File CVE-2025-53817.patch of Package p7zip.40594

Index: b/CPP/7zip/Archive/ComHandler.cpp
===================================================================
--- a/CPP/7zip/Archive/ComHandler.cpp
+++ b/CPP/7zip/Archive/ComHandler.cpp
@@ -521,6 +521,10 @@ HRESULT CDatabase::Open(IInStream *inStr
       {
         CItem item;
         item.Parse(sect + i, mode64bit);
+        // we use (item.Size) check here.
+        // so we don't need additional overflow checks for (item.Size +) in another code
+        if (item.Size >= ((UInt64)1 << 63))
+          return S_FALSE;
         Items.Add(item);
       }
       sid = Fat[sid];