CVE-2025-38711

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> smb/server: avoid deadlock when linking with ReplaceIfExists<br /> <br /> If smb2_create_link() is called with ReplaceIfExists set and the name<br /> does exist then a deadlock will happen.<br /> <br /> ksmbd_vfs_kern_path_locked() will return with success and the parent<br /> directory will be locked. ksmbd_vfs_remove_file() will then remove the<br /> file. ksmbd_vfs_link() will then be called while the parent is still<br /> locked. It will try to lock the same parent and will deadlock.<br /> <br /> This patch moves the ksmbd_vfs_kern_path_unlock() call to *before*<br /> ksmbd_vfs_link() and then simplifies the code, removing the file_present<br /> flag variable.