1 files changed, 7 insertions, 0 deletions
diff --git a/Misc/NEWS b/Misc/NEWS
index 5d5f01b..3f4eb43 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -10,6 +10,13 @@ Release date: tba
 Core and Builtins
 -----------------
 
+- Issue #26249: Memory functions of the :c:func:`PyMem_Malloc` domain
+  (:c:data:`PYMEM_DOMAIN_MEM`) now use the :ref:`pymalloc allocator <pymalloc>`
+  rather than system :c:func:`malloc`. Applications calling
+  :c:func:`PyMem_Malloc` without holding the GIL can now crash: use
+  ``PYTHONMALLOC=debug`` environment variable to validate the usage of memory
+  allocators in your application.
+
 - Issue #26802: Optimize function calls only using unpacking like
   ``func(*tuple)`` (no other positional argument, no keyword): avoid copying
   the tuple. Patch written by Joe Jevnik.