Sanity check HWResolution when writing Apple Raster.

michaelrsweet · michaelrsweet · commit e4897e93ed34 · 2026-04-05T09:46:51.000-04:00
diff --git a/cups/raster-stream.c b/cups/raster-stream.c
@@ -1038,6 +1038,9 @@ _cupsRasterWriteHeader(
 
   if (r->mode == CUPS_RASTER_WRITE_APPLE)
   {
+    if (r->header.HWResolution[0] == 0 || r->header.HWResolution[1] == 0)
+      return (0);
+
     r->rowheight = r->header.HWResolution[0] / r->header.HWResolution[1];
 
     if (r->header.HWResolution[0] != (r->rowheight * r->header.HWResolution[1]))

Original file line number	Diff line number	Diff line change
`@@ -1038,6 +1038,9 @@ _cupsRasterWriteHeader(`
`1038`	`1038`
`1039`	`1039`	`if (r->mode == CUPS_RASTER_WRITE_APPLE)`
`1040`	`1040`	`{`
	`1041`	`+ if (r->header.HWResolution[0] == 0 \|\| r->header.HWResolution[1] == 0)`
	`1042`	`+ return (0);`
	`1043`	`+`
`1041`	`1044`	`r->rowheight = r->header.HWResolution[0] / r->header.HWResolution[1];`
`1042`	`1045`
`1043`	`1046`	`if (r->header.HWResolution[0] != (r->rowheight * r->header.HWResolution[1]))`