fs/pipe.c in the Linux kernel before 4.5 does not limit the amount of unread data in pipes, which allows local users to cause a denial of service (memory consumption) by creating many pipes with non-default sizes.
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=759c01142a5d0f364a462346168a56de28a80f52
lists.opensuse.org/opensuse-security-announce/2016-05/msg00060.html
lists.opensuse.org/opensuse-security-announce/2016-06/msg00052.html
lists.opensuse.org/opensuse-security-announce/2016-06/msg00054.html
lists.opensuse.org/opensuse-security-announce/2016-06/msg00056.html
lists.opensuse.org/opensuse-security-announce/2016-06/msg00059.html
lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html
lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html
rhn.redhat.com/errata/RHSA-2016-2574.html
rhn.redhat.com/errata/RHSA-2016-2584.html
rhn.redhat.com/errata/RHSA-2017-0217.html
www.debian.org/security/2016/dsa-3503
www.openwall.com/lists/oss-security/2016/03/01/3
www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html
www.securityfocus.com/bid/83870
www.ubuntu.com/usn/USN-2946-1
www.ubuntu.com/usn/USN-2946-2
www.ubuntu.com/usn/USN-2947-1
www.ubuntu.com/usn/USN-2947-2
www.ubuntu.com/usn/USN-2947-3
www.ubuntu.com/usn/USN-2948-1
www.ubuntu.com/usn/USN-2948-2
www.ubuntu.com/usn/USN-2949-1
www.ubuntu.com/usn/USN-2967-1
www.ubuntu.com/usn/USN-2967-2
bugzilla.redhat.com/show_bug.cgi?id=1313428
github.com/torvalds/linux/commit/759c01142a5d0f364a462346168a56de28a80f52