diff --git a/libmatroska-memory.patch b/libmatroska-memory.patch
new file mode 100644
index 0000000..e058353
--- /dev/null
+++ b/libmatroska-memory.patch
@@ -0,0 +1,53 @@
+diff -ruwbBd libmatroska-1.5.0/src/KaxBlock.cpp libmatroska-1.5.1/src/KaxBlock.cpp
+--- libmatroska-1.5.0/src/KaxBlock.cpp	2019-03-12 20:54:34.000000000 +0100
++++ libmatroska-1.5.1/src/KaxBlock.cpp	2019-05-25 12:16:54.000000000 +0200
+@@ -628,11 +628,12 @@
+       // put all Frames in the list
+       if (mLacing != LACING_NONE) {
+         // read the number of frames in the lace
+-        uint32 LastBufferSize = GetSize() - BlockHeadSize - 1; // 1 for number of frame
++        const uint32 TotalLacedSize = GetSize() - BlockHeadSize - 1; // 1 for number of frame
++        uint32 LastBufferSize = TotalLacedSize;
+         uint8 FrameNum = _TempHead[0]; // number of frames in the lace - 1
+         // read the list of frame sizes
+         uint8 Index;
+-        int32 FrameSize;
++        uint32 FrameSize;
+         uint32 SizeRead;
+         uint64 SizeUnknown;
+ 
+@@ -646,6 +647,8 @@
+               do {
+                 Result += input.read(_TempHead, 1);
+                 FrameSize += uint8(_TempHead[0]);
++                if (FrameSize > TotalLacedSize)
++                  throw SafeReadIOCallback::EndOfStreamX(0);
+                 LastBufferSize--;
+ 
+                 FirstFrameLocation++;
+@@ -662,6 +665,8 @@
+             cursor = _tmpBuf = new binary[FrameNum*4]; /// \warning assume the mean size will be coded in less than 4 bytes
+             Result += input.read(cursor, FrameNum*4);
+             FrameSize = ReadCodedSizeValue(cursor, SizeRead, SizeUnknown);
++            if (FrameSize > TotalLacedSize)
++              throw SafeReadIOCallback::EndOfStreamX(0);
+             SizeList[0] = FrameSize;
+             cursor += SizeRead;
+             LastBufferSize -= FrameSize + SizeRead;
+@@ -670,6 +675,8 @@
+               // get the size of the frame
+               SizeRead = LastBufferSize;
+               FrameSize += ReadCodedSizeSignedValue(cursor, SizeRead, SizeUnknown);
++              if (FrameSize > TotalLacedSize)
++                throw SafeReadIOCallback::EndOfStreamX(0);
+               SizeList[Index] = FrameSize;
+               cursor += SizeRead;
+               LastBufferSize -= FrameSize + SizeRead;
+@@ -703,7 +710,6 @@
+   } catch (SafeReadIOCallback::EndOfStreamX &) {
+     SetValueIsSet(false);
+ 
+-    std::memset(EbmlBinary::GetBuffer(), 0, GetSize());
+     myBuffers.clear();
+     SizeList.clear();
+     Timecode           = 0;