patch 9.0.2158: [security]: use-after-free in check_argument_type Commit: https://github.com/vim/vim/commit/0f28791b215bd4c22ed580839409c2f7d39d8140 Author: Christian Brabandt <cb@256bit.org> Date: Mon Dec 11 17:53:25 2023 +0100 patch 9.0.2158: [security]: use-after-free in check_argument_type Problem: [security]: use-after-free in check_argument_type Solution: Reset function type pointer when freeing the function type list function pointer fp->uf_func_type may point to the same memory, that was allocated for fp->uf_type_list. However, when cleaning up a function definition (e.g. because it was invalid), fp->uf_type_list will be freed, but fp->uf_func_type may still point to the same (now) invalid memory address. So when freeing the fp->uf_type_list, check if fp->func_type points to any of those types and if it does, reset the fp->uf_func_type pointer to the t_func_any (default) type pointer closes: #13652 Signed-off-by: Christian Brabandt <cb@256bit.org>

/* XPM */
static char * vim16x16[] = {
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".	c #000000",
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"%	c #C0C0C0",
"&	c #FFFFFF",
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" .&&&&&.@.&&&&. ",
" .%%%%%$..%%%%$.",
"  .%%%$.@.&%%$. ",
"  .%%%$..&%%$.  ",
"  .%%%$.&%%$..  ",
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"#@.%%%&%%$.@@@@.",
".@.%%%%%..@@@@+ ",
" ..%%%%.%...@.  ",
"  .%%%%...%%.%. ",
"  .%%%.%%.%%%%%.",
"  .%%$..%.%.%.%.",
"  .%$.@.%.%.%.%.",
"   .. .%%.%.%.%.",
"       .. . . . "};