fs/pnode.c in the Linux kernel before 4.5.4 does not properly traverse a mount propagation tree in a certain case involving a slave mount, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) via a crafted series of mount system calls.
3.13.0-87.1333.16.0-73.95~14.04.13.19.0-61.69~14.04.14.2.0-38.45~14.04.14.4.0-24.43~14.04.14.4.0-24.434.4.0-1012.164.4.0-1015.18Exploitability
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