From e916d9bb60bb21bd84fdeb34c2fff88c856266f5 Mon Sep 17 00:00:00 2001
From: Glenn Randers-Pehrson <glennrp at users.sourceforge.net>
Date: Wed, 4 Nov 2015 23:49:01 -0600
Subject: [PATCH] [libpng17] Fixed new bug with CRC error after reading an
 over-length palette.

---
 pngrutil.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pngrutil.c b/pngrutil.c
index c8db63902..869263753 100644
--- a/pngrutil.c
+++ b/pngrutil.c
@@ -910,7 +910,7 @@ png_handle_PLTE(png_structrp png_ptr, png_inforp info_ptr)
 #ifndef PNG_READ_OPT_PLTE_SUPPORTED
    if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
 #endif
-      png_crc_finish(png_ptr, 0);
+      png_crc_finish(png_ptr, (int) length - num * 3);
 
 #ifndef PNG_READ_OPT_PLTE_SUPPORTED
    else if (png_crc_error(png_ptr))  /* Only if we have a CRC error */