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.
3.11.0-12.193.12.0-1.33.12.0-2.53.12.0-2.73.12.0-3.83.12.0-3.93.12.0-4.103.12.0-4.123.12.0-5.133.12.0-7.15+80 more3.13.0-87.1334.2.0-16.194.2.0-17.214.2.0-19.234.3.0-1.104.3.0-2.114.3.0-5.164.3.0-6.174.3.0-7.184.4.0-10.254.4.0-11.26+16 more4.4.0-24.434.4.0-1002.24.4.0-1001.104.4.0-1003.34.8.0-36.36~16.04.13.16.0-25.33~14.04.23.16.0-26.35~14.04.13.16.0-28.37~14.04.13.16.0-28.38~14.04.13.16.0-29.39~14.04.13.16.0-30.40~14.04.13.16.0-31.41~14.04.13.16.0-31.43~14.04.13.16.0-33.44~14.04.13.16.0-34.45~14.04.1+32 more3.16.0-73.95~14.04.13.19.0-18.18~14.04.13.19.0-20.20~14.04.13.19.0-21.21~14.04.13.19.0-22.22~14.04.13.19.0-23.24~14.04.13.19.0-25.26~14.04.13.19.0-26.28~14.04.13.19.0-28.30~14.04.13.19.0-30.33~14.04.13.19.0-30.34~14.04.1+16 more3.19.0-61.69~14.04.14.2.0-18.22~14.04.14.2.0-19.23~14.04.14.2.0-21.25~14.04.14.2.0-22.27~14.04.14.2.0-23.28~14.04.14.2.0-25.30~14.04.14.2.0-27.32~14.04.14.2.0-30.35~14.04.14.2.0-30.36~14.04.14.2.0-34.39~14.04.1+3 more4.2.0-38.45~14.04.14.4.0-13.29~14.04.14.4.0-14.30~14.04.24.4.0-15.31~14.04.14.4.0-18.34~14.04.14.4.0-21.37~14.04.14.4.0-22.39~14.04.14.4.0-22.40~14.04.14.4.0-24.43~14.04.1Exploitability
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