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-rw-r--r--lib/resolv.rb3
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/resolv.rb b/lib/resolv.rb
index 579f8885ae..6b2fa9d903 100644
--- a/lib/resolv.rb
+++ b/lib/resolv.rb
@@ -1528,6 +1528,7 @@ class Resolv
end
def get_bytes(len = @limit - @index)
+ raise DecodeError.new("limit exceeded") if @limit < @index + len
d = @data[@index, len]
@index += len
return d
@@ -1555,6 +1556,7 @@ class Resolv
end
def get_string
+ raise DecodeError.new("limit exceeded") if @limit <= @index
len = @data[@index].ord
raise DecodeError.new("limit exceeded") if @limit < @index + 1 + len
d = @data[@index + 1, len]
@@ -1578,6 +1580,7 @@ class Resolv
limit = @index if !limit || @index < limit
d = []
while true
+ raise DecodeError.new("limit exceeded") if @limit <= @index
case @data[@index].ord
when 0
@index += 1