The html_context_handle_element function in gst/subparse/samiparse.c in gst-plugins-base in GStreamer before 1.10.3 allows remote attackers to cause a denial of service (out-of-bounds write) via a crafted SMI file, as demonstrated by OneNote_Manager.smi.
https://security.gentoo.org/glsa/201705-10
https://gstreamer.freedesktop.org/releases/1.10/#1.10.3
https://bugzilla.gnome.org/show_bug.cgi?id=777502
https://access.redhat.com/errata/RHSA-2017:2060
http://www.securityfocus.com/bid/96001
http://www.openwall.com/lists/oss-security/2017/02/02/9