From 5b08046eced887279dd64e0effbdbd21b0245e38 Mon Sep 17 00:00:00 2001
From: Michael R Sweet <msweet@msweet.org>
Date: Thu, 24 Apr 2025 13:17:31 -0400
Subject: [PATCH] Add more range checking for streams.

---
 pdfio-stream.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pdfio-stream.c b/pdfio-stream.c
index e4e6703..808e454 100644
--- a/pdfio-stream.c
+++ b/pdfio-stream.c
@@ -270,7 +270,7 @@ _pdfioStreamCreate(
     {
       columns = 1;
     }
-    else if (columns < 0)
+    else if (columns < 0 || columns > 65536)
     {
       _pdfioFileError(st->pdf, "Unsupported Columns value %d.", columns);
       free(st);
@@ -542,7 +542,7 @@ _pdfioStreamOpen(pdfio_obj_t *obj,	// I - Object
       {
         columns = 1;
       }
-      else if (columns < 0)
+      else if (columns < 0 || columns > 65536)
       {
         _pdfioFileError(st->pdf, "Unsupported Columns value %d.", columns);
 	goto error;