nginx is vulnerable to denial of service (DoS). The vulnerability exists through a null pointer dereference flaw when saving client request body to a temporary file.
mailman.nginx.org/pipermail/nginx-announce/2016/000179.html
www.debian.org/security/2016/dsa-3592
www.securityfocus.com/bid/90967
www.securitytracker.com/id/1036019
www.ubuntu.com/usn/USN-2991-1
access.redhat.com/errata/RHSA-2016:1425
access.redhat.com/security/updates/classification/#moderate
security.gentoo.org/glsa/201606-06