Race condition in drivers/tty/n_hdlc.c in the Linux kernel through 4.10.1 allows local users to gain privileges or cause a denial of service (double free) by setting the HDLC line discipline.
https://bugzilla.redhat.com/show_bug.cgi?id=1428319
https://access.redhat.com/errata/RHSA-2017:1488
https://access.redhat.com/errata/RHSA-2017:1233
https://access.redhat.com/errata/RHSA-2017:1232
https://access.redhat.com/errata/RHSA-2017:1126
https://access.redhat.com/errata/RHSA-2017:1125
https://access.redhat.com/errata/RHSA-2017:0986
https://access.redhat.com/errata/RHSA-2017:0933
https://access.redhat.com/errata/RHSA-2017:0932
https://access.redhat.com/errata/RHSA-2017:0931
https://access.redhat.com/errata/RHSA-2017:0892
https://a13xp0p0v.github.io/2017/03/24/CVE-2017-2636.html
http://www.securitytracker.com/id/1037963
http://www.securityfocus.com/bid/96732