51 lines
1.9 KiB
Diff
51 lines
1.9 KiB
Diff
From ef99da020599a666b7d171eec6ab527b47dd33f3 Mon Sep 17 00:00:00 2001
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From: Ondrej Holy <oholy@redhat.com>
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Date: Thu, 22 Jan 2026 12:47:42 +0100
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Subject: [PATCH] [gdi,gfx] properly clamp SurfaceToSurface
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Backport of commit c4a7c371342edf0d307cea728f56d3302f0ab38c.
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Co-Authored-By: Claude <noreply@anthropic.com>
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---
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libfreerdp/gdi/gfx.c | 9 +++++----
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1 file changed, 5 insertions(+), 4 deletions(-)
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diff --git a/libfreerdp/gdi/gfx.c b/libfreerdp/gdi/gfx.c
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index 3970715e0..968a5a17c 100644
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--- a/libfreerdp/gdi/gfx.c
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+++ b/libfreerdp/gdi/gfx.c
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@@ -1175,7 +1175,6 @@ static UINT gdi_SurfaceToSurface(RdpgfxClientContext* context,
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UINT status = ERROR_INTERNAL_ERROR;
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UINT16 index;
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BOOL sameSurface;
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- UINT32 nWidth, nHeight;
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const RECTANGLE_16* rectSrc;
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RECTANGLE_16 invalidRect;
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gdiGfxSurface* surfaceSrc;
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@@ -1199,8 +1198,8 @@ static UINT gdi_SurfaceToSurface(RdpgfxClientContext* context,
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if (!is_rect_valid(rectSrc, surfaceSrc->width, surfaceSrc->height))
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goto fail;
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- nWidth = rectSrc->right - rectSrc->left;
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- nHeight = rectSrc->bottom - rectSrc->top;
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+ const UINT32 nWidth = rectSrc->right - rectSrc->left;
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+ const UINT32 nHeight = rectSrc->bottom - rectSrc->top;
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for (index = 0; index < surfaceToSurface->destPtsCount; index++)
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{
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@@ -1209,8 +1208,10 @@ static UINT gdi_SurfaceToSurface(RdpgfxClientContext* context,
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if (!is_rect_valid(&rect, surfaceDst->width, surfaceDst->height))
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goto fail;
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+ const UINT32 rwidth = rect.right - rect.left;
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+ const UINT32 rheight = rect.bottom - rect.top;
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if (!freerdp_image_copy(surfaceDst->data, surfaceDst->format, surfaceDst->scanline,
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- destPt->x, destPt->y, nWidth, nHeight, surfaceSrc->data,
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+ destPt->x, destPt->y, rwidth, rheight, surfaceSrc->data,
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surfaceSrc->format, surfaceSrc->scanline, rectSrc->left,
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rectSrc->top, NULL, FREERDP_FLIP_NONE))
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goto fail;
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--
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2.52.0
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