File tiff-CVE-2025-8534.patch of Package tiff.40314

Index: tiff-4.0.9/tools/tiff2ps.c
===================================================================
--- tiff-4.0.9.orig/tools/tiff2ps.c
+++ tiff-4.0.9/tools/tiff2ps.c
@@ -2172,10 +2172,20 @@ PS_Lvl2page(FILE* fd, TIFF* tif, uint32
 	tiled_image = TIFFIsTiled(tif);
 	if (tiled_image) {
 		num_chunks = TIFFNumberOfTiles(tif);
-		TIFFGetField(tif, TIFFTAG_TILEBYTECOUNTS, &bc);
+		if (!TIFFGetField(tif, TIFFTAG_TILEBYTECOUNTS, &bc))
+        {
+            TIFFError(filename,
+                      "Can't read bytecounts of tiles at PS_Lvl2page()");
+            return (FALSE);
+        }
 	} else {
 		num_chunks = TIFFNumberOfStrips(tif);
-		TIFFGetField(tif, TIFFTAG_STRIPBYTECOUNTS, &bc);
+		if (!TIFFGetField(tif, TIFFTAG_STRIPBYTECOUNTS, &bc))
+        {
+            TIFFError(filename,
+                      "Can't read bytecounts of strips at PS_Lvl2page()");
+            return (FALSE);
+        }
 	}
 
 	if (use_rawdata) {
@@ -2760,7 +2770,11 @@ PSRawDataBW(FILE* fd, TIFF* tif, uint32
 
 	(void) w; (void) h;
 	TIFFGetFieldDefaulted(tif, TIFFTAG_FILLORDER, &fillorder);
-	TIFFGetField(tif, TIFFTAG_STRIPBYTECOUNTS, &bc);
+	if (!TIFFGetField(tif, TIFFTAG_STRIPBYTECOUNTS, &bc))
+    {
+        TIFFError(filename, "Can't read bytecounts of strips at PSRawDataBW()");
+        return;
+    }
 
 	/*
 	 * Find largest strip: