diff --git a/newlib/libc/locale/newlocale.c b/newlib/libc/locale/newlocale.c
index 0789d5fd9..08f29dbcc 100644
--- a/newlib/libc/locale/newlocale.c
+++ b/newlib/libc/locale/newlocale.c
@@ -188,7 +188,8 @@ _newlocale_r (struct _reent *p, int category_mask, const char *locale,
 	if (tmp_locale.lc_cat[i].buf == (const void *) -1)
 	  {
 	    tmp_locale.lc_cat[i].buf = base->lc_cat[i].buf;
-	    base->lc_cat[i].ptr = base->lc_cat[i].buf = NULL;
+	    if (base != __get_C_locale ())
+	      base->lc_cat[i].ptr = base->lc_cat[i].buf = NULL;
 	  }
 #endif /* __HAVE_LOCALE_INFO__ */
       _freelocale_r (p, base);
diff --git a/winsup/cygwin/release/3.3.6 b/winsup/cygwin/release/3.3.6
index 364e0cb0d..1da4fa26c 100644
--- a/winsup/cygwin/release/3.3.6
+++ b/winsup/cygwin/release/3.3.6
@@ -39,3 +39,6 @@ Bug Fixes
 - Fix a path handling bug that could cause a non-existing file to be
   treated as the current directory.
   Addresses: https://cygwin.com/pipermail/cygwin/2022-August/252030.html
+
+- Fix a crash in newlocale.
+  Addresses: https://cygwin.com/pipermail/cygwin/2022-August/252043.html