os/unix/ngx_files.c in nginx before 1.10.1 and 1.11.x before 1.11.1 allows remote attackers to cause a denial of service (NULL pointer dereference and worker process crash) via a crafted request, involving writing a client request body to a temporary file.
https://security.gentoo.org/glsa/201606-06
https://access.redhat.com/errata/RHSA-2016:1425
http://www.ubuntu.com/usn/USN-2991-1
http://www.securitytracker.com/id/1036019
http://www.securityfocus.com/bid/90967
http://www.debian.org/security/2016/dsa-3592
http://mailman.nginx.org/pipermail/nginx-announce/2016/000179.html