CVE-2026-35356

A Time-of-Check to Time-of-Use (TOCTOU) vulnerability exists in the install utility of uutils coreutils when using the -D flag. The command creates parent directories and subsequently performs a second path resolution to create the target file, neither of which is anchored to a directory file descriptor. An attacker with concurrent write access can replace a path component with a symbolic link between these operations, redirecting the privileged write to an arbitrary file system location.

CVSS v3 6.3 MEDIUM

6.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.0 / Impact : 5.2

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/uutils/coreutils/pull/10140	Issue Tracking Patch
https://github.com/uutils/coreutils/releases/tag/0.7.0	Release Notes

Configurations

Configuration 1 (hide)

cpe:2.3:a:uutils:coreutils:*:*:*:*:*:rust:*:*

History

26 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) Una vulnerabilidad de tipo Time-of-Check to Time-of-Use (TOCTOU) existe en la utilidad install de uutils coreutils al usar la bandera -D. El comando crea directorios padre y posteriormente realiza una segunda resolución de ruta para crear el archivo objetivo, ninguna de las cuales está anclada a un descriptor de archivo de directorio. Un atacante con acceso de escritura concurrente puede reemplazar un componente de ruta con un enlace simbólico entre estas operaciones, redirigiendo la escritura privilegiada a una ubicación arbitraria del sistema de archivos.

Information

Published : 2026-04-22 17:16

Updated : 2026-10-26 21:10

NVD link : CVE-2026-35356

Mitre link : CVE-2026-35356

CVE.ORG link : CVE-2026-35356

JSON object : View

Products Affected

uutils

coreutils

CWE

CWE-367

Time-of-check Time-of-use (TOCTOU) Race Condition

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