In the Linux kernel through 4.14.13, drivers/block/loop.c mishandles lo_release serialization, which allows attackers to cause a denial of service (__lock_acquire use-after-free) or possibly have unspecified other impact.
3.13.0-142.1914.4.0-1016.164.4.0-119.143~14.04.14.4.0-119.1434.4.0-1054.634.13.0-1014.174.13.0-1012.164.13.0-41.46~16.04.14.4.0-1020.254.13.0-1022.24Exploitability
AV:LAC:LPR:LUI:NScope
S:UImpact
C:HI:HA:HCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H