Mercurial > vim
view src/gui_dwrite.h @ 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 | 808625d4b71b |
children |
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/* vi:set ts=8 sts=4 sw=4 noet: */ /* * Author: MURAOKA Taro <koron.kaoriya@gmail.com> * * Contributors: * - Ken Takata * - Yasuhiro Matsumoto * * Copyright (C) 2013 MURAOKA Taro <koron.kaoriya@gmail.com> * THIS FILE IS DISTRIBUTED UNDER THE VIM LICENSE. */ #ifndef GUI_DWRITE_H #define GUI_DWRITE_H #ifdef __cplusplus extern "C" { #endif typedef struct DWriteContext DWriteContext; typedef struct DWriteRenderingParams { float gamma; float enhancedContrast; float clearTypeLevel; /* * pixelGeometry: * 0 - DWRITE_PIXEL_GEOMETRY_FLAT * 1 - DWRITE_PIXEL_GEOMETRY_RGB * 2 - DWRITE_PIXEL_GEOMETRY_BGR */ int pixelGeometry; /* * renderingMode: * 0 - DWRITE_RENDERING_MODE_DEFAULT * 1 - DWRITE_RENDERING_MODE_ALIASED * 2 - DWRITE_RENDERING_MODE_CLEARTYPE_GDI_CLASSIC * 3 - DWRITE_RENDERING_MODE_CLEARTYPE_GDI_NATURAL * 4 - DWRITE_RENDERING_MODE_CLEARTYPE_NATURAL * 5 - DWRITE_RENDERING_MODE_CLEARTYPE_NATURAL_SYMMETRIC * 6 - DWRITE_RENDERING_MODE_OUTLINE */ int renderingMode; /* * antialiasMode: * 0 - D2D1_TEXT_ANTIALIAS_MODE_DEFAULT * 1 - D2D1_TEXT_ANTIALIAS_MODE_CLEARTYPE * 2 - D2D1_TEXT_ANTIALIAS_MODE_GRAYSCALE * 3 - D2D1_TEXT_ANTIALIAS_MODE_ALIASED */ int textAntialiasMode; } DWriteRenderingParams; void DWrite_Init(void); void DWrite_Final(void); DWriteContext *DWriteContext_Open(void); void DWriteContext_BindDC(DWriteContext *ctx, HDC hdc, const RECT *rect); void DWriteContext_SetFont(DWriteContext *ctx, HFONT hFont); void DWriteContext_DrawText( DWriteContext *ctx, const WCHAR *text, int len, int x, int y, int w, int h, int cellWidth, COLORREF color, UINT fuOptions, const RECT *lprc, const INT *lpDx); void DWriteContext_FillRect(DWriteContext *ctx, const RECT *rc, COLORREF color); void DWriteContext_DrawLine(DWriteContext *ctx, int x1, int y1, int x2, int y2, COLORREF color); void DWriteContext_SetPixel(DWriteContext *ctx, int x, int y, COLORREF color); void DWriteContext_Scroll(DWriteContext *ctx, int x, int y, const RECT *rc); void DWriteContext_Flush(DWriteContext *ctx); void DWriteContext_Close(DWriteContext *ctx); void DWriteContext_SetRenderingParams( DWriteContext *ctx, const DWriteRenderingParams *params); DWriteRenderingParams *DWriteContext_GetRenderingParams( DWriteContext *ctx, DWriteRenderingParams *params); #ifdef __cplusplus } #endif #endif/*GUI_DWRITE_H*/