From: Dirk Lemstra <dirk@git.imagemagick.org>
Date: Mon, 15 May 2017 19:43:29 +0000 (+0200)
Subject: Added check for incorrect number of meta channels report in #492.
X-Git-Tag: 7.0.5-7~10
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=7fd419441bc7103398e313558171d342c6315f44;p=imagemagick

Added check for incorrect number of meta channels report in #492.
---

diff --git a/coders/mpc.c b/coders/mpc.c
index 8088da492..86359572d 100644
--- a/coders/mpc.c
+++ b/coders/mpc.c
@@ -568,6 +568,9 @@ static Image *ReadMPCImage(const ImageInfo *image_info,ExceptionInfo *exception)
                 if (LocaleCompare(keyword,"number-meta-channels") == 0)
                   {
                     image->number_meta_channels=StringToUnsignedLong(options);
+                    if (image->number_meta_channels > MaxPixelChannels)
+                      ThrowReaderException(CorruptImageError,
+                        "ImproperImageHeader");
                     break;
                   }
                 break;