The alarm_timer_nsleep function in kernel/time/alarmtimer.c in the Linux kernel through 4.17.3 has an integer overflow via a large relative timeout because ktime_add_safe is not used.
4.4.0-1034.374.4.0-139.165~14.04.14.4.0-139.1654.4.0-1072.824.15.0-1047.49~16.04.14.15.0-1055.604.15.0-1040.42~16.04.14.15.0-58.64~16.04.14.4.0-1037.434.15.0-1021.23~16.04.1Exploitability
AV:LAC:LPR:LUI:NScope
S:UImpact
C:NI:NA:LCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L