Race condition in the tty_ioctl function in drivers/tty/tty_io.c in the Linux kernel through 4.4.1 allows local users to obtain sensitive information from kernel memory or cause a denial of service (use-after-free and system crash) by making a TIOCGETD ioctl call during processing of a TIOCSETD ioctl call.
Exploitability
AV:LAC:LPR:NUI:NScope
S:UImpact
C:LI:NA:H6.8/CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H