fix a couple of races in MNT_TREE_BENEATH handling by do_move_mount()

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CVE-2025-37988

In the Linux kernel, the following vulnerability has been resolved: fix a couple of races in MNTTREEBENEATH handling by domovemount Normally dolockmountpath, is locking a mountpoint pinned by path and at the time when matching unlockmount unlocks that location it is still pinned by the same thing...

CVE-2025-37988 fix a couple of races in MNT_TREE_BENEATH handling by do_move_mount()

In the Linux kernel, the following vulnerability has been resolved: fix a couple of races in MNTTREEBENEATH handling by domovemount Normally dolockmountpath, is locking a mountpoint pinned by path and at the time when matching unlockmount unlocks that location it is still pinned by the same thing...

CVE-2025-37988

CVE-2025-37988 (Linux kernel) : The issue involves races in MNT_TREE_BENEATH handling during do_move_mount(), where the object locked is the mountpoint of path->mnt rather than path, and the mount/dentry pair could become unpinned if the mount is moved or the filesystem is shut down while the ...