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annotate src/iscygpty.h @ 33862:242b964d6269 v9.0.2140

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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 6e3dc2d630c2
children
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1 /*
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2 * iscygpty.h -- part of ptycheck
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3 * https://github.com/k-takata/ptycheck
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4 *
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5 * Copyright (c) 2015-2017 K.Takata
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6 *
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7 * You can redistribute it and/or modify it under the terms of either
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8 * the MIT license (as described below) or the Vim license.
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9 *
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10 * Permission is hereby granted, free of charge, to any person obtaining
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11 * a copy of this software and associated documentation files (the
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12 * "Software"), to deal in the Software without restriction, including
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13 * without limitation the rights to use, copy, modify, merge, publish,
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14 * distribute, sublicense, and/or sell copies of the Software, and to
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15 * permit persons to whom the Software is furnished to do so, subject to
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16 * the following conditions:
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17 *
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18 * The above copyright notice and this permission notice shall be
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19 * included in all copies or substantial portions of the Software.
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20 *
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21 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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22 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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23 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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24 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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25 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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26 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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27 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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28 */
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30 #ifndef _ISCYGPTY_H
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31 #define _ISCYGPTY_H
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32
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33 #ifdef _WIN32
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34 int is_cygpty(int fd);
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35 int is_cygpty_used(void);
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36 #else
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37 #define is_cygpty(fd) 0
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38 #define is_cygpty_used() 0
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39 #endif
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40
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41 #endif // _ISCYGPTY_H