CVE-2023-1175: patch 9.0.1378: illegal memory access when using virtual editing · vim/vim@c99cbf8

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patch 9.0.1378: illegal memory access when using virtual editing

Problem: Illegal memory access when using virtual editing. Solution: Make sure “startspaces” is not negative.

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Showing 3 changed files with 14 additions and 0 deletions.

• • register.c
  • • test_virtualedit.vim
  • version.c

@@ -1245,6 +1245,8 @@ op_yank(oparg_T *oap, int deleting, int mess)

// double-count it.

bd.startspaces = (ce - cs + 1)

- oap->start.coladd;

if (bd.startspaces < 0)

bd.startspaces = 0;

startcol++;

}

}

@@ -88,6 +88,16 @@ func Test_edit_change()

set virtualedit=

endfunc

func Test_edit_special_char()

new

se ve=all

norm a0

sil! exe “norm o00000\<Nul>k<a0s”

bwipe!

set virtualedit=

endfunc

" Tests for pasting at the beginning, end and middle of a tab character

" in virtual edit mode.

func Test_paste_in_tab()

@@ -695,6 +695,8 @@ static char *(features[]) =

static int included_patches[] =

{ /* Add new patch number below this line */

/**/

1378,

/**/

1377,

/**/

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