diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,11 @@
+## 0.14.11
+
+* Fix issue in unBase64 with an empty bytestring that would cause a segfault
+
+## 0.14.10
+
+* Reintroduce foundation compatibility with old version
+
 ## 0.14.9
 
 * Reduce dependency to basement
diff --git a/Data/Memory/Encoding/Base64.hs b/Data/Memory/Encoding/Base64.hs
--- a/Data/Memory/Encoding/Base64.hs
+++ b/Data/Memory/Encoding/Base64.hs
@@ -104,6 +104,7 @@
 -- if the length is not a multiple of 4, Nothing is returned
 unBase64Length :: Ptr Word8 -> Int -> IO (Maybe Int)
 unBase64Length src len
+    | len < 1            = return Nothing
     | (len `mod` 4) /= 0 = return Nothing
     | otherwise          = do
         last1Byte <- peekByteOff src (len - 1)
diff --git a/memory.cabal b/memory.cabal
--- a/memory.cabal
+++ b/memory.cabal
@@ -1,5 +1,5 @@
 Name:                memory
-version:             0.14.10
+version:             0.14.11
 Synopsis:            memory and related abstraction stuff
 Description:
     Chunk of memory, polymorphic byte array management and manipulation