net/sctp/sm_sideeffect.c in the Linux kernel before 4.3 does not properly manage the relationship between a lock and a socket, which allows local users to cause a denial of service (deadlock) via a crafted sctp_accept call.
Exploitability
AV:LAC:LPR:NUI:NScope
S:UImpact
C:NI:NA:H6.2/CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H