Mercurial > vim
view src/create_nvcmdidxs.c @ 33829:f0132690cdf9 v9.0.2129
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>
author | Christian Brabandt <cb@256bit.org> |
---|---|
date | Sat, 25 Nov 2023 16:00:03 +0100 |
parents | ee1019e59bef |
children |
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/* vi:set ts=8 sts=4 sw=4 noet: * * VIM - Vi IMproved by Bram Moolenaar et al. * * Do ":help uganda" in Vim to read copying and usage conditions. * Do ":help credits" in Vim to see a list of people who contributed. * See README.txt for an overview of the Vim source code. */ /* * create_nvcmdidxs.c: helper program for `make nvcmdidxs` * * This outputs the list of command characters from the nv_cmds table in * decimal form, one per line. */ #include "vim.h" // Declare nv_cmds[]. #include "nv_cmds.h" #include <stdio.h> int main(void) { size_t i; for (i = 0; i < NV_CMDS_SIZE; i++) { int cmdchar = nv_cmds[i]; // Special keys are negative, use the negated value for sorting. if (cmdchar < 0) cmdchar = -cmdchar; printf("%d\n", cmdchar); } return 0; }