1 files changed, 3 insertions, 0 deletions
diff --git a/Misc/NEWS b/Misc/NEWS
index 770f159..1151824 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -22,6 +22,9 @@ Core and Builtins
 - Issue #27473: Fixed possible integer overflow in bytes and bytearray
   concatenations.  Patch by Xiang Zhang.
 
+- Issue #27507: Add integer overflow check in bytearray.extend().  Patch by
+  Xiang Zhang.
+
 - Issue #27443: __length_hint__() of bytearray iterators no longer return a
   negative integer for a resized bytearray.