16 lines
808 B
Diff
16 lines
808 B
Diff
diff -rupN giflib-5.2.1/gif2rgb.c giflib-5.2.1-new/gif2rgb.c
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--- giflib-5.2.1/gif2rgb.c 2019-06-24 09:24:27.000000000 +0200
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+++ giflib-5.2.1-new/gif2rgb.c 2022-07-21 09:58:28.256036156 +0200
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@@ -294,6 +294,11 @@ static void DumpScreen2RGB(char *FileNam
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GifRow = ScreenBuffer[i];
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GifQprintf("\b\b\b\b%-4d", ScreenHeight - i);
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for (j = 0, BufferP = Buffer; j < ScreenWidth; j++) {
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+ /* Check if color is within color palete */
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+ if (GifRow[j] >= ColorMap->ColorCount)
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+ {
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+ GIF_EXIT(GifErrorString(D_GIF_ERR_IMAGE_DEFECT));
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+ }
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ColorMapEntry = &ColorMap->Colors[GifRow[j]];
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*BufferP++ = ColorMapEntry->Red;
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*BufferP++ = ColorMapEntry->Green;
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