From: Markus Koschany <apo@debian.org>
Date: Sun, 23 Oct 2022 16:01:20 +0200
Subject: CVE-2022-0213

Origin: https://github.com/vim/vim/commit/de05bb25733c3319e18dca44e9b59c6ee389eb26
---
 src/screen.c              |  3 ++-
 src/testdir/test_edit.vim | 14 ++++++++++++++
 2 files changed, 16 insertions(+), 1 deletion(-)

--- a/src/screen.c
+++ b/src/screen.c
@@ -6878,12 +6878,13 @@ win_redr_status(win_T *wp, int ignore_pu
 	p = NameBuff;
 	len = (int)STRLEN(p);
 
-	if (bt_help(wp->w_buffer)
+	if ((bt_help(wp->w_buffer)
 #ifdef FEAT_QUICKFIX
 		|| wp->w_p_pvw
 #endif
 		|| bufIsChanged(wp->w_buffer)
 		|| wp->w_buffer->b_p_ro)
+		&& len < MAXPATHL - 1)
 	    *(p + len++) = ' ';
 	if (bt_help(wp->w_buffer))
 	{
--- a/src/testdir/test_edit.vim
+++ b/src/testdir/test_edit.vim
@@ -1449,4 +1449,18 @@ func Test_edit_put_CTRL_E()
   set encoding=utf-8
 endfunc
 
+" CVE-2022-0213
+func Test_edit_overlong_file_name()
+
+  file 0000000000000000000000000000
+  file %%%%%%%%%%%%%%%%%%%%%%%%%%
+  file %%%%%%
+  set readonly
+  set ls=2
+
+  redraw!
+  set noreadonly ls&
+  bwipe!
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab