commit 7bbe8ea1a595bb7509ffa0a86b076e9b720e85af
Author: Eric S. Raymond <esr@thyrsus.com>
Date:   Wed Feb 18 18:06:50 2026 -0500

    Resolve SourceForge bug #187: CVE-2025-31344

CVE: CVE-2025-31344
Upstream: https://sourceforge.net/p/giflib/code/ci/7bbe8ea1a595bb7509ffa0a86b076e9b720e85af
Signed-off-by: Thomas Perale <thomas.perale@mind.be>

diff --git a/gif2rgb.c b/gif2rgb.c
index b80ebcd..da4fa23 100644
--- a/gif2rgb.c
+++ b/gif2rgb.c
@@ -327,6 +327,11 @@ static void DumpScreen2RGB(char *FileName, int OneFileFlag,
 			GifRow = ScreenBuffer[i];
 			GifQprintf("\b\b\b\b%-4d", ScreenHeight - i);
 			for (j = 0; j < ScreenWidth; j++) {
+				/* Check if color is within color palete */
+				if (GifRow[j] >= ColorMap->ColorCount) {
+					GIF_EXIT(GifErrorString(
+					    D_GIF_ERR_IMAGE_DEFECT));
+				}
 				ColorMapEntry = &ColorMap->Colors[GifRow[j]];
 				Buffers[0][j] = ColorMapEntry->Red;
 				Buffers[1][j] = ColorMapEntry->Green;