The XFS_IS_REALTIME_INODE macro in fs/xfs/xfs_linux.h in the Linux kernel before 4.13.2 does not verify that a filesystem has a realtime device, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) via vectors related to setting an RHINHERIT flag on a directory.
3.13.0-135.1844.4.0-98.121~14.04.14.4.0-98.1214.4.0-1039.484.13.0-1005.74.10.0-1008.84.4.0-1033.334.13.0-32.35~16.04.14.4.0-1009.144.4.0-1076.84Exploitability
AV:LAC:LPR:LUI:NScope
S:UImpact
C:NI:NA:HCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H