From 832bc5c169d8b339ef139ef0bdcefb2e72864e6e Mon Sep 17 00:00:00 2001
From: Sean Dewar <6256228+seandewar@users.noreply.github.com>
Date: Sun, 25 Feb 2024 01:30:37 +0000
Subject: vim-patch:9.1.0130: [security]: UAF if win_split_ins autocommands
 delete "wp"

Problem:  heap-use-after-free in win_splitmove if Enter/Leave
          autocommands from win_split_ins immediately closes "wp".
Solution: check that "wp" is valid after win_split_ins.
          (Sean Dewar)

https://github.com/vim/vim/commit/abf7030a5c22257f066fa9c4061ad150d5a82577
---
 test/old/testdir/test_window_cmd.vim | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'test')

diff --git a/test/old/testdir/test_window_cmd.vim b/test/old/testdir/test_window_cmd.vim
index 7ea556b11f..e6d591f8c9 100644
--- a/test/old/testdir/test_window_cmd.vim
+++ b/test/old/testdir/test_window_cmd.vim
@@ -1150,6 +1150,15 @@ func Test_win_splitmove()
   call assert_equal(v:true, s:triggered)
   unlet! s:triggered
 
+  split
+  let close_win = winnr('#')
+  augroup WinSplitMove
+    au!
+    au WinEnter * ++once quit!
+  augroup END
+  call win_splitmove(close_win, winnr())
+  call assert_equal(0, win_id2win(close_win))
+
   au! WinSplitMove
   augroup! WinSplitMove
   %bw!
-- 
cgit