Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

CVE-2026-64393

Gravedad:
Pendiente de análisis
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
25/07/2026
Última modificación:
25/07/2026

Descripción

*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> ksmbd: run set info with opener credentials<br /> <br /> SMB2 SET_INFO handlers call path-based VFS helpers after checking the<br /> access mask granted to the SMB handle. Those helpers perform their owner,<br /> inode permission and LSM checks using the current ksmbd worker credentials.<br /> <br /> Run the complete SET_INFO dispatch with the credentials captured when the<br /> handle was opened. This also removes the separate security information<br /> credential setup and keeps all SET_INFO classes under one credential scope.<br /> <br /> Direct override_creds() is used because it can nest with the request<br /> credential overrides already used by rename and link helpers.

Impacto