diff --git a/CHANGELOG.md b/CHANGELOG.md
index 34a336446d6..86585f83c4c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## master (unreleased)
 
+### Bug fixes
+
+* [#8008](https://github.com/rubocop-hq/rubocop/issues/8008): Fix an error for `Lint/SuppressedException` when empty rescue block in `def`. ([@koic][])
+
 ## 0.84.0 (2020-05-21)
 
 ### New features
diff --git a/lib/rubocop/cop/lint/suppressed_exception.rb b/lib/rubocop/cop/lint/suppressed_exception.rb
index aaad8c27110..2d7e1f7f1a5 100644
--- a/lib/rubocop/cop/lint/suppressed_exception.rb
+++ b/lib/rubocop/cop/lint/suppressed_exception.rb
@@ -82,6 +82,8 @@ def comment_between_rescue_and_end?(node)
             end_line = ancestor.loc.end.line
             break
           end
+          return false unless end_line
+
           processed_source[node.first_line...end_line].any? { |line| comment_line?(line) }
         end
       end
diff --git a/spec/rubocop/cop/lint/suppressed_exception_spec.rb b/spec/rubocop/cop/lint/suppressed_exception_spec.rb
index 4a5bb488a59..4bb62f7f67d 100644
--- a/spec/rubocop/cop/lint/suppressed_exception_spec.rb
+++ b/spec/rubocop/cop/lint/suppressed_exception_spec.rb
@@ -41,6 +41,16 @@
       RUBY
     end
 
+    it 'registers an offense for empty rescue block in `def`' do
+      expect_offense(<<~RUBY)
+        def foo
+          do_something
+        rescue
+        ^^^^^^ Do not suppress exceptions.
+        end
+      RUBY
+    end
+
     it 'registers an offense for empty rescue on single line with a comment after it' do
       expect_offense(<<~RUBY)
         RSpec.describe Dummy do