CVE-2026-64395

*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> ksmbd: require source read access for duplicate extents<br /> <br /> FSCTL_DUPLICATE_EXTENTS_TO_FILE passes the source file directly to<br /> vfs_clone_file_range() or vfs_copy_file_range() without checking the SMB<br /> access mask granted to the source handle. A handle opened with attribute<br /> access can consequently be used to copy file contents into an<br /> attacker-readable destination.<br /> <br /> Require FILE_READ_DATA on the source handle before either VFS operation,<br /> matching other ksmbd data-copy paths.