From: Vsevolod Stakhov <vsevolod@highsecure.ru>
Date: Fri, 5 Jun 2020 19:16:15 +0000 (+0100)
Subject: [Minor] Pdf: Add some sanity check
X-Git-Tag: 2.6~351
X-Git-Url: https://source.dussan.org/?a=commitdiff_plain;h=1a5d3a27d7fffd575816d6efa6965c5702bf4171;p=rspamd.git

[Minor] Pdf: Add some sanity check
---

diff --git a/lualib/lua_content/pdf.lua b/lualib/lua_content/pdf.lua
index 5e1fa9061..ed88a24bd 100644
--- a/lualib/lua_content/pdf.lua
+++ b/lualib/lua_content/pdf.lua
@@ -426,7 +426,7 @@ local function maybe_extract_object_stream(obj, pdf, task)
     return nil
   end
   local dict = obj.dict
-  if dict.Length then
+  if dict.Length and type(obj.stream) == 'table' then
     local len = math.min(obj.stream.len,
         tonumber(maybe_dereference_object(dict.Length, pdf, task)) or 0)
     local real_stream = obj.stream.data:span(1, len)