From: Markus Koschany <apo@debian.org>
Date: Mon, 24 Oct 2022 00:58:11 +0200
Subject: CVE-2022-0361

Origin: https://github.com/vim/vim/commit/dc5490e2cbc8c16022a23b449b48c1bd0083f366
---
 src/ex_cmds.c               |  2 ++
 src/testdir/test_visual.vim | 11 +++++++++++
 2 files changed, 13 insertions(+)

diff --git a/src/ex_cmds.c b/src/ex_cmds.c
index 0b732c2..b18f58c 100644
--- a/src/ex_cmds.c
+++ b/src/ex_cmds.c
@@ -1074,6 +1074,8 @@ ex_copy(linenr_T line1, linenr_T line2, linenr_T n)
     }
 
     appended_lines_mark(n, count);
+    if (VIsual_active)
+	check_pos(curbuf, &VIsual);
 
     msgmore((long)count);
 }
diff --git a/src/testdir/test_visual.vim b/src/testdir/test_visual.vim
index 0841952..e361f97 100644
--- a/src/testdir/test_visual.vim
+++ b/src/testdir/test_visual.vim
@@ -417,3 +417,14 @@ func Test_visual_block_append_invalid_char()
   bwipe!
 endfunc
 
+" CVE-2022-0361
+func Test_visual_ex_copy_line()
+  new
+  call setline(1, ["aaa", "bbbbbbbbbxbb"])
+  /x
+  exe "normal ggvjfxO"
+  t0
+  normal gNU
+  bwipe!
+endfunc
+