In LibSass 3.5.5, a NULL Pointer Dereference in the function Sass::Eval::operator()(Sass::Supports_Operator*) in eval.cpp may cause a Denial of Service (application crash) via a crafted sass input file. Upstream issue: https://github.com/sass/libsass/issues/2786
Created libsass tracking bugs for this issue: Affects: epel-7 [bug 1671396] Affects: fedora-all [bug 1671395]