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do_umount function in fs/namespace.c in the Linux kernel through 3.17 does not require the CAP_SYS_ADMIN capability for do_remount_sb calls that change the root filesystem to read-only, which allows local users to cause a denial of service (loss of writability) by making certain unshare system calls, clearing the / MNT_LOCKED flag, and making an MNT_FORCE umount system call.","Type":"Description","Title":"CVE-2014-7975"},{"CveYear":"2014","CveId":"7975","Ordinal":"2","NoteData":"2014-10-13","Type":"Other","Title":"Published"},{"CveYear":"2014","CveId":"7975","Ordinal":"3","NoteData":"2018-01-04","Type":"Other","Title":"Modified"}]}}}