diff --git a/winsup/cygwin/release/2.10.1 b/winsup/cygwin/release/2.10.1
index af7c83d4a..cdd63af10 100644
--- a/winsup/cygwin/release/2.10.1
+++ b/winsup/cygwin/release/2.10.1
@@ -22,3 +22,6 @@ Bug Fixes
 
 - Fix a CPU affinity problem when creating /proc/cpuinfo output.
   Addresses: https://cygwin.com/ml/cygwin/2018-04/msg00118.html
+
+- Fix a buffer underrun problem in Win32 path normalization.
+  Addresses: https://cygwin.com/ml/cygwin/2018-05//msg00017.html