Mercurial > vim
comparison src/version.c @ 33915:a49ae967e9ed v9.0.2158
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>
author | Christian Brabandt <cb@256bit.org> |
---|---|
date | Mon, 11 Dec 2023 18:00:03 +0100 |
parents | 966a1af141b0 |
children | 28e1e956f42c |
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33914:966a1af141b0 | 33915:a49ae967e9ed |
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702 NULL | 702 NULL |
703 }; | 703 }; |
704 | 704 |
705 static int included_patches[] = | 705 static int included_patches[] = |
706 { /* Add new patch number below this line */ | 706 { /* Add new patch number below this line */ |
707 /**/ | |
708 2158, | |
707 /**/ | 709 /**/ |
708 2157, | 710 2157, |
709 /**/ | 711 /**/ |
710 2156, | 712 2156, |
711 /**/ | 713 /**/ |