* ext/dl/lib/dl/func.rb (DL::Function#call): check tainted when

  $SAFE > 0.
* ext/fiddle/function.c (function_call): check tainted when $SAFE > 0.
* test/fiddle/test_func.rb (module Fiddle): add test for above.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40728 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 3 insertions, 0 deletions

diff --git a/ext/dl/lib/dl/func.rb b/ext/dl/lib/dl/func.rb
index a2e503835f..543711f651 100644
--- a/ext/dl/lib/dl/func.rb
+++ b/ext/dl/lib/dl/func.rb
@@ -92,6 +92,9 @@ module DL
         super
       else
         funcs = []
+        if $SAFE >= 1 && args.any? { |x| x.tainted? }
+          raise SecurityError, "tainted parameter not allowed"
+        end
         _args = wrap_args(args, @stack.types, funcs, &block)
         r = @cfunc.call(@stack.pack(_args))
         funcs.each{|f| f.unbind_at_call()}