35 lines
1.2 KiB
Diff
35 lines
1.2 KiB
Diff
From c0cca041fc4fb6748d8dff3675fe7a839253d668 Mon Sep 17 00:00:00 2001
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From: Sandro Mani <manisandro@gmail.com>
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Date: Tue, 5 Dec 2023 16:24:32 -0700
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Subject: [PATCH] Fix CVE-2022-28506
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From: giflib-5.2.1-17.fc39.src.rpm
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Fixes https://nvd.nist.gov/vuln/detail/CVE-2022-28506
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Upstream: https://sourceforge.net/p/giflib/bugs/159/
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Signed-off-by: Sandro Mani <manisandro@gmail.com>
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Signed-off-by: Adam Duskett <adam.duskett@amarulasolutions.com>
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---
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gif2rgb.c | 5 +++++
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1 file changed, 5 insertions(+)
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diff --git a/gif2rgb.c b/gif2rgb.c
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index 8d7c0ff..d9a469f 100644
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--- a/gif2rgb.c
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+++ b/gif2rgb.c
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@@ -294,6 +294,11 @@ static void DumpScreen2RGB(char *FileName, int OneFileFlag,
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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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--
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2.43.0
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