From: Dirk Lemstra <dirk@git.imagemagick.org>
Date: Sat, 31 Mar 2018 06:24:32 +0000 (+0200)
Subject: Only support up to 3 channels.
X-Git-Tag: 7.0.7-29~263
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=b8cf182ad70762aec5354b1f5b5f17cc8e9d3180;p=imagemagick

Only support up to 3 channels.
---

diff --git a/coders/rla.c b/coders/rla.c
index a34007239..f3fab923b 100644
--- a/coders/rla.c
+++ b/coders/rla.c
@@ -221,6 +221,8 @@ static Image *ReadRLAImage(const ImageInfo *image_info,ExceptionInfo *exception)
   rla_info.number_matte_channels=(short) ReadBlobMSBShort(image);
   if (rla_info.number_matte_channels < 0)
     ThrowReaderException(CorruptImageError,"ImproperImageHeader");
+  if ((rla_info.number_channels > 3) || (rla_info.number_matte_channels > 3))
+    ThrowReaderException(CoderError,"Unsupported number of channels");
   if (rla_info.number_channels == 0)
     rla_info.number_channels=3;
   rla_info.number_channels+=rla_info.number_matte_channels;