patch 9.0.2129: [security]: use-after-free in call_dfunc() Commit: https://github.com/vim/vim/commit/a555069b7d790abedc60edc505bd35bda257949d Author: mityu <mityu.mail@gmail.com> Date: Sat Nov 25 15:41:20 2023 +0100 patch 9.0.2129: [security]: use-after-free in call_dfunc() Problem: [security]: use-after-free in call_dfunc() Solution: Refresh dfunc pointer closes: #13571 This Commit fixes a SEGV caused by a use-after-free bug in call_dfunc(). When calling check_ufunc_arg_types() from the call_dfunc() it may cause def functions to be re-compiled and if there are too many def functions, the def_functions array will be re-allocated. Which means, that the dfunc pointer in call_dfunc() now starts pointing to freed memory. So we need to reset the dfunc pointer after calling check_ufunc_arg_types(). Let's also add a test, to ensure we do not regress. Signed-off-by: mityu <mityu.mail@gmail.com> Signed-off-by: Yegappan Lakshmanan <yegappan@yahoo.com> Signed-off-by: Christian Brabandt <cb@256bit.org>

/* XPM */
static char * tb_shell_xpm[] = {
/* width height ncolors cpp [x_hot y_hot] */
"18 18 6 1 0 0",
/* colors */
" 	s none	m none	c none",
".	s iconColor1	m black	c #000000",
"X	s iconGray6	m black	c #636363",
"o	s iconGray2	m none	c #bdbdbd",
"O	s iconColor2	m none	c #FFFFFF",
"+	s bottomShadowColor	m black	c #5D6069",
/* pixels */
"                  ",
"     ... ...      ",
"    .XoXXXoX.     ",
"   .oOoX.XoOo.    ",
"   .XoOoXoOoX.    ",
"  .Xoooo.ooooX.   ",
" .Xo.XOoXoOX.oX.  ",
" .oooXOo.oOXooo.  ",
" .oOo.XOXOX.oOo.+ ",
" .XoOo.o.o.oOoX.+ ",
"  .XooXoooXoOX.+  ",
"   .XoooOoooX.+   ",
"    .ooOOOoo.+    ",
"    ..XoooX..+    ",
"   .XoooooooX.+   ",
"   ...........+   ",
"     ++++++++++   ",
"                  "};