low-privileged user authorized by a...

CVE-2026-53613: Time-of-check Time-of-use (TOCTOU) Race Condition

util-linux is a random collection of Linux utilities. In util-linux 2.17 through 2.41.6 and 2.42 through 2.42.3, and in 2.42.4 when the legacy mount2 path is used without /proc, restricted non-root mount requests validate an /etc/fstab target before the mount operation re-resolves that pathname. ...

Debian: CVE-2026-53612: util-linux -- security update

util-linux is a random collection of Linux utilities. In util-linux 2.39 through 2.41.4 and 2.42 through 2.42.1, the SUID mount utility's hookowner.c post-mount hook performs path-based chmod and lchown operations on a previously validated mount target. A local low-privileged user authorized by a...

Debian: CVE-2026-53613: util-linux -- security update

util-linux is a random collection of Linux utilities. In util-linux 2.17 through 2.41.6 and 2.42 through 2.42.3, and in 2.42.4 when the legacy mount2 path is used without /proc, restricted non-root mount requests validate an /etc/fstab target before the mount operation re-resolves that pathname. ...

CVE-2026-53612: Time-of-check Time-of-use (TOCTOU) Race Condition

util-linux is a random collection of Linux utilities. In util-linux 2.39 through 2.41.4 and 2.42 through 2.42.1, the SUID mount utility's hookowner.c post-mount hook performs path-based chmod and lchown operations on a previously validated mount target. A local low-privileged user authorized by a...

CVE-2026-53614: Improper Privilege Management

util-linux is a random collection of Linux utilities. In util-linux 2.39.1 through 2.41.4 and 2.42 through 2.42.1, the SUID mount utility reads the attacker-controlled LIBMOUNTFORCEMOUNT2 environment variable with getenv, allowing a local low-privileged user to force the non-atomic legacy...

DEBIAN-CVE-2026-88838

A flaw was found in BusyBox's mount utility. A non-root user can bypass mount security restrictions set in /etc/fstab by specifying clearing-mask options on the command line. These options pass the non-root flag filter and are merged with fstab options as strings; when the combined options are...

CVE-2026-88838

A flaw was found in BusyBox's mount utility. A non-root user can bypass mount security restrictions set in /etc/fstab by specifying clearing-mask options on the command line. These options pass the non-root flag filter and are merged with fstab options as strings; when the combined options are...

CVE-2026-88838

A flaw was found in BusyBox's mount utility. A non-root user can bypass mount security restrictions set in /etc/fstab by specifying clearing-mask options on the command line. These options pass the non-root flag filter and are merged with fstab options as strings; when the combined options are...