diff -up vim80/src/ex_getln.c.cve0359 vim80/src/ex_getln.c

--- vim80/src/ex_getln.c.cve0359	2022-01-27 16:55:41.386213891 +0100

+++ vim80/src/ex_getln.c	2022-01-27 17:00:20.330960544 +0100

@@ -300,7 +300,7 @@ getcmdline(

     ccline.cmdindent = (firstc > 0 ? indent : 0);

     /* alloc initial ccline.cmdbuff */

-    alloc_cmdbuff(exmode_active ? 250 : indent + 1);

+    alloc_cmdbuff(indent + 50);

     if (ccline.cmdbuff == NULL)

 	return NULL;			    /* out of memory */

     ccline.cmdlen = ccline.cmdpos = 0;