Mercurial > vim
view src/kword_test.c @ 33862:242b964d6269 v9.0.2140
patch 9.0.2140: [security]: use-after-free in win-enter
Commit: https://github.com/vim/vim/commit/eec0c2b3a4cfab93dd8d4adaa60638d47a2bbc8a
Author: Christian Brabandt <cb@256bit.org>
Date: Tue Nov 28 22:03:48 2023 +0100
patch 9.0.2140: [security]: use-after-free in win-enter
Problem: [security]: use-after-free in win-enter
Solution: validate window pointer before calling win_enter()
win_goto() may stop visual mode, if it is active. However, this may in
turn trigger the ModeChanged autocommand, which could potentially free
the wp pointer which was valid before now became stale and points to now
freed memory.
So before calling win_enter(), let's verify one more time, that the
wp pointer still points to a valid window structure.
Reported by @henices, thanks!
Signed-off-by: Christian Brabandt <cb@256bit.org>
author | Christian Brabandt <cb@256bit.org> |
---|---|
date | Sun, 10 Dec 2023 15:16:01 +0100 |
parents | aadd1cae2ff5 |
children |
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/* vi:set ts=8 sts=4 sw=4 noet: * * VIM - Vi IMproved by Bram Moolenaar * * 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. */ /* * kword_test.c: Unittests for vim_iswordc() and vim_iswordp(). */ #undef NDEBUG #include <assert.h> // Must include main.c because it contains much more than just main() #define NO_VIM_MAIN #include "main.c" // This file has to be included because the tested functions are static #include "charset.c" /* * Test the results of vim_iswordc() and vim_iswordp() are matched. */ static void test_isword_funcs_utf8(void) { buf_T buf; int c; CLEAR_FIELD(buf); p_enc = (char_u *)"utf-8"; p_isi = (char_u *)""; p_isp = (char_u *)""; p_isf = (char_u *)""; buf.b_p_isk = (char_u *)"@,48-57,_,128-167,224-235"; curbuf = &buf; mb_init(); // calls init_chartab() for (c = 0; c < 0x10000; ++c) { char_u p[4] = {0}; int c1; int retc; int retp; utf_char2bytes(c, p); c1 = utf_ptr2char(p); if (c != c1) { fprintf(stderr, "Failed: "); fprintf(stderr, "[c = %#04x, p = {%#02x, %#02x, %#02x}] ", c, p[0], p[1], p[2]); fprintf(stderr, "c != utf_ptr2char(p) (=%#04x)\n", c1); abort(); } retc = vim_iswordc_buf(c, &buf); retp = vim_iswordp_buf(p, &buf); if (retc != retp) { fprintf(stderr, "Failed: "); fprintf(stderr, "[c = %#04x, p = {%#02x, %#02x, %#02x}] ", c, p[0], p[1], p[2]); fprintf(stderr, "vim_iswordc(c) (=%d) != vim_iswordp(p) (=%d)\n", retc, retp); abort(); } } } int main(void) { estack_init(); test_isword_funcs_utf8(); return 0; }