From 1c9021be51ad9fbeabdd4f55d9453c394d8d52ae Mon Sep 17 00:00:00 2001
From: Marti Maria <marti.maria@littlecms.com>
Date: Mon, 15 Jul 2024 18:18:13 +0200
Subject: [PATCH] Add an extra check for channel count on undisclosed
 colorspaces

An extra check never hurts
---
 src/cmsxform.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/cmsxform.c b/src/cmsxform.c
index 99e9bb96..2f8b4e5e 100644
--- a/src/cmsxform.c
+++ b/src/cmsxform.c
@@ -1070,7 +1070,7 @@ cmsBool  IsProperColorSpace(cmsColorSpaceSignature Check, cmsUInt32Number dwForm
     int Space1 = (int) T_COLORSPACE(dwFormat);
     int Space2 = _cmsLCMScolorSpace(Check);
 
-    if (Space1 == PT_ANY) return TRUE;
+    if (Space1 == PT_ANY) return (T_CHANNELS(dwFormat) == cmsChannelsOf(Check));
     if (Space1 == Space2) return TRUE;
 
     if (Space1 == PT_LabV2 && Space2 == PT_Lab) return TRUE;